[docs] [issue27408] Document importlib.abc.ExecutionLoader implements get_data()

[Brett Cannon]

New submission from Brett Cannon:

The fact that importlib.abc.ExectionLoader.get_data() is implemented is missing (or put another way, it isn't documented that get_source() still needs to be implemented).

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assignee: docs at python
components: Documentation
messages: 269458
nosy: brett.cannon, docs at python
priority: normal
severity: normal
stage: needs patch
status: open
title: Document importlib.abc.ExecutionLoader implements get_data()
versions: Python 3.5, Python 3.6

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27408>
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