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.. _development:
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Development Tools
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The modules described in this chapter help you write software. For example, the
:mod:`pydoc` module takes a module and generates documentation based on the
module's contents. The :mod:`doctest` and :mod:`unittest` modules contains
frameworks for writing unit tests that automatically exercise code and verify
that the expected output is produced. :program:`2to3` can translate Python 2.x
source code into valid Python 3.x code.
The list of modules described in this chapter is:
.. toctree::
typing.rst
pydoc.rst
doctest.rst
unittest.rst
unittest.mock.rst
unittest.mock-examples.rst
2to3.rst
test.rst
See also the Python development mode: the :option:`-X` ``dev`` option and
:envvar:`PYTHONDEVMODE` environment variable.