mypy

gh-145269: simplify bisect.bisect doc example (#145270) #19720

Job	Run time
Run mypy on Tools/peg_generator	18s
Run mypy on Lib/_pyrepl	15s
Run mypy on Lib/test/libregrtest	22s
Run mypy on Lib/tomllib	17s
Run mypy on Tools/check-c-api-docs	17s
Run mypy on Tools/clinic	23s
Run mypy on Tools/build	22s
Run mypy on Tools/cases_generator	22s
Run mypy on Tools/jit	22s
	2m 58s

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