python 3c 3c 3e 3e

1#PYTHON BITWISE OPERATORS
2OPERATOR	DESCRIPTION	        SYNTAX  FUNCTION        IN-PLACE METHOD
3&	        Bitwise AND	        a & b   and_(a, b)      __and__(self, other)
4|	        Bitwise OR	        a | b   or_(a,b)        __or__(self, other)
5^	        Bitwise XOR	        a ^ b   xor(a, b)       __xor__(self, other)
6~           Bitwise NOT         ~ a     invert(a)       __invert__(self)
7>>          Bitwise R shift     a >> b  rshift(a, b)    __irshift__(self, other)
8<<          Bitwise L shift     a << b  lshift(a, b)    __lshift__(self, other)

1a = 1
2b = 2
3
4if a != b:
5 print("Dunno")
6
7if a <> b:
8 print("Dunno")
9
10
11above mentioned code are same As described in the documentation, 
12they are the same. <> is deprecated and was removed in Python 3, 
13so you should use !=
14
15https://docs.python.org/2/reference/expressions.html#not-in