Mark Dickinson <[email protected]> added the comment:
Related:
`randrange(0)` raises an exception
`choice([])` raises an exception
Those are very different from `getrandbits(0)`: in both cases there's no
reasonable value that can be returned: for the first case, there's no integer
`x` with `0 <= x < 0`; for the second, there's no element of `[]`, period. In
contrast, there's an obvious, valid, return value for `getrandbits(0)`.
The `getrandbits(0)` example is much more similar to `randrange(1)` (in fact,
it's pretty much the same thing: apart from `n = 0`, `getrandbits(n)` is
equivalent at some level to `randrange(2**n)`.
So if `getrandbits(0)` should be an exception on the basis of not having any
randomness in the result, then `randrange(1)` should be an exception on the
same basis, as should `random.uniform(2.0, 2.0)`, etc.
So to me, it makes no sense at all that `getrandbits(0)` raises: I can't see
any good reason for it to do so.
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<https://bugs.python.org/issue37000>
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