python not in

1x = 10
2if not x:
3    print("True")
4else:
5    print("False")

1li = [1,2,'a','b']
2if 'hello' not in li:
3    print('hello is not in the list')

1arr = ['a','b','c','d','e','f']
2
3if 'g' not in arr:
4    print('g is not in the list')

1>>> 3 not in [2, 3, 4]
2False
3>>> 3 not in [4, 5, 6]
4True

1result is not None

1today = 'Sunday'
2
3if not today=='Sunday':
4	print('Go to work.')
5else:
6	print('Take rest.')