From 609a999c2d743252906c257dbc83bc3e9e30c946 Mon Sep 17 00:00:00 2001 From: Steve Piercy Date: Mon, 5 Oct 2015 03:03:26 -0700 Subject: - grammar - heading underlines - update images and text for debug toolbar --- docs/narr/project.rst | 87 ++++++++++++++++++++++++++------------------------- 1 file changed, 44 insertions(+), 43 deletions(-) (limited to 'docs/narr/project.rst') diff --git a/docs/narr/project.rst b/docs/narr/project.rst index 0ada1a379..76c56157a 100644 --- a/docs/narr/project.rst +++ b/docs/narr/project.rst @@ -1,7 +1,7 @@ .. _project_narr: Creating a :app:`Pyramid` Project -==================================== +================================= As we saw in :ref:`firstapp_chapter`, it's possible to create a :app:`Pyramid` application completely manually. However, it's usually more @@ -12,8 +12,8 @@ A project is a directory that contains at least one Python :term:`package`. You'll use a scaffold to create a project, and you'll create your application logic within a package that lives inside the project. Even if your application is extremely simple, it is useful to place code that drives the -application within a package, because: 1) a package is more easily extended -with new code and 2) an application that lives inside a package can also be +application within a package, because (1) a package is more easily extended +with new code, and (2) an application that lives inside a package can also be distributed more easily than one which does not live within a package. :app:`Pyramid` comes with a variety of scaffolds that you can use to generate @@ -32,24 +32,24 @@ as part of Pyramid. .. _additional_paster_scaffolds: Scaffolds Included with :app:`Pyramid` ------------------------------------------------- +-------------------------------------- The convenience scaffolds included with :app:`Pyramid` differ from each other on a number of axes: - the persistence mechanism they offer (no persistence mechanism, - :term:`ZODB`, or :term:`SQLAlchemy`). + :term:`ZODB`, or :term:`SQLAlchemy`) - the mechanism they use to map URLs to code (:term:`traversal` or :term:`URL - dispatch`). + dispatch`) The included scaffolds are these: ``starter`` - URL mapping via :term:`URL dispatch` and no persistence mechanism. + URL mapping via :term:`URL dispatch` and no persistence mechanism ``zodb`` - URL mapping via :term:`traversal` and persistence via :term:`ZODB`. + URL mapping via :term:`traversal` and persistence via :term:`ZODB` ``alchemy`` URL mapping via :term:`URL dispatch` and persistence via @@ -70,7 +70,7 @@ the ``pcreate`` command installed within the virtualenv. We'll choose the ``starter`` scaffold for this purpose. When we invoke ``pcreate``, it will create a directory that represents our project. -In :ref:`installing_chapter` we called the virtualenv directory ``env``; the +In :ref:`installing_chapter` we called the virtualenv directory ``env``. The following commands assume that our current working directory is the ``env`` directory. @@ -89,7 +89,6 @@ Or on Windows: > %VENV%\Scripts\pcreate -s starter MyProject - Here's sample output from a run of ``pcreate`` on UNIX for a project we name ``MyProject``: @@ -129,8 +128,8 @@ server" directory, and you don't need to put it within a virtualenv directory. The author uses Linux mainly, and tends to put project directories which he creates within his ``~/projects`` directory. On Windows, it's a good idea to put project directories within a directory that -contains no space characters, so it's wise to *avoid* a path that contains -i.e. ``My Documents``. As a result, the author, when he uses Windows, just +contains no space characters, so it's wise to *avoid* a path that contains, +i.e., ``My Documents``. As a result, the author, when he uses Windows, just puts his projects in ``C:\projects``. .. warning:: @@ -185,13 +184,13 @@ Elided output from a run of this command on UNIX is shown below: This will install a :term:`distribution` representing your project into the virtual environment interpreter's library set so it can be found by ``import`` statements and by other console scripts such as -``pserve``, ``pshell``, ``proutes`` and ``pviews``. +``pserve``, ``pshell``, ``proutes``, and ``pviews``. .. index:: single: running tests single: tests (running) -Running The Tests For Your Application +Running the Tests for Your Application -------------------------------------- To run unit tests for your application, you should invoke them using the @@ -250,7 +249,7 @@ single sample test exists. .. _running_the_project_application: -Running The Project Application +Running the Project Application ------------------------------- Once a project is installed for development, you can run the application it @@ -285,10 +284,10 @@ respond to requests made to ``127.0.0.1`` and on any external IP address. For example, your system might be configured to have an external IP address ``192.168.1.50``. If that's the case, if you use a browser running on the same system as Pyramid, it will be able to access the application via -``http://127.0.0.1:6543/`` as well as via -``http://192.168.1.50:6543/``. However, *other people* on other computers on -the same network will also be able to visit your Pyramid application in their -browser by visiting ``http://192.168.1.50:6543/``. +``http://127.0.0.1:6543/`` as well as via ``http://192.168.1.50:6543/``. +However, *other people* on other computers on the same network will also be +able to visit your Pyramid application in their browser by visiting +``http://192.168.1.50:6543/``. If you want to restrict access such that only a browser running on the same machine as Pyramid will be able to access your Pyramid application, edit the @@ -309,19 +308,20 @@ portion of the ``development.ini`` file. For example, you can change the section to ``port = 8080`` to run the server on port 8080 instead of port 6543. -You can shut down a server started this way by pressing ``Ctrl-C``. +You can shut down a server started this way by pressing ``Ctrl-C`` (or +``Ctrl-Break`` on Windows). The default server used to run your Pyramid application when a project is created from a scaffold is named :term:`Waitress`. This server is what prints the ``serving on...`` line when you run ``pserve``. It's a good idea -to use this server during development, because it's very simple. It can also +to use this server during development because it's very simple. It can also be used for light production. Setting your application up under a different server is not advised until you've done some development work under the default server, particularly if you're not yet experienced with Python web development. Python web server setup can be complex, and you should get some confidence that your application works in a default environment before trying to optimize it or make it "more like production". It's awfully easy to get -sidetracked trying to set up a nondefault server for hours without actually +sidetracked trying to set up a non-default server for hours without actually starting to do any development. One of the nice things about Python web servers is that they're largely interchangeable, so if your application works under the default server, it will almost certainly work under any other @@ -392,25 +392,26 @@ generated ``starter`` application in a browser. The Debug Toolbar ~~~~~~~~~~~~~~~~~ -If you click on the image shown at the right hand top of the page ("^DT"), -you'll be presented with a debug toolbar that provides various niceties while -you're developing. This image will float above every HTML page served by -:app:`Pyramid` while you develop an application, and allows you show the -toolbar as necessary. Click on ``Hide`` to hide the toolbar and show the -image again. +.. image:: project-show-toolbar.png + +If you click on the :app:`Pyramid` logo at the top right of the page, a new +target window will open to present a debug toolbar that provides various +niceties while you're developing. This logo will float above every HTML +page served by :app:`Pyramid` while you develop an application, and allows +you to show the toolbar as necessary. .. image:: project-debug.png -If you don't see the debug toolbar image on the right hand top of the page, -it means you're browsing from a system that does not have debugging access. -By default, for security reasons, only a browser originating from -``localhost`` (``127.0.0.1``) can see the debug toolbar. To allow your -browser on a remote system to access the server, add a line within the -``[app:main]`` section of the ``development.ini`` file in the form -``debugtoolbar.hosts = X.X.X.X``. For example, if your Pyramid application -is running on a remote system, and you're browsing from a host with the IP -address ``192.168.1.1``, you'd add something like this to enable the toolbar -when your system contacts Pyramid: +If you don't see the Pyramid logo on the top right of the page, it means +you're browsing from a system that does not have debugging access. By +default, for security reasons, only a browser originating from ``localhost`` +(``127.0.0.1``) can see the debug toolbar. To allow your browser on a +remote system to access the server, add a line within the ``[app:main]`` +section of the ``development.ini`` file in the form ``debugtoolbar.hosts = X +.X.X.X``. For example, if your Pyramid application is running on a remote +system, and you're browsing from a host with the IP address ``192.168.1.1``, +you'd add something like this to enable the toolbar when your system +contacts Pyramid: .. code-block:: ini @@ -450,9 +451,9 @@ Put a hash mark at the beginning of the ``pyramid_debugtoolbar`` line: Then restart the application to see that the toolbar has been turned off. Note that if you comment out the ``pyramid_debugtoolbar`` line, the ``#`` -*must* be in the first column. If you put it anywhere else, -and then attempt to restart the application, -you'll receive an error that ends something like this: +*must* be in the first column. If you put it anywhere else, and then +attempt to restart the application, you'll receive an error that ends +something like this: .. code-block:: text @@ -610,7 +611,7 @@ implementations. single: production.ini ``production.ini`` -~~~~~~~~~~~~~~~~~~~ +~~~~~~~~~~~~~~~~~~ The ``production.ini`` file is a :term:`PasteDeploy` configuration file with a purpose much like that of ``development.ini``. However, it disables the @@ -942,7 +943,7 @@ unit tests. .. _modifying_package_structure: Modifying Package Structure ----------------------------- +--------------------------- It is best practice for your application's code layout to not stray too much from accepted Pyramid scaffold defaults. If you refrain from changing -- cgit v1.2.3 From 058e904ce255bb5d4dded8d051655724c3e85514 Mon Sep 17 00:00:00 2001 From: Steve Piercy Date: Mon, 5 Oct 2015 04:20:46 -0700 Subject: - grammar - heading underlines - update images and text for debug toolbar --- docs/narr/project.rst | 80 ++++++++++++++++++++++++++------------------------- 1 file changed, 41 insertions(+), 39 deletions(-) (limited to 'docs/narr/project.rst') diff --git a/docs/narr/project.rst b/docs/narr/project.rst index 76c56157a..d8312b4ea 100644 --- a/docs/narr/project.rst +++ b/docs/narr/project.rst @@ -470,7 +470,7 @@ which contains a Python :term:`package`. The package is *also* named ``myproject``, but it's lowercased; the scaffold generates a project which contains a package that shares its name except for case. -All :app:`Pyramid` ``pcreate`` -generated projects share a similar structure. +All :app:`Pyramid` ``pcreate``-generated projects share a similar structure. The ``MyProject`` project we've generated has the following directory structure: @@ -542,7 +542,7 @@ The generated ``development.ini`` file looks like so: :linenos: This file contains several sections including ``[app:main]``, -``[server:main]`` and several other sections related to logging +``[server:main]``, and several other sections related to logging configuration. The ``[app:main]`` section represents configuration for your :app:`Pyramid` @@ -554,11 +554,11 @@ to the function named ``main`` in our package's ``__init__.py`` module. You can provide startup-time configuration parameters to your application by adding more settings to this section. -.. note:: See :ref:`pastedeploy_entry_points` for more information about the +.. seealso:: See :ref:`pastedeploy_entry_points` for more information about the meaning of the ``use = egg:MyProject`` value in this section. The ``pyramid.reload_templates`` setting in the ``[app:main]`` section is a -:app:`Pyramid` -specific setting which is passed into the framework. If it +:app:`Pyramid`-specific setting which is passed into the framework. If it exists, and its value is ``true``, supported template changes will not require an application restart to be detected. See :ref:`reload_templates_section` for more information. @@ -571,9 +571,10 @@ The ``pyramid.includes`` setting in the ``[app:main]`` section tells Pyramid to "include" configuration from another package. In this case, the line ``pyramid.includes = pyramid_debugtoolbar`` tells Pyramid to include configuration from the ``pyramid_debugtoolbar`` package. This turns on a -debugging panel in development mode which will be shown on the right hand -side of the screen. Including the debug toolbar will also make it possible -to interactively debug exceptions when an error occurs. +debugging panel in development mode which can be opened by clicking on the +:app:`Pyramid` logo on the top right of the screen. Including the debug +toolbar will also make it possible to interactively debug exceptions when an +error occurs. Various other settings may exist in this section having to do with debugging or influencing runtime behavior of a :app:`Pyramid` application. See @@ -597,14 +598,14 @@ and ``# End logging configuration`` represent Python's standard library between these two markers are passed to the `logging module's config file configuration engine `_ when the -``pserve`` or ``pshell`` commands are executed. The default -configuration sends application logging output to the standard error output -of your terminal. For more information about logging configuration, see +``pserve`` or ``pshell`` commands are executed. The default configuration +sends application logging output to the standard error output of your +terminal. For more information about logging configuration, see :ref:`logging_chapter`. See the :term:`PasteDeploy` documentation for more information about other types of things you can put into this ``.ini`` file, such as other -applications, :term:`middleware` and alternate :term:`WSGI` server +applications, :term:`middleware`, and alternate :term:`WSGI` server implementations. .. index:: @@ -736,7 +737,7 @@ For fun, you can try this command now: .. code-block:: text - $ python setup.py sdist + $ $VENV/bin/python setup.py sdist This will create a tarball of your application in a ``dist`` subdirectory named ``MyProject-0.1.tar.gz``. You can send this tarball to other people @@ -765,11 +766,10 @@ The ``myproject`` :term:`package` lives inside the ``MyProject`` #. A ``views.py`` module, which contains view code for the application. -These are purely conventions established by the scaffold: -:app:`Pyramid` doesn't insist that you name things in any particular way. -However, it's generally a good idea to follow Pyramid standards for naming, -so that other Pyramid developers can get up to speed quickly on your code -when you need help. +These are purely conventions established by the scaffold. :app:`Pyramid` +doesn't insist that you name things in any particular way. However, it's +generally a good idea to follow Pyramid standards for naming, so that other +Pyramid developers can get up to speed quickly on your code when you need help. .. index:: single: __init__.py @@ -839,13 +839,13 @@ The view_config decorator asserts that this view be found when a route will match when a visitor visits the root URL. The view_config decorator also names a ``renderer``, which in this case is a template that will be used to render the result of the view callable. This particular view -declaration points at ``templates/mytemplate.pt``, which is a :term:`asset +declaration points at ``templates/mytemplate.pt``, which is an :term:`asset specification` that specifies the ``mytemplate.pt`` file within the ``templates`` directory of the ``myproject`` package. The asset specification could have also been specified as ``myproject:templates/mytemplate.pt``; the leading package name and colon is -optional. The template file pointed to is a :term:`Chameleon` ZPT -template file (``templates/my_template.pt``). +optional. The template file pointed to is a :term:`Chameleon` ZPT template +file (``templates/my_template.pt``). This view callable function is handed a single piece of information: the :term:`request`. The *request* is an instance of the :term:`WebOb` @@ -859,7 +859,7 @@ returns the HTML in a :term:`response`. .. note:: Dictionaries provide values to :term:`template`\s. .. note:: When the application is run with the scaffold's :ref:`default - development.ini ` configuration :ref:`logging is set up + development.ini ` configuration, :ref:`logging is set up ` to aid debugging. If an exception is raised, uncaught tracebacks are displayed after the startup messages on :ref:`the console running the server `. Also @@ -869,7 +869,7 @@ returns the HTML in a :term:`response`. .. note:: ``development.ini`` has a setting that controls how templates are reloaded, ``pyramid.reload_templates``. - - When set to ``True`` (as in the scaffold ``development.ini``) changed + - When set to ``True`` (as in the scaffold ``development.ini``), changed templates automatically reload without a server restart. This is convenient while developing, but slows template rendering speed. @@ -906,7 +906,7 @@ template. It includes CSS and images. ``templates/mytemplate.pt`` ~~~~~~~~~~~~~~~~~~~~~~~~~~~ -The single :term:`Chameleon` template that exists in the project. Its +This is the single :term:`Chameleon` template that exists in the project. Its contents are too long to show here, but it displays a default page when rendered. It is referenced by the call to ``@view_config`` as the ``renderer`` of the ``my_view`` view callable in the ``views.py`` file. See @@ -926,12 +926,13 @@ The ``tests.py`` module includes unit tests for your application. .. literalinclude:: MyProject/myproject/tests.py :language: python + :lines: 1-18 :linenos: This sample ``tests.py`` file has a single unit test defined within it. This test is executed when you run ``python setup.py test``. You may add more tests here as you build your application. You are not required to write -tests to use :app:`Pyramid`, this file is simply provided as convenience and +tests to use :app:`Pyramid`. This file is simply provided for convenience and example. See :ref:`testing_chapter` for more information about writing :app:`Pyramid` @@ -963,7 +964,8 @@ adding a single file for each view. If your project package name was ``myproject`` and you wanted to arrange all your views in a Python subpackage within the ``myproject`` :term:`package` -named ``views`` instead of within a single ``views.py`` file, you might: +named ``views`` instead of within a single ``views.py`` file, you might do the +following. - Create a ``views`` directory inside your ``myproject`` package directory (the same directory which holds ``views.py``). @@ -982,8 +984,8 @@ You can then continue to add view callable functions to the ``blog.py`` module, but you can also add other ``.py`` files which contain view callable functions to the ``views`` directory. As long as you use the ``@view_config`` directive to register views in conjunction with -``config.scan()`` they will be picked up automatically when the application -is restarted. +``config.scan()``, they will be picked up automatically when the application is +restarted. Using the Interactive Shell --------------------------- @@ -998,22 +1000,22 @@ See :ref:`interactive_shell` for more details. What Is This ``pserve`` Thing ----------------------------- -The code generated by an :app:`Pyramid` scaffold assumes that you will be -using the ``pserve`` command to start your application while you do -development. ``pserve`` is a command that reads a :term:`PasteDeploy` -``.ini`` file (e.g. ``development.ini``) and configures a server to serve a -Pyramid application based on the data in the file. +The code generated by a :app:`Pyramid` scaffold assumes that you will be using +the ``pserve`` command to start your application while you do development. +``pserve`` is a command that reads a :term:`PasteDeploy` ``.ini`` file (e.g., +``development.ini``), and configures a server to serve a :app:`Pyramid` +application based on the data in the file. ``pserve`` is by no means the only way to start up and serve a :app:`Pyramid` application. As we saw in :ref:`firstapp_chapter`, ``pserve`` needn't be invoked at all to run a :app:`Pyramid` application. The use of ``pserve`` to -run a :app:`Pyramid` application is purely conventional based on the output -of its scaffolding. But we strongly recommend using ``pserve`` while -developing your application, because many other convenience introspection -commands (such as ``pviews``, ``prequest``, ``proutes`` and others) are also -implemented in terms of configuration availability of this ``.ini`` file -format. It also configures Pyramid logging and provides the ``--reload`` -switch for convenient restarting of the server when code changes. +run a :app:`Pyramid` application is purely conventional based on the output of +its scaffolding. But we strongly recommend using ``pserve`` while developing +your application because many other convenience introspection commands (such as +``pviews``, ``prequest``, ``proutes``, and others) are also implemented in +terms of configuration availability of this ``.ini`` file format. It also +configures Pyramid logging and provides the ``--reload``switch for convenient +restarting of the server when code changes. .. _alternate_wsgi_server: -- cgit v1.2.3 From b7736b4552fb6ba2c1745503f47e947928b293b1 Mon Sep 17 00:00:00 2001 From: Bert JW Regeer Date: Tue, 6 Oct 2015 19:53:17 -0600 Subject: Missing space was causing Sphinx to barf Sphinx was barfing about "Inline literal start-string without end-string.". It barfs no more. --- docs/narr/project.rst | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'docs/narr/project.rst') diff --git a/docs/narr/project.rst b/docs/narr/project.rst index d8312b4ea..c9e89aff4 100644 --- a/docs/narr/project.rst +++ b/docs/narr/project.rst @@ -1014,7 +1014,7 @@ its scaffolding. But we strongly recommend using ``pserve`` while developing your application because many other convenience introspection commands (such as ``pviews``, ``prequest``, ``proutes``, and others) are also implemented in terms of configuration availability of this ``.ini`` file format. It also -configures Pyramid logging and provides the ``--reload``switch for convenient +configures Pyramid logging and provides the ``--reload`` switch for convenient restarting of the server when code changes. .. _alternate_wsgi_server: -- cgit v1.2.3 From a54e4cf75402575ba7b12a03acc0738126c16e2d Mon Sep 17 00:00:00 2001 From: Steve Piercy Date: Thu, 8 Oct 2015 23:52:05 -0700 Subject: wrap 79 cols --- docs/narr/project.rst | 598 ++++++++++++++++++++++++-------------------------- 1 file changed, 290 insertions(+), 308 deletions(-) (limited to 'docs/narr/project.rst') diff --git a/docs/narr/project.rst b/docs/narr/project.rst index c9e89aff4..25f3931e9 100644 --- a/docs/narr/project.rst +++ b/docs/narr/project.rst @@ -3,25 +3,24 @@ Creating a :app:`Pyramid` Project ================================= -As we saw in :ref:`firstapp_chapter`, it's possible to create a -:app:`Pyramid` application completely manually. However, it's usually more -convenient to use a :term:`scaffold` to generate a basic :app:`Pyramid` -:term:`project`. +As we saw in :ref:`firstapp_chapter`, it's possible to create a :app:`Pyramid` +application completely manually. However, it's usually more convenient to use +a :term:`scaffold` to generate a basic :app:`Pyramid` :term:`project`. A project is a directory that contains at least one Python :term:`package`. You'll use a scaffold to create a project, and you'll create your application -logic within a package that lives inside the project. Even if your -application is extremely simple, it is useful to place code that drives the -application within a package, because (1) a package is more easily extended -with new code, and (2) an application that lives inside a package can also be -distributed more easily than one which does not live within a package. +logic within a package that lives inside the project. Even if your application +is extremely simple, it is useful to place code that drives the application +within a package, because (1) a package is more easily extended with new code, +and (2) an application that lives inside a package can also be distributed more +easily than one which does not live within a package. -:app:`Pyramid` comes with a variety of scaffolds that you can use to generate -a project. Each scaffold makes different configuration assumptions about -what type of application you're trying to construct. +:app:`Pyramid` comes with a variety of scaffolds that you can use to generate a +project. Each scaffold makes different configuration assumptions about what +type of application you're trying to construct. -These scaffolds are rendered using the ``pcreate`` command that is installed -as part of Pyramid. +These scaffolds are rendered using the ``pcreate`` command that is installed as +part of Pyramid. .. index:: single: scaffolds @@ -34,11 +33,11 @@ as part of Pyramid. Scaffolds Included with :app:`Pyramid` -------------------------------------- -The convenience scaffolds included with :app:`Pyramid` differ from -each other on a number of axes: +The convenience scaffolds included with :app:`Pyramid` differ from each other +on a number of axes: -- the persistence mechanism they offer (no persistence mechanism, - :term:`ZODB`, or :term:`SQLAlchemy`) +- the persistence mechanism they offer (no persistence mechanism, :term:`ZODB`, + or :term:`SQLAlchemy`) - the mechanism they use to map URLs to code (:term:`traversal` or :term:`URL dispatch`) @@ -52,8 +51,7 @@ The included scaffolds are these: URL mapping via :term:`traversal` and persistence via :term:`ZODB` ``alchemy`` - URL mapping via :term:`URL dispatch` and persistence via - :term:`SQLAlchemy` + URL mapping via :term:`URL dispatch` and persistence via :term:`SQLAlchemy` .. index:: single: creating a project @@ -64,9 +62,9 @@ The included scaffolds are these: Creating the Project -------------------- -In :ref:`installing_chapter`, you created a virtual Python environment via -the ``virtualenv`` command. To start a :app:`Pyramid` :term:`project`, use -the ``pcreate`` command installed within the virtualenv. We'll choose the +In :ref:`installing_chapter`, you created a virtual Python environment via the +``virtualenv`` command. To start a :app:`Pyramid` :term:`project`, use the +``pcreate`` command installed within the virtualenv. We'll choose the ``starter`` scaffold for this purpose. When we invoke ``pcreate``, it will create a directory that represents our project. @@ -101,14 +99,14 @@ Here's sample output from a run of ``pcreate`` on UNIX for a project we name Running /Users/chrism/projects/pyramid/bin/python setup.py egg_info As a result of invoking the ``pcreate`` command, a directory named -``MyProject`` is created. That directory is a :term:`project` directory. -The ``setup.py`` file in that directory can be used to distribute your -application, or install your application for deployment or development. +``MyProject`` is created. That directory is a :term:`project` directory. The +``setup.py`` file in that directory can be used to distribute your application, +or install your application for deployment or development. A ``.ini`` file named ``development.ini`` will be created in the project -directory. You will use this ``.ini`` file to configure a server, to run -your application, and to debug your application. It contains configuration -that enables an interactive debugger and settings optimized for development. +directory. You will use this ``.ini`` file to configure a server, to run your +application, and to debug your application. It contains configuration that +enables an interactive debugger and settings optimized for development. Another ``.ini`` file named ``production.ini`` will also be created in the project directory. It contains configuration that disables any interactive @@ -117,28 +115,28 @@ number of debugging settings. You can use this file to put your application into production. The ``MyProject`` project directory contains an additional subdirectory named -``myproject`` (note the case difference) representing a Python -:term:`package` which holds very simple :app:`Pyramid` sample code. This is -where you'll edit your application's Python code and templates. - -We created this project within an ``env`` virtualenv directory. However, -note that this is not mandatory. The project directory can go more or less -anywhere on your filesystem. You don't need to put it in a special "web -server" directory, and you don't need to put it within a virtualenv -directory. The author uses Linux mainly, and tends to put project -directories which he creates within his ``~/projects`` directory. On -Windows, it's a good idea to put project directories within a directory that -contains no space characters, so it's wise to *avoid* a path that contains, -i.e., ``My Documents``. As a result, the author, when he uses Windows, just -puts his projects in ``C:\projects``. +``myproject`` (note the case difference) representing a Python :term:`package` +which holds very simple :app:`Pyramid` sample code. This is where you'll edit +your application's Python code and templates. + +We created this project within an ``env`` virtualenv directory. However, note +that this is not mandatory. The project directory can go more or less anywhere +on your filesystem. You don't need to put it in a special "web server" +directory, and you don't need to put it within a virtualenv directory. The +author uses Linux mainly, and tends to put project directories which he creates +within his ``~/projects`` directory. On Windows, it's a good idea to put +project directories within a directory that contains no space characters, so +it's wise to *avoid* a path that contains, i.e., ``My Documents``. As a +result, the author, when he uses Windows, just puts his projects in +``C:\projects``. .. warning:: You'll need to avoid using ``pcreate`` to create a project with the same name as a Python standard library component. In particular, this means you - should avoid using the names ``site`` or ``test``, both of which - conflict with Python standard library packages. You should also avoid - using the name ``pyramid``, which will conflict with Pyramid itself. + should avoid using the names ``site`` or ``test``, both of which conflict + with Python standard library packages. You should also avoid using the name + ``pyramid``, which will conflict with Pyramid itself. .. index:: single: setup.py develop @@ -153,10 +151,10 @@ newly created project directory and use the Python interpreter from the command ``python setup.py develop`` The file named ``setup.py`` will be in the root of the pcreate-generated -project directory. The ``python`` you're invoking should be the one that -lives in the ``bin`` (or ``Scripts`` on Windows) directory of your virtual -Python environment. Your terminal's current working directory *must* be the -newly created project directory. +project directory. The ``python`` you're invoking should be the one that lives +in the ``bin`` (or ``Scripts`` on Windows) directory of your virtual Python +environment. Your terminal's current working directory *must* be the newly +created project directory. On UNIX: @@ -181,10 +179,10 @@ Elided output from a run of this command on UNIX is shown below: ... Finished processing dependencies for MyProject==0.0 -This will install a :term:`distribution` representing your project -into the virtual environment interpreter's library set so it can be -found by ``import`` statements and by other console scripts such as -``pserve``, ``pshell``, ``proutes``, and ``pviews``. +This will install a :term:`distribution` representing your project into the +virtual environment interpreter's library set so it can be found by ``import`` +statements and by other console scripts such as ``pserve``, ``pshell``, +``proutes``, and ``pviews``. .. index:: single: running tests @@ -193,8 +191,8 @@ found by ``import`` statements and by other console scripts such as Running the Tests for Your Application -------------------------------------- -To run unit tests for your application, you should invoke them using the -Python interpreter from the :term:`virtualenv` you created during +To run unit tests for your application, you should invoke them using the Python +interpreter from the :term:`virtualenv` you created during :ref:`installing_chapter` (the ``python`` command that lives in the ``bin`` directory of your virtualenv). @@ -278,12 +276,12 @@ Here's sample output from a run of ``pserve`` on UNIX: When you use ``pserve`` to start the application implied by the default rendering of a scaffold, it will respond to requests on *all* IP addresses -possessed by your system, not just requests to ``localhost``. This is what -the ``0.0.0.0`` in ``serving on http://0.0.0.0:6543`` means. The server will -respond to requests made to ``127.0.0.1`` and on any external IP address. -For example, your system might be configured to have an external IP address -``192.168.1.50``. If that's the case, if you use a browser running on the -same system as Pyramid, it will be able to access the application via +possessed by your system, not just requests to ``localhost``. This is what the +``0.0.0.0`` in ``serving on http://0.0.0.0:6543`` means. The server will +respond to requests made to ``127.0.0.1`` and on any external IP address. For +example, your system might be configured to have an external IP address +``192.168.1.50``. If that's the case, if you use a browser running on the same +system as Pyramid, it will be able to access the application via ``http://127.0.0.1:6543/`` as well as via ``http://192.168.1.50:6543/``. However, *other people* on other computers on the same network will also be able to visit your Pyramid application in their browser by visiting @@ -305,28 +303,26 @@ example: You can change the port on which the server runs on by changing the same portion of the ``development.ini`` file. For example, you can change the ``port = 6543`` line in the ``development.ini`` file's ``[server:main]`` -section to ``port = 8080`` to run the server on port 8080 instead of -port 6543. +section to ``port = 8080`` to run the server on port 8080 instead of port 6543. You can shut down a server started this way by pressing ``Ctrl-C`` (or ``Ctrl-Break`` on Windows). The default server used to run your Pyramid application when a project is -created from a scaffold is named :term:`Waitress`. This server is what -prints the ``serving on...`` line when you run ``pserve``. It's a good idea -to use this server during development because it's very simple. It can also -be used for light production. Setting your application up under a different -server is not advised until you've done some development work under the -default server, particularly if you're not yet experienced with Python web -development. Python web server setup can be complex, and you should get some -confidence that your application works in a default environment before trying -to optimize it or make it "more like production". It's awfully easy to get -sidetracked trying to set up a non-default server for hours without actually -starting to do any development. One of the nice things about Python web -servers is that they're largely interchangeable, so if your application works -under the default server, it will almost certainly work under any other -server in production if you eventually choose to use a different one. Don't -worry about it right now. +created from a scaffold is named :term:`Waitress`. This server is what prints +the ``serving on...`` line when you run ``pserve``. It's a good idea to use +this server during development because it's very simple. It can also be used +for light production. Setting your application up under a different server is +not advised until you've done some development work under the default server, +particularly if you're not yet experienced with Python web development. Python +web server setup can be complex, and you should get some confidence that your +application works in a default environment before trying to optimize it or make +it "more like production". It's awfully easy to get sidetracked trying to set +up a non-default server for hours without actually starting to do any +development. One of the nice things about Python web servers is that they're +largely interchangeable, so if your application works under the default server, +it will almost certainly work under any other server in production if you +eventually choose to use a different one. Don't worry about it right now. For more detailed information about the startup process, see :ref:`startup_chapter`. For more information about environment variables and @@ -338,10 +334,10 @@ configuration file settings that influence startup and runtime behavior, see Reloading Code ~~~~~~~~~~~~~~ -During development, it's often useful to run ``pserve`` using its -``--reload`` option. When ``--reload`` is passed to ``pserve``, changes to -any Python module your project uses will cause the server to restart. This -typically makes development easier, as changes to Python code made within a +During development, it's often useful to run ``pserve`` using its ``--reload`` +option. When ``--reload`` is passed to ``pserve``, changes to any Python +module your project uses will cause the server to restart. This typically +makes development easier, as changes to Python code made within a :app:`Pyramid` application is not put into effect until the server restarts. For example, on UNIX: @@ -364,10 +360,10 @@ files, you'll see the server restart automatically: serving on http://0.0.0.0:6543 Changes to template files (such as ``.pt`` or ``.mak`` files) won't cause the -server to restart. Changes to template files don't require a server restart -as long as the ``pyramid.reload_templates`` setting in the -``development.ini`` file is ``true``. Changes made to template files when -this setting is true will take effect immediately without a server restart. +server to restart. Changes to template files don't require a server restart as +long as the ``pyramid.reload_templates`` setting in the ``development.ini`` +file is ``true``. Changes made to template files when this setting is true +will take effect immediately without a server restart. .. index:: single: WSGI @@ -396,22 +392,21 @@ The Debug Toolbar If you click on the :app:`Pyramid` logo at the top right of the page, a new target window will open to present a debug toolbar that provides various -niceties while you're developing. This logo will float above every HTML -page served by :app:`Pyramid` while you develop an application, and allows -you to show the toolbar as necessary. +niceties while you're developing. This logo will float above every HTML page +served by :app:`Pyramid` while you develop an application, and allows you to +show the toolbar as necessary. .. image:: project-debug.png -If you don't see the Pyramid logo on the top right of the page, it means -you're browsing from a system that does not have debugging access. By -default, for security reasons, only a browser originating from ``localhost`` -(``127.0.0.1``) can see the debug toolbar. To allow your browser on a -remote system to access the server, add a line within the ``[app:main]`` -section of the ``development.ini`` file in the form ``debugtoolbar.hosts = X -.X.X.X``. For example, if your Pyramid application is running on a remote -system, and you're browsing from a host with the IP address ``192.168.1.1``, -you'd add something like this to enable the toolbar when your system -contacts Pyramid: +If you don't see the Pyramid logo on the top right of the page, it means you're +browsing from a system that does not have debugging access. By default, for +security reasons, only a browser originating from ``localhost`` (``127.0.0.1``) +can see the debug toolbar. To allow your browser on a remote system to access +the server, add a line within the ``[app:main]`` section of the +``development.ini`` file in the form ``debugtoolbar.hosts = X .X.X.X``. For +example, if your Pyramid application is running on a remote system, and you're +browsing from a host with the IP address ``192.168.1.1``, you'd add something +like this to enable the toolbar when your system contacts Pyramid: .. code-block:: ini @@ -423,9 +418,9 @@ For more information about what the debug toolbar allows you to do, see `the documentation for pyramid_debugtoolbar `_. -The debug toolbar will not be shown (and all debugging will be turned off) -when you use the ``production.ini`` file instead of the ``development.ini`` -ini file to run the application. +The debug toolbar will not be shown (and all debugging will be turned off) when +you use the ``production.ini`` file instead of the ``development.ini`` ini file +to run the application. You can also turn the debug toolbar off by editing ``development.ini`` and commenting out a line. For example, instead of: @@ -451,9 +446,9 @@ Put a hash mark at the beginning of the ``pyramid_debugtoolbar`` line: Then restart the application to see that the toolbar has been turned off. Note that if you comment out the ``pyramid_debugtoolbar`` line, the ``#`` -*must* be in the first column. If you put it anywhere else, and then -attempt to restart the application, you'll receive an error that ends -something like this: +*must* be in the first column. If you put it anywhere else, and then attempt +to restart the application, you'll receive an error that ends something like +this: .. code-block:: text @@ -471,8 +466,7 @@ which contains a Python :term:`package`. The package is *also* named contains a package that shares its name except for case. All :app:`Pyramid` ``pcreate``-generated projects share a similar structure. -The ``MyProject`` project we've generated has the following directory -structure: +The ``MyProject`` project we've generated has the following directory structure: .. code-block:: text @@ -498,29 +492,29 @@ structure: The ``MyProject`` :term:`Project` --------------------------------- -The ``MyProject`` :term:`project` directory is the distribution and -deployment wrapper for your application. It contains both the ``myproject`` +The ``MyProject`` :term:`project` directory is the distribution and deployment +wrapper for your application. It contains both the ``myproject`` :term:`package` representing your application as well as files used to describe, run, and test your application. -#. ``CHANGES.txt`` describes the changes you've made to the application. It - is conventionally written in :term:`ReStructuredText` format. +#. ``CHANGES.txt`` describes the changes you've made to the application. It is + conventionally written in :term:`ReStructuredText` format. #. ``README.txt`` describes the application in general. It is conventionally written in :term:`ReStructuredText` format. -#. ``development.ini`` is a :term:`PasteDeploy` configuration file that can - be used to execute your application during development. +#. ``development.ini`` is a :term:`PasteDeploy` configuration file that can be + used to execute your application during development. -#. ``production.ini`` is a :term:`PasteDeploy` configuration file that can - be used to execute your application in a production configuration. +#. ``production.ini`` is a :term:`PasteDeploy` configuration file that can be + used to execute your application in a production configuration. #. ``MANIFEST.in`` is a :term:`distutils` "manifest" file, naming which files should be included in a source distribution of the package when ``python setup.py sdist`` is run. -#. ``setup.py`` is the file you'll use to test and distribute your - application. It is a standard :term:`setuptools` ``setup.py`` file. +#. ``setup.py`` is the file you'll use to test and distribute your application. + It is a standard :term:`setuptools` ``setup.py`` file. .. index:: single: PasteDeploy @@ -531,9 +525,9 @@ describe, run, and test your application. ``development.ini`` ~~~~~~~~~~~~~~~~~~~ -The ``development.ini`` file is a :term:`PasteDeploy` configuration file. -Its purpose is to specify an application to run when you invoke ``pserve``, -as well as the deployment settings provided to that application. +The ``development.ini`` file is a :term:`PasteDeploy` configuration file. Its +purpose is to specify an application to run when you invoke ``pserve``, as well +as the deployment settings provided to that application. The generated ``development.ini`` file looks like so: @@ -542,33 +536,32 @@ The generated ``development.ini`` file looks like so: :linenos: This file contains several sections including ``[app:main]``, -``[server:main]``, and several other sections related to logging -configuration. +``[server:main]``, and several other sections related to logging configuration. The ``[app:main]`` section represents configuration for your :app:`Pyramid` -application. The ``use`` setting is the only setting required to be present -in the ``[app:main]`` section. Its default value, ``egg:MyProject``, -indicates that our MyProject project contains the application that should be -served. Other settings added to this section are passed as keyword arguments -to the function named ``main`` in our package's ``__init__.py`` module. You -can provide startup-time configuration parameters to your application by -adding more settings to this section. +application. The ``use`` setting is the only setting required to be present in +the ``[app:main]`` section. Its default value, ``egg:MyProject``, indicates +that our MyProject project contains the application that should be served. +Other settings added to this section are passed as keyword arguments to the +function named ``main`` in our package's ``__init__.py`` module. You can +provide startup-time configuration parameters to your application by adding +more settings to this section. .. seealso:: See :ref:`pastedeploy_entry_points` for more information about the meaning of the ``use = egg:MyProject`` value in this section. The ``pyramid.reload_templates`` setting in the ``[app:main]`` section is a :app:`Pyramid`-specific setting which is passed into the framework. If it -exists, and its value is ``true``, supported template changes will not -require an application restart to be detected. See -:ref:`reload_templates_section` for more information. +exists, and its value is ``true``, supported template changes will not require +an application restart to be detected. See :ref:`reload_templates_section` for +more information. .. warning:: The ``pyramid.reload_templates`` option should be turned off for production applications, as template rendering is slowed when it is turned on. -The ``pyramid.includes`` setting in the ``[app:main]`` section tells Pyramid -to "include" configuration from another package. In this case, the line +The ``pyramid.includes`` setting in the ``[app:main]`` section tells Pyramid to +"include" configuration from another package. In this case, the line ``pyramid.includes = pyramid_debugtoolbar`` tells Pyramid to include configuration from the ``pyramid_debugtoolbar`` package. This turns on a debugging panel in development mode which can be opened by clicking on the @@ -576,14 +569,14 @@ debugging panel in development mode which can be opened by clicking on the toolbar will also make it possible to interactively debug exceptions when an error occurs. -Various other settings may exist in this section having to do with debugging -or influencing runtime behavior of a :app:`Pyramid` application. See +Various other settings may exist in this section having to do with debugging or +influencing runtime behavior of a :app:`Pyramid` application. See :ref:`environment_chapter` for more information about these settings. The name ``main`` in ``[app:main]`` signifies that this is the default application run by ``pserve`` when it is invoked against this configuration -file. The name ``main`` is a convention used by PasteDeploy signifying that -it is the default application. +file. The name ``main`` is a convention used by PasteDeploy signifying that it +is the default application. The ``[server:main]`` section of the configuration file configures a WSGI server which listens on TCP port 6543. It is configured to listen on all @@ -594,14 +587,12 @@ access to your system can see your Pyramid application. The sections that live between the markers ``# Begin logging configuration`` and ``# End logging configuration`` represent Python's standard library -:mod:`logging` module configuration for your application. The sections -between these two markers are passed to the `logging module's config file -configuration engine -`_ when the -``pserve`` or ``pshell`` commands are executed. The default configuration -sends application logging output to the standard error output of your -terminal. For more information about logging configuration, see -:ref:`logging_chapter`. +:mod:`logging` module configuration for your application. The sections between +these two markers are passed to the `logging module's config file configuration +engine `_ when +the ``pserve`` or ``pshell`` commands are executed. The default configuration +sends application logging output to the standard error output of your terminal. +For more information about logging configuration, see :ref:`logging_chapter`. See the :term:`PasteDeploy` documentation for more information about other types of things you can put into this ``.ini`` file, such as other @@ -614,20 +605,20 @@ implementations. ``production.ini`` ~~~~~~~~~~~~~~~~~~ -The ``production.ini`` file is a :term:`PasteDeploy` configuration file with -a purpose much like that of ``development.ini``. However, it disables the -debug toolbar, and filters all log messages except those above the WARN -level. It also turns off template development options such that templates -are not automatically reloaded when changed, and turns off all debugging -options. This file is appropriate to use instead of ``development.ini`` when -you put your application into production. +The ``production.ini`` file is a :term:`PasteDeploy` configuration file with a +purpose much like that of ``development.ini``. However, it disables the debug +toolbar, and filters all log messages except those above the WARN level. It +also turns off template development options such that templates are not +automatically reloaded when changed, and turns off all debugging options. This +file is appropriate to use instead of ``development.ini`` when you put your +application into production. It's important to use ``production.ini`` (and *not* ``development.ini``) to benchmark your application and put it into production. ``development.ini`` configures your system with a debug toolbar that helps development, but the inclusion of this toolbar slows down page rendering times by over an order of -magnitude. The debug toolbar is also a potential security risk if you have -it configured incorrectly. +magnitude. The debug toolbar is also a potential security risk if you have it +configured incorrectly. .. index:: single: MANIFEST.in @@ -639,42 +630,40 @@ The ``MANIFEST.in`` file is a :term:`distutils` configuration file which specifies the non-Python files that should be included when a :term:`distribution` of your Pyramid project is created when you run ``python setup.py sdist``. Due to the information contained in the default -``MANIFEST.in``, an sdist of your Pyramid project will include ``.txt`` -files, ``.ini`` files, ``.rst`` files, graphics files, and template files, as -well as ``.py`` files. See +``MANIFEST.in``, an sdist of your Pyramid project will include ``.txt`` files, +``.ini`` files, ``.rst`` files, graphics files, and template files, as well as +``.py`` files. See http://docs.python.org/distutils/sourcedist.html#the-manifest-in-template for more information about the syntax and usage of ``MANIFEST.in``. -Without the presence of a ``MANIFEST.in`` file or without checking your -source code into a version control repository, ``setup.py sdist`` places only -*Python source files* (files ending with a ``.py`` extension) into tarballs -generated by ``python setup.py sdist``. This means, for example, if your -project was not checked into a setuptools-compatible source control system, -and your project directory didn't contain a ``MANIFEST.in`` file that told -the ``sdist`` machinery to include ``*.pt`` files, the -``myproject/templates/mytemplate.pt`` file would not be included in the -generated tarball. - -Projects generated by Pyramid scaffolds include a default ``MANIFEST.in`` -file. The ``MANIFEST.in`` file contains declarations which tell it to -include files like ``*.pt``, ``*.css`` and ``*.js`` in the generated tarball. -If you include files with extensions other than the files named in the -project's ``MANIFEST.in`` and you don't make use of a setuptools-compatible -version control system, you'll need to edit the ``MANIFEST.in`` file and -include the statements necessary to include your new files. See -http://docs.python.org/distutils/sourcedist.html#principle for more -information about how to do this. - -You can also delete ``MANIFEST.in`` from your project and rely on a -setuptools feature which simply causes all files checked into a version -control system to be put into the generated tarball. To allow this to -happen, check all the files that you'd like to be distributed along with your -application's Python files into Subversion. After you do this, when you -rerun ``setup.py sdist``, all files checked into the version control system -will be included in the tarball. If you don't use Subversion, and instead -use a different version control system, you may need to install a setuptools -add-on such as ``setuptools-git`` or ``setuptools-hg`` for this behavior to -work properly. +Without the presence of a ``MANIFEST.in`` file or without checking your source +code into a version control repository, ``setup.py sdist`` places only *Python +source files* (files ending with a ``.py`` extension) into tarballs generated +by ``python setup.py sdist``. This means, for example, if your project was not +checked into a setuptools-compatible source control system, and your project +directory didn't contain a ``MANIFEST.in`` file that told the ``sdist`` +machinery to include ``*.pt`` files, the ``myproject/templates/mytemplate.pt`` +file would not be included in the generated tarball. + +Projects generated by Pyramid scaffolds include a default ``MANIFEST.in`` file. +The ``MANIFEST.in`` file contains declarations which tell it to include files +like ``*.pt``, ``*.css`` and ``*.js`` in the generated tarball. If you include +files with extensions other than the files named in the project's +``MANIFEST.in`` and you don't make use of a setuptools-compatible version +control system, you'll need to edit the ``MANIFEST.in`` file and include the +statements necessary to include your new files. See +http://docs.python.org/distutils/sourcedist.html#principle for more information +about how to do this. + +You can also delete ``MANIFEST.in`` from your project and rely on a setuptools +feature which simply causes all files checked into a version control system to +be put into the generated tarball. To allow this to happen, check all the +files that you'd like to be distributed along with your application's Python +files into Subversion. After you do this, when you rerun ``setup.py sdist``, +all files checked into the version control system will be included in the +tarball. If you don't use Subversion, and instead use a different version +control system, you may need to install a setuptools add-on such as +``setuptools-git`` or ``setuptools-hg`` for this behavior to work properly. .. index:: single: setup.py @@ -688,11 +677,11 @@ testing, packaging, and distributing your application. .. note:: - ``setup.py`` is the de facto standard which Python developers use to - distribute their reusable code. You can read more about ``setup.py`` files - and their usage in the `Setuptools documentation - `_ and `The - Hitchhiker's Guide to Packaging `_. + ``setup.py`` is the de facto standard which Python developers use to + distribute their reusable code. You can read more about ``setup.py`` files + and their usage in the `Setuptools documentation + `_ and `The Hitchhiker's + Guide to Packaging `_. Our generated ``setup.py`` looks like this: @@ -701,47 +690,47 @@ Our generated ``setup.py`` looks like this: :linenos: The ``setup.py`` file calls the setuptools ``setup`` function, which does -various things depending on the arguments passed to ``setup.py`` on the -command line. +various things depending on the arguments passed to ``setup.py`` on the command +line. -Within the arguments to this function call, information about your -application is kept. While it's beyond the scope of this documentation to -explain everything about setuptools setup files, we'll provide a whirlwind -tour of what exists in this file in this section. +Within the arguments to this function call, information about your application +is kept. While it's beyond the scope of this documentation to explain +everything about setuptools setup files, we'll provide a whirlwind tour of what +exists in this file in this section. Your application's name can be any string; it is specified in the ``name`` field. The version number is specified in the ``version`` value. A short -description is provided in the ``description`` field. The -``long_description`` is conventionally the content of the README and CHANGES -file appended together. The ``classifiers`` field is a list of `Trove +description is provided in the ``description`` field. The ``long_description`` +is conventionally the content of the README and CHANGES file appended together. +The ``classifiers`` field is a list of `Trove `_ classifiers describing your application. ``author`` and ``author_email`` are text fields which probably don't need any description. ``url`` is a field that should -point at your application project's URL (if any). -``packages=find_packages()`` causes all packages within the project to be -found when packaging the application. ``include_package_data`` will include -non-Python files when the application is packaged if those files are checked -into version control. ``zip_safe`` indicates that this package is not safe -to use as a zipped egg; instead it will always unpack as a directory, which -is more convenient. ``install_requires`` and ``tests_require`` indicate that -this package depends on the ``pyramid`` package. ``test_suite`` points at -the package for our application, which means all tests found in the package -will be run when ``setup.py test`` is invoked. We examined ``entry_points`` -in our discussion of the ``development.ini`` file; this file defines the -``main`` entry point that represents our project's application. - -Usually you only need to think about the contents of the ``setup.py`` file -when distributing your application to other people, when adding Python -package dependencies, or when versioning your application for your own use. -For fun, you can try this command now: +point at your application project's URL (if any). ``packages=find_packages()`` +causes all packages within the project to be found when packaging the +application. ``include_package_data`` will include non-Python files when the +application is packaged if those files are checked into version control. +``zip_safe`` indicates that this package is not safe to use as a zipped egg; +instead it will always unpack as a directory, which is more convenient. +``install_requires`` and ``tests_require`` indicate that this package depends +on the ``pyramid`` package. ``test_suite`` points at the package for our +application, which means all tests found in the package will be run when +``setup.py test`` is invoked. We examined ``entry_points`` in our discussion +of the ``development.ini`` file; this file defines the ``main`` entry point +that represents our project's application. + +Usually you only need to think about the contents of the ``setup.py`` file when +distributing your application to other people, when adding Python package +dependencies, or when versioning your application for your own use. For fun, +you can try this command now: .. code-block:: text $ $VENV/bin/python setup.py sdist -This will create a tarball of your application in a ``dist`` subdirectory -named ``MyProject-0.1.tar.gz``. You can send this tarball to other people -who want to install and use your application. +This will create a tarball of your application in a ``dist`` subdirectory named +``MyProject-0.1.tar.gz``. You can send this tarball to other people who want +to install and use your application. .. index:: single: package @@ -752,19 +741,17 @@ The ``myproject`` :term:`Package` The ``myproject`` :term:`package` lives inside the ``MyProject`` :term:`project`. It contains: -#. An ``__init__.py`` file signifies that this is a Python :term:`package`. - It also contains code that helps users run the application, including a +#. An ``__init__.py`` file signifies that this is a Python :term:`package`. It + also contains code that helps users run the application, including a ``main`` function which is used as a entry point for commands such as ``pserve``, ``pshell``, ``pviews``, and others. -#. A ``templates`` directory, which contains :term:`Chameleon` (or - other types of) templates. +#. A ``templates`` directory, which contains :term:`Chameleon` (or other types + of) templates. -#. A ``tests.py`` module, which contains unit test code for the - application. +#. A ``tests.py`` module, which contains unit test code for the application. -#. A ``views.py`` module, which contains view code for the - application. +#. A ``views.py`` module, which contains view code for the application. These are purely conventions established by the scaffold. :app:`Pyramid` doesn't insist that you name things in any particular way. However, it's @@ -803,11 +790,11 @@ also informs Python that the directory which contains it is a *package*. specify renderers with the ``.pt`` extension. Line 9 registers a static view, which will serve up the files from the - ``myproject:static`` :term:`asset specification` (the ``static`` - directory of the ``myproject`` package). + ``myproject:static`` :term:`asset specification` (the ``static`` directory + of the ``myproject`` package). - Line 10 adds a :term:`route` to the configuration. This route is later - used by a view in the ``views`` module. + Line 10 adds a :term:`route` to the configuration. This route is later used + by a view in the ``views`` module. Line 11 calls ``config.scan()``, which picks up view registrations declared elsewhere in the package (in this case, in the ``views.py`` module). @@ -823,38 +810,37 @@ also informs Python that the directory which contains it is a *package*. Much of the heavy lifting in a :app:`Pyramid` application is done by *view callables*. A :term:`view callable` is the main tool of a :app:`Pyramid` web -application developer; it is a bit of code which accepts a :term:`request` -and which returns a :term:`response`. +application developer; it is a bit of code which accepts a :term:`request` and +which returns a :term:`response`. .. literalinclude:: MyProject/myproject/views.py :language: python :linenos: Lines 4-6 define and register a :term:`view callable` named ``my_view``. The -function named ``my_view`` is decorated with a ``view_config`` decorator -(which is processed by the ``config.scan()`` line in our ``__init__.py``). -The view_config decorator asserts that this view be found when a -:term:`route` named ``home`` is matched. In our case, because our -``__init__.py`` maps the route named ``home`` to the URL pattern ``/``, this -route will match when a visitor visits the root URL. The view_config -decorator also names a ``renderer``, which in this case is a template that -will be used to render the result of the view callable. This particular view -declaration points at ``templates/mytemplate.pt``, which is an :term:`asset -specification` that specifies the ``mytemplate.pt`` file within the -``templates`` directory of the ``myproject`` package. The asset -specification could have also been specified as -``myproject:templates/mytemplate.pt``; the leading package name and colon is +function named ``my_view`` is decorated with a ``view_config`` decorator (which +is processed by the ``config.scan()`` line in our ``__init__.py``). The +view_config decorator asserts that this view be found when a :term:`route` +named ``home`` is matched. In our case, because our ``__init__.py`` maps the +route named ``home`` to the URL pattern ``/``, this route will match when a +visitor visits the root URL. The view_config decorator also names a +``renderer``, which in this case is a template that will be used to render the +result of the view callable. This particular view declaration points at +``templates/mytemplate.pt``, which is an :term:`asset specification` that +specifies the ``mytemplate.pt`` file within the ``templates`` directory of the +``myproject`` package. The asset specification could have also been specified +as ``myproject:templates/mytemplate.pt``; the leading package name and colon is optional. The template file pointed to is a :term:`Chameleon` ZPT template file (``templates/my_template.pt``). This view callable function is handed a single piece of information: the -:term:`request`. The *request* is an instance of the :term:`WebOb` -``Request`` class representing the browser's request to our server. +:term:`request`. The *request* is an instance of the :term:`WebOb` ``Request`` +class representing the browser's request to our server. This view is configured to invoke a :term:`renderer` on a template. The dictionary the view returns (on line 6) provides the value the renderer -substitutes into the template when generating HTML. The renderer then -returns the HTML in a :term:`response`. +substitutes into the template when generating HTML. The renderer then returns +the HTML in a :term:`response`. .. note:: Dictionaries provide values to :term:`template`\s. @@ -863,8 +849,8 @@ returns the HTML in a :term:`response`. ` to aid debugging. If an exception is raised, uncaught tracebacks are displayed after the startup messages on :ref:`the console running the server `. Also - ``print()`` statements may be inserted into the application for debugging - to send output to this console. + ``print()`` statements may be inserted into the application for debugging to + send output to this console. .. note:: ``development.ini`` has a setting that controls how templates are reloaded, ``pyramid.reload_templates``. @@ -873,14 +859,14 @@ returns the HTML in a :term:`response`. templates automatically reload without a server restart. This is convenient while developing, but slows template rendering speed. - - When set to ``False`` (the default value), changing templates requires - a server restart to reload them. Production applications should use + - When set to ``False`` (the default value), changing templates requires a + server restart to reload them. Production applications should use ``pyramid.reload_templates = False``. .. seealso:: - See also :ref:`views_which_use_a_renderer` for more information - about how views, renderers, and templates relate and cooperate. + See also :ref:`views_which_use_a_renderer` for more information about how + views, renderers, and templates relate and cooperate. .. seealso:: @@ -908,8 +894,8 @@ template. It includes CSS and images. This is the single :term:`Chameleon` template that exists in the project. Its contents are too long to show here, but it displays a default page when -rendered. It is referenced by the call to ``@view_config`` as the -``renderer`` of the ``my_view`` view callable in the ``views.py`` file. See +rendered. It is referenced by the call to ``@view_config`` as the ``renderer`` +of the ``my_view`` view callable in the ``views.py`` file. See :ref:`views_which_use_a_renderer` for more information about renderers. Templates are accessed and used by view configurations and sometimes by view @@ -930,10 +916,9 @@ The ``tests.py`` module includes unit tests for your application. :linenos: This sample ``tests.py`` file has a single unit test defined within it. This -test is executed when you run ``python setup.py test``. You may add more -tests here as you build your application. You are not required to write -tests to use :app:`Pyramid`. This file is simply provided for convenience and -example. +test is executed when you run ``python setup.py test``. You may add more tests +here as you build your application. You are not required to write tests to use +:app:`Pyramid`. This file is simply provided for convenience and example. See :ref:`testing_chapter` for more information about writing :app:`Pyramid` unit tests. @@ -947,28 +932,27 @@ Modifying Package Structure --------------------------- It is best practice for your application's code layout to not stray too much -from accepted Pyramid scaffold defaults. If you refrain from changing -things very much, other Pyramid coders will be able to more quickly -understand your application. However, the code layout choices made for you -by a scaffold are in no way magical or required. Despite the choices -made for you by any scaffold, you can decide to lay your code out any -way you see fit. +from accepted Pyramid scaffold defaults. If you refrain from changing things +very much, other Pyramid coders will be able to more quickly understand your +application. However, the code layout choices made for you by a scaffold are +in no way magical or required. Despite the choices made for you by any +scaffold, you can decide to lay your code out any way you see fit. For example, the configuration method named :meth:`~pyramid.config.Configurator.add_view` requires you to pass a :term:`dotted Python name` or a direct object reference as the class or -function to be used as a view. By default, the ``starter`` scaffold would -have you add view functions to the ``views.py`` module in your package. -However, you might be more comfortable creating a ``views`` *directory*, and -adding a single file for each view. +function to be used as a view. By default, the ``starter`` scaffold would have +you add view functions to the ``views.py`` module in your package. However, you +might be more comfortable creating a ``views`` *directory*, and adding a single +file for each view. If your project package name was ``myproject`` and you wanted to arrange all your views in a Python subpackage within the ``myproject`` :term:`package` named ``views`` instead of within a single ``views.py`` file, you might do the following. -- Create a ``views`` directory inside your ``myproject`` package directory - (the same directory which holds ``views.py``). +- Create a ``views`` directory inside your ``myproject`` package directory (the + same directory which holds ``views.py``). - Create a file within the new ``views`` directory named ``__init__.py``. (It can be empty. This just tells Python that the ``views`` directory is a @@ -980,20 +964,19 @@ following. specification` values in ``blog.py`` must now be fully qualified with the project's package name (``myproject:templates/blog.pt``). -You can then continue to add view callable functions to the ``blog.py`` -module, but you can also add other ``.py`` files which contain view callable -functions to the ``views`` directory. As long as you use the -``@view_config`` directive to register views in conjunction with -``config.scan()``, they will be picked up automatically when the application is -restarted. +You can then continue to add view callable functions to the ``blog.py`` module, +but you can also add other ``.py`` files which contain view callable functions +to the ``views`` directory. As long as you use the ``@view_config`` directive +to register views in conjunction with ``config.scan()``, they will be picked up +automatically when the application is restarted. Using the Interactive Shell --------------------------- It is possible to use the ``pshell`` command to load a Python interpreter -prompt with a similar configuration as would be loaded if you were running -your Pyramid application via ``pserve``. This can be a useful debugging tool. -See :ref:`interactive_shell` for more details. +prompt with a similar configuration as would be loaded if you were running your +Pyramid application via ``pserve``. This can be a useful debugging tool. See +:ref:`interactive_shell` for more details. .. _what_is_this_pserve_thing: @@ -1022,30 +1005,29 @@ restarting of the server when code changes. Using an Alternate WSGI Server ------------------------------ -Pyramid scaffolds generate projects which use the :term:`Waitress` WSGI -server. Waitress is a server that is suited for development and light -production usage. It's not the fastest nor the most featureful WSGI server. -Instead, its main feature is that it works on all platforms that Pyramid -needs to run on, making it a good choice as a default server from the -perspective of Pyramid's developers. +Pyramid scaffolds generate projects which use the :term:`Waitress` WSGI server. +Waitress is a server that is suited for development and light production +usage. It's not the fastest nor the most featureful WSGI server. Instead, its +main feature is that it works on all platforms that Pyramid needs to run on, +making it a good choice as a default server from the perspective of Pyramid's +developers. Any WSGI server is capable of running a :app:`Pyramid` application. But we -suggest you stick with the default server for development, and that you wait -to investigate other server options until you're ready to deploy your -application to production. Unless for some reason you need to develop on a -non-local system, investigating alternate server options is usually a -distraction until you're ready to deploy. But we recommend developing using -the default configuration on a local system that you have complete control -over; it will provide the best development experience. +suggest you stick with the default server for development, and that you wait to +investigate other server options until you're ready to deploy your application +to production. Unless for some reason you need to develop on a non-local +system, investigating alternate server options is usually a distraction until +you're ready to deploy. But we recommend developing using the default +configuration on a local system that you have complete control over; it will +provide the best development experience. One popular production alternative to the default Waitress server is -:term:`mod_wsgi`. You can use mod_wsgi to serve your :app:`Pyramid` -application using the Apache web server rather than any "pure-Python" server -like Waitress. It is fast and featureful. See :ref:`modwsgi_tutorial` for -details. +:term:`mod_wsgi`. You can use mod_wsgi to serve your :app:`Pyramid` application +using the Apache web server rather than any "pure-Python" server like Waitress. +It is fast and featureful. See :ref:`modwsgi_tutorial` for details. Another good production alternative is :term:`Green Unicorn` (aka -``gunicorn``). It's faster than Waitress and slightly easier to configure -than mod_wsgi, although it depends, in its default configuration, on having a -buffering HTTP proxy in front of it. It does not, as of this writing, work -on Windows. +``gunicorn``). It's faster than Waitress and slightly easier to configure than +mod_wsgi, although it depends, in its default configuration, on having a +buffering HTTP proxy in front of it. It does not, as of this writing, work on +Windows. -- cgit v1.2.3