floaty-zero-slices.py
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| importbuiltins | |
| importmath | |
| classBetterList(builtins.list): | |
| def__getitem__(self, k): | |
| ifisinstance(k, slice): | |
| ifk.start==Noneandk.step==None: | |
| ifk.stop==0.0: | |
| ifmath.copysign(1.0, k.stop) ==-1.0: | |
| returnself | |
| else: | |
| returnsuper().__getitem__(slice(None, 0, None)) | |
| returnsuper().__getitem__(k) | |
| builtins.list=BetterList | |
| fruit=list('🍎🍌🍒') | |
| print(fruit[:0.0]) # [] | |
| print(fruit[:-0.0]) # ['🍎', '🍌', '🍒'] |