In the docs for itertools.cycle() there is a bit of equivalent code given:
def cycle(iterable):
# cycle('ABCD') --> A B C D A B C D A B C D ...
saved = []
for element in iterable:
yield element
saved.append(element)
while saved:
for element in saved:
yield element
Is that really how it works? Why make
the copy of the elements? This seems
to be equivalent:
def cycle(iterable):
while iterable:
for thing in iterable:
yield thing
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