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bpo-44388: Update venv EnvBuilder.ensure_directories() docs. (GH-26663) 

Ref: 

This changes the documentation for `EnvBuilder.ensure_directories(env_dir)` to match the actual behavior of that API call.

In particular, `ensure_directories()` is not affected by the state of the `upgrade` attribute, and will not cause an error to have existing directories whether or not the `clear` attribute is set.

This documentation change I believe should be valid to all python versions back to 3.6.

Automerge-Triggered-By: GH:vsajip
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Matthew Clapp 2021-07-02 13:48:15 -07:00 committed by GitHub
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@ -170,11 +170,12 @@ creation according to their needs, the :class:`EnvBuilder` class.
.. method:: ensure_directories(env_dir)
Creates the environment directory and all necessary directories, and
returns a context object. This is just a holder for attributes (such as
paths), for use by the other methods. The directories are allowed to
exist already, as long as either ``clear`` or ``upgrade`` were
specified to allow operating on an existing environment directory.
Creates the environment directory and all necessary subdirectories that
don't already exist, and returns a context object. This context object
is just a holder for attributes (such as paths) for use by the other
methods. If the :class:`EnvBuilder` is created with the arg
``clear=True``, contents of the environment directory will be cleared
and then all necessary subdirectories will be recreated.
.. method:: create_configuration(context)