Use cpow=True in Python
#1502
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Use cpow=True in Python
#1502
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Avoids that x**y becomes a float for two integers, leading to compilation errors cpow=True has been the default in Cython, but it changed to cpow=False with Cython 3.0 Fixes #1500
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Avoids that
x**ybecomes a float for two integers, leading to compilation errors. This behaviour changed with Cython 3.0. While I think there's a point for havingx**yonly being an integer if the compiler knows thatyis non-negative, in practice I don't think there is much use of this kind of exponentiation outside of expressions such as(-1)**k. Whatever we'd decide for this in the long run, right now this fix assures that there is no difference depending on your version of Cython.Fixes #1500