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Make the from_iterable() recipe more usable. 

The code isn't exactly equivalent because a classmethod would
only make sense inside a chain class, and it would need "cls"
as a first argument, and it would need to return an instance
of "chain" rather than a generator.

The updated example drops the @classmethod decorator so that
it can be used standalone:  list(from_iterable(['abc', 'def']))
This should be communicate what from_iterable does.
This commit is contained in:
Raymond Hettinger 2012-12-28 00:03:30 -08:00
parent 3684c79e00
commit c195b4e88c
1 changed files with 1 additions and 2 deletions
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Doc/library/itertools.rst
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@ -106,9 +106,8 @@ loops that truncate the stream.
.. classmethod:: chain.from_iterable(iterable)
Alternate constructor for :func:`chain`. Gets chained inputs from a
single iterable argument that is evaluated lazily. Equivalent to::
single iterable argument that is evaluated lazily. Roughly equivalent to::
@classmethod
def from_iterable(iterables):
# chain.from_iterable(['ABC', 'DEF']) --> A B C D E F
for it in iterables: