2. Chained comparison operators

Some chained comparisons, like the one below, should be avoided. Notice the use of and?

2.1. Don’t do this

1x = 10
2y = 15
3z = 20
4
5if x <= y and y <= z:
6    print('hi')

2.2. Do this

1if x <= y <= z:
2    print('hi')