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behaviour of the modulo operator #129297
Description
Feature or enhancement
Proposal:
The behaviour of the modulo operator should be made consistent across Python and C/C++.
3%2 # this is 1
-3%2 # this can be represented as -1 or 1 depending of the divisor.
# -3%2 is -1 in C/C++.Has this already been discussed elsewhere?
I don't think so.
Activity
sobolevn commentedon Jan 25, 2025
Looks like a duplicate of #75204
ronaldoussoren commentedon Jan 25, 2025
The behaviour of the operator is intentional, see the answers in this stack overflow question for a good explanation of the rationale for this choice.
terryjreedy commentedon Jan 26, 2025
Issue #75204 is not really a duplicate; it is an open proposal to revise the int division programming FAQ, which involves the choice of modulus sign determination. I just opened PR #129313 for it. It needs coredev review.