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@ -4,10 +4,9 @@ Deploying with Setuptools
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========================= |
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`Setuptools`_, is an extension library that is commonly used to |
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(like the name says) distribute Python libraries and |
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extensions. It extends distutils, a basic module installation system |
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shipped with Python to also support various more complex constructs that |
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make larger applications easier to distribute: |
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distribute Python libraries and extensions. It extends distutils, a basic |
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module installation system shipped with Python to also support various more |
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complex constructs that make larger applications easier to distribute: |
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- **support for dependencies**: a library or application can declare a |
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list of other libraries it depends on which will be installed |
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@ -16,15 +15,15 @@ make larger applications easier to distribute:
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Python installation. This makes it possible to query information |
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provided by one package from another package. The best known feature of |
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this system is the entry point support which allows one package to |
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declare an "entry point" another package can hook into to extend the |
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declare an "entry point" that another package can hook into to extend the |
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other package. |
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- **installation manager**: :command:`easy_install`, which comes with distribute |
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can install other libraries for you. You can also use `pip`_ which |
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- **installation manager**: :command:`easy_install`, which comes with setuptools |
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can install other libraries for you. You can also use :command:`pip`_ which |
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sooner or later will replace :command:`easy_install` which does more than just |
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installing packages for you. |
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Flask itself, and all the libraries you can find on the cheeseshop |
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are distributed with either distribute, the older setuptools or distutils. |
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Flask itself, and all the libraries you can find on PyPI are distributed with |
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either setuptools or distutils. |
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In this case we assume your application is called |
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:file:`yourapplication.py` and you are not using a module, but a :ref:`package |
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@ -32,7 +31,7 @@ In this case we assume your application is called
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a package, head over to the :ref:`larger-applications` pattern to see |
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how this can be done. |
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A working deployment with distribute is the first step into more complex |
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A working deployment with setuptools is the first step into more complex |
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and more automated deployment scenarios. If you want to fully automate |
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the process, also read the :ref:`fabric-deployment` chapter. |
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@ -66,7 +65,7 @@ A basic :file:`setup.py` file for a Flask application looks like this::
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) |
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Please keep in mind that you have to list subpackages explicitly. If you |
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want distribute to lookup the packages for you automatically, you can use |
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want setuptools to lookup the packages for you automatically, you can use |
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the `find_packages` function:: |
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from setuptools import setup, find_packages |
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@ -78,7 +77,7 @@ the `find_packages` function::
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Most parameters to the `setup` function should be self explanatory, |
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`include_package_data` and `zip_safe` might not be. |
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`include_package_data` tells distribute to look for a :file:`MANIFEST.in` file |
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`include_package_data` tells setuptools to look for a :file:`MANIFEST.in` file |
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and install all the entries that match as package data. We will use this |
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to distribute the static files and templates along with the Python module |
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(see :ref:`distributing-resources`). The `zip_safe` flag can be used to |
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@ -94,7 +93,7 @@ Distributing Resources
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If you try to install the package you just created, you will notice that |
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folders like :file:`static` or :file:`templates` are not installed for you. The |
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reason for this is that distribute does not know which files to add for |
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reason for this is that setuptools does not know which files to add for |
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you. What you should do, is to create a :file:`MANIFEST.in` file next to your |
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:file:`setup.py` file. This file lists all the files that should be added to |
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your tarball:: |
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@ -110,7 +109,7 @@ parameter of the `setup` function to ``True``!
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Declaring Dependencies |
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---------------------- |
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Dependencies are declared in the `install_requires` parameter as list. |
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Dependencies are declared in the `install_requires` parameter as a list. |
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Each item in that list is the name of a package that should be pulled from |
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PyPI on installation. By default it will always use the most recent |
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version, but you can also provide minimum and maximum version |
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@ -125,15 +124,15 @@ requirements. Here some examples::
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As mentioned earlier, dependencies are pulled from PyPI. What if you |
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want to depend on a package that cannot be found on PyPI and won't be |
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because it is an internal package you don't want to share with anyone? |
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Just still do as if there was a PyPI entry for it and provide a list of |
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alternative locations where distribute should look for tarballs:: |
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Just do it as if there was a PyPI entry and provide a list of |
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alternative locations where setuptools should look for tarballs:: |
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dependency_links=['http://example.com/yourfiles'] |
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Make sure that page has a directory listing and the links on the page are |
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pointing to the actual tarballs with their correct filenames as this is |
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how distribute will find the files. If you have an internal company |
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server that contains the packages, provide the URL to that server there. |
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how setuptools will find the files. If you have an internal company |
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server that contains the packages, provide the URL to that server. |
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Installing / Developing |
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