(c)
return b'0' <= c <= b'9' or b'a' <= c <= b'f' or b'A' <= c <= b'F'
Return true if the byte ordinal 'c' is a hexadecimal digit in ASCII.
Return true if the byte ordinal 'c' is a hexadecimal digit in ASCII.
Return true if the byte ordinal c is a hexadecimal digit in ASCII .
def ishex(c):
    """Return true if the byte ordinal 'c' is a hexadecimal digit in ASCII."""
    assert isinstance(c, bytes)
    return b'0' <= c <= b'9' or b'a' <= c <= b'f' or b'A' <= c <= b'F'
def ishex ( c ) : assert isinstance ( c , bytes ) return b'0' <= c <= b'9' or b'a' <= c <= b'f' or b'A' <= c <= b'F'