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=============================
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IPython module reorganization
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=============================
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Currently, IPython has many top-level modules that serve many different
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purposes. The lack of organization make it very difficult for developers to
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work on IPython and understand its design. This document contains notes about
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how we will reorganize the modules into sub-packages.
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.. warning::
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This effort will possibly break third party packages that use IPython as
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a library or hack on the IPython internals.
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.. warning::
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This effort will result in the removal from IPython of certain modules
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that are not used anymore, don't currently work, are unmaintained, etc.
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Current subpackges
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==================
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IPython currently has the following sub-packages:
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* :mod:`IPython.config`
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* :mod:`IPython.Extensions`
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* :mod:`IPython.external`
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* :mod:`IPython.frontend`
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* :mod:`IPython.gui`
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* :mod:`IPython.kernel`
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* :mod:`IPython.testing`
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* :mod:`IPython.tests`
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* :mod:`IPython.tools`
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* :mod:`IPython.UserConfig`
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New Subpackages to be created
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=============================
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We propose to create the following new sub-packages:
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* :mod:`IPython.core`. This sub-package will contain the core of the IPython
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interpreter, but none of its extended capabilities.
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* :mod:`IPython.lib`. IPython has many extended capabilities that are not part
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of the IPython core. These things will go here.
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* :mod:`IPython.utils`. This sub-package will contain anything that might
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eventually be found in the Python standard library, like things in
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:mod:`genutils`. Each sub-module in this sub-package should contain
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functions and classes that serve a single purpose.
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* :mod:`IPython.deathrow`. This is for code that is untested and/or rotting
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and needs to be removed from IPython. Eventually all this code will either
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i) be revived by someone willing to maintain it with tests and docs and
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re-included into IPython or 2) be removed from IPython proper, but put into
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a separate top-level (not IPython) package that we keep around. No new code
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will be allowed here.
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* :mod:`IPython.quarantine`. This is for code that doesn't meet IPython's
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standards, but that we plan on keeping. To be moved out of this sub-package
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a module needs to have a maintainer, tests and documentation.
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Procedure
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=========
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1. Move the file to its new location with its new name.
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2. Rename all import statements to reflect the change.
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3. Run PyFlakes on each changes module.
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4. Add tests/test_imports.py to test it.
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Status
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======
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This branch was merged into trunk in early August of 2009.
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