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slice or islice?
Choosing between slice() and islice() is a trade-off between memory usage and iteration speed. slice() is faster, but requires more memory, whereas islice() allocates a constant amount of memory, but is slower.
Use slice() when:
- you need fast iteration speed, and you afford the extra memory usage
Use islice() when:
- you need to slice iterators, or
- memory efficiency is important to you
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MORE IDEAS ON THIS
slice
slice(stop)
slice(start, stop, [step])
- Standard indexing relies on slice(): a[start:stop:step] calls a.__getitem__(slice(start, stop, step)).
- slice() creates a shallow copy of the selected elements fro...
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itertools.islice
islice(iterable, stop)
islice(iterable, start, stop, [step])
- Returns an iterator that produces the selected elements from the iterable. It skips start elements from the iterable, and then produces values until stop is reached, ...
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CURATED FROM
IDEAS CURATED BY
Alt account of @ocp. I use it to stash ideas about software engineering
🐍 Python docs & Stack Overflow
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