Use `cpow=True` in Python #838

Job	Run time
Run linters with pre-commit	1m 7s
Determine Python versions	3s
Test building the documentation	1m 38s
Python 3.12 on ubuntu-22.04 (standalone: false, 32bit: false)	23m 47s
Python 3.12 on ubuntu-22.04 (standalone: false, 32bit: true)	21m 5s
Python 3.12 on ubuntu-22.04 (standalone: true, 32bit: false)	22m 25s
Python 3.12 on ubuntu-22.04 (standalone: true, 32bit: true)	20m 47s
Python 3.12 on windows-2022 (standalone: false, 32bit: false)	47m 33s
Python 3.12 on windows-2022 (standalone: false, 32bit: true)	47m 31s
Python 3.12 on windows-2022 (standalone: true, 32bit: false)	27m 19s
Python 3.12 on windows-2022 (standalone: true, 32bit: true)	26m 53s
Python 3.12 on macOS-12 (standalone: false, 32bit: false)	38m 54s
Python 3.12 on macOS-12 (standalone: false, 32bit: true)	31m 31s
Python 3.12 on macOS-12 (standalone: true, 32bit: false)	23m 8s
Python 3.12 on macOS-12 (standalone: true, 32bit: true)	17m 58s
Python 3.12 on macOS-14 (standalone: false, 32bit: false)	36m 32s
Python 3.12 on macOS-14 (standalone: false, 32bit: true)	36m 19s
Python 3.12 on macOS-14 (standalone: true, 32bit: false)	48m 17s
Python 3.12 on macOS-14 (standalone: true, 32bit: true)	42m 8s
Python 3.9 on ubuntu-22.04 (standalone: false, 32bit: false)	18m 29s
Python 3.9 on ubuntu-22.04 (standalone: true, 32bit: false)	18m 52s
Indicate completion to coveralls.io	15s
	9h 12m 31s

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