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fix docs about syspath_prepend 

eg it does not modify $PATH
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Thomas Grainger 2019-07-24 14:27:05 +01:00 committed by GitHub
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doc/en/monkeypatch.rst
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@ -46,10 +46,13 @@ environment variable is missing, or to set multiple values to a known variable.
:py:meth:`monkeypatch.setenv` and :py:meth:`monkeypatch.delenv` can be used for
these patches.
4. Use :py:meth:`monkeypatch.syspath_prepend` to modify the system ``$PATH`` safely, and
4. Use `monkeypatch.setenv("PATH", value, prepend=True)` to modify ``$PATH``, and
:py:meth:`monkeypatch.chdir` to change the context of the current working directory
during a test.
5. Use py:meth:`monkeypatch.syspath_prepend` to modify ``sys.path`` which will also
call :py:meth:`pkg_resources.fixup_namespace_packages` and :py:meth:`importlib.invalidate_caches`.
See the `monkeypatch blog post`_ for some introduction material
and a discussion of its motivation.