gistfile1.txt

>>> for s in ('C-c', 'C-s', 'C-r'):
...     print(s)
...     msvcrt.getch()
...
C-c
b'\x03'
C-s
b'\x13'
C-r
b'\x12'

gistfile2.pytb

>>> boc = lambda x: bytes([ord(chr(x))])
>>> ctr = dict(zip(('C-c', 'C-r', 'C-s'), list(map(boc, (3, 18, 19)))))
>>> ctr
{'C-c': b'\x03', 'C-s': b'\x13', 'C-r': b'\x12'}