Zfill Method Parameter Confusion

[Gribouillis]

16 is a second argument to int(). It is assumed that the string contains hexadecimal characters and it is converted to int in base 16. For example

>>> int("000002A3", 16)
675
>>> chr(int("000002A3", 16))
'ʣ'
>>> '\N{LATIN SMALL LETTER DZ DIGRAPH}'
'ʣ'

for the character 'LATIN SMALL LETTER DZ DIGRAPH'