mypy

gh-143774 - Improve IDLE Format Paragraph doc (#143775) #19180

Job	Run time
Run mypy on Lib/tomllib	16s
Run mypy on Lib/test/libregrtest	19s
Run mypy on Tools/check-c-api-docs	18s
Run mypy on Tools/peg_generator	18s
Run mypy on Tools/build	21s
Run mypy on Tools/clinic	19s
Run mypy on Lib/_pyrepl	17s
Run mypy on Tools/cases_generator	18s
Run mypy on Tools/jit	18s
	2m 44s

Provide feedback