When using binascii.a2b_hex (or binascii.unhexlify) and the argument is invalid, the doc states that it should raise a TypeError for invalid arguments (e.g. passing an odd-length string).

However, it does raise binascii.Error instead of TypeError:

try:
    binascii.a2b_hex('a')
except Exception as exc:
    print(type(exc))

What surprised me even more was that it raises ValueError (although binascii.Error inherits ValueError) in case a unicode string has been passed as an argument:

try:
    binascii.a2b_hex('ä')
except binascii.Error:
    print('binascii.Error')
except ValueError:
    print('ValueError')