Python extension

style: fix some warnings due to lifetime elisions #502

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Run time

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Job	Run time
test (3.8, ubuntu-latest)	2m 15s
test (3.8, macos-latest)	3m 15s
test (3.8, windows-latest)	6m 21s
test (3.9, ubuntu-latest)	2m 19s
test (3.9, macos-latest)	1m 48s
test (3.9, windows-latest)	4m 53s
test (3.10, ubuntu-latest)	2m 32s
test (3.10, macos-latest)	2m 1s
test (3.10, windows-latest)	4m 48s
test (3.11, ubuntu-latest)	2m 21s
test (3.11, macos-latest)	2m 25s
test (3.11, windows-latest)	6m 38s
test (3.12, ubuntu-latest)	2m 20s
test (3.12, macos-latest)	2m 40s
test (3.12, windows-latest)	5m 39s
	52m 15s