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Mark up environment variables
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@@ -17,13 +17,13 @@ e.g. Python version 2.7 will install at :file:`C:\Python27\`, so that you can
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have multiple versions of Python on the
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same system without conflicts. Of course, only one interpreter can be the
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default application for Python file types. It also does not automatically
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modify the ``PATH`` environment variable, so that you always have control over
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modify the :envvar:`PATH` environment variable, so that you always have control over
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which copy of Python is run.
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Typing the full path name for a Python interpreter each time quickly gets
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tedious, so add the directories for your default Python version to the PATH.
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tedious, so add the directories for your default Python version to the :envvar:`PATH`.
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Assuming that your Python installation is in :file:`C:\Python27\`, add this to your
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PATH:
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:envvar:`PATH`:
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.. code-block:: console
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