Python check if list of keys exist in dictionary

Question

I have a dictionary that looks like that:

grades = {
        \'alex\' : 11,
        \'bob\'  : 10,
        \'john\' : 14,
        \'peter\': 7
       }
         


        

Answer 1

>>> grades = {
        'alex' : 11,
        'bob'  : 10,
        'john' : 14,
        'peter': 7
}
>>> names = ('alex', 'john')
>>> set(names).issubset(grades)
True
>>> names = ('ben', 'tom')
>>> set(names).issubset(grades)
False

Calling it class is invalid so I changed it to names.