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by hauntsaninja
2006 days ago
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Python's static type system can express what you describe using TypeVars or overloads. The issue is that `int pow(int, int)` is fundamentally incorrect. If the exponent is a negative integer, the return type would need to be float. As evidenced by your comment, most people forget about negative exponents. The vast majority of usage is positive exponents; people expect an int back when they do `pow(2, 2)` and returning a Union or float would result in annoying false positives. |
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