Python odd-even using bitwise operation

odd-or-even

The classic code:
```
def odd_even(n):
	if n % 2 == 0: 
		print('even')
	else: 
		print('odd')
		
odd_even(13)
-> 'odd'
```

Using `&` bitwise operation:
```
def odd_even(n):
	if n & 1:
		print('odd')
	else:
		print('even')
		
odd_even(13)
-> 'odd'
```