Hi everyone, first I'm not quite sure if this is the right place to make this
kind of suggestion/ask question but, `itertools.cycle` makes a copy of the
iterable its given and as the note says: this may require significant auxiliary
storage. Maybe I don't see the reason why this is nescessary but, shouldn't
this work just as well:
```
def cycle(iterable):
# cycle('ABCD') --> A B C D A B C D A B C D ...
while iterable:
for element in iterable:
yield element
```
Instead of the current:
```
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
```
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