mypy

7c0c1e7a - Use the pytest -q option for tidier ouput with multi-core CPUs (#9845)

Use the pytest -q option for tidier ouput with multi-core CPUs (#9845) Without this option, pytest can print out many lines of garbage if there are more than 8 parallel processes being used. This can result in test output being hard to read, and it also looks bad. Since many new CPUs have 6+ cores, and 16+ cores are not unusual, it's reasonable to use -q by default.