[Python-ideas] Add _KB, _MB, _GB to numeric literals

PEP 515 added underscore to numeric literals, it brings better readability. PEP 515 -- Underscores in Numeric Literals https://www.python.org/dev/peps/pep-0515/ Is it possible to add _KB, _MB, _GB to numeric literals, for example: 200_KB (200*1024) 150_MB (150*1024*1024) 2_GB (2*1024*1024*1024) Do you think it's a good code style?