pip install -U pyobjc
devuelve
Command python setup.py egg_info failed with error code 1 in /private/var/folders/1l/tt74p_z93j9d07418vkyrj6c0000gn/T/pip_build_henry/pyobjc-framework-AddressBook
Storing debug log for failure in /Users/henry/Library/Logs/pip.log
pip.log es aquí (es demasiado largo para pegar aquí).