bpo-31454: Include information about "import X as Y" in Modules tutorial (GH-4041)
(cherry picked from commit fbee88244e
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Co-authored-by: Mario Corchero <mariocj89@gmail.com>
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@ -112,6 +112,25 @@ Note that in general the practice of importing ``*`` from a module or package is
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frowned upon, since it often causes poorly readable code. However, it is okay to
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use it to save typing in interactive sessions.
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If the module name is followed by :keyword:`as`, then the name
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following :keyword:`as` is bound directly to the imported module.
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::
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>>> import fibo as fib
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>>> fib.fib(500)
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0 1 1 2 3 5 8 13 21 34 55 89 144 233 377
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This is effectively importing the module in the same way that ``import fibo``
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will do, with the only difference of it being available as ``fib``.
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It can also be used when utilising :keyword:`from` with similar effects::
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>>> from fibo import fib as fibonacci
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>>> fibonacci(500)
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0 1 1 2 3 5 8 13 21 34 55 89 144 233 377
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.. note::
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For efficiency reasons, each module is only imported once per interpreter
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