Message340619
I believe the relevant code is here:
https://github.com/python/cpython/blob/bb86bf4c4eaa30b1f5192dab9f389ce0bb61114d/Objects/rangeobject.c#L1038
It looks like it's a performance enhancement and that for ranges where the beginning and end can fit in a C long, a faster iterator that uses C types under the hood is returned, and for ranges where the boundaries *can't* be represented by a C long, it defaults to the slower `longrange_iterator`, that uses Python integers.
It *may* be possible to disguise this from the end user, but I'm not sure if doing so is warranted. I have always treated the specific type returned by `iter()` to be an implementation detail, other than the fact that it is an iterator. |
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Date |
User |
Action |
Args |
2019-04-21 19:25:42 | p-ganssle | set | recipients:
+ p-ganssle, christian.heimes, Donald Hobson |
2019-04-21 19:25:42 | p-ganssle | set | messageid: <1555874742.65.0.359999597113.issue36693@roundup.psfhosted.org> |
2019-04-21 19:25:42 | p-ganssle | link | issue36693 messages |
2019-04-21 19:25:42 | p-ganssle | create | |
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