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python-3.7.4-docs-html/_sources/library/development.rst.txt

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+.. _development:
+
+*****************
+Development Tools
+*****************
+
+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.