Hello I wonder why calling a method on an integer doesn't work ? >>> 123.bit_length() SyntaxError: invalid syntax >>> 123.to_bytes(3, 'big') SyntaxError: invalid syntax but it works with a variable >>> i = 123 >>> i.bit_length() 7 >>> i=123 >>> i.to_bytes(3, 'big') b'\x00\x00{' I am working with pyhton 3.5.1 thx