Testing for many values in a Python list

There will be times that you'd want to test for membership of multiple values in a list.

Of course, we could solve this my writing the equivalent number of loops for every value we are testing. That's a nope.

Fortunately Python provides a much cleaner solution:

>>> all(x in ['b', 'a', 'foo', 'bar'] for x in ['a', 'b'])

Also there are other options:

>>> set(['a', 'b']).issubset(set(['a', 'b', 'foo', 'bar']))
True
>>> {'a', 'b'} <= {'a', 'b', 'foo', 'bar'}
True

Reference:

https://stackoverflow.com/questions/6159313/can-python-test-the-membership-of-multiple-values-in-a-list