mypy

Explicitly import `urllib.error` in `urllib.robotparser` (#128737) #11536

Job	Run time
Run mypy on Lib/_pyrepl	27s
Run mypy on Lib/test/libregrtest	24s
Run mypy on Tools/build	23s
Run mypy on Tools/cases_generator	22s
Run mypy on Tools/clinic	23s
Run mypy on Tools/jit	25s
Run mypy on Tools/peg_generator	29s
Run mypy on Tools/wasm	24s
	3m 17s

Provide feedback