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

Assuming students as set

if not (students - grades.keys()):
    print("All keys exist")

If not convert it to set

if not (set(students) - grades.keys()):
    print("All keys exist")