Question: 
Write a python function to convert the given string to upper case.


Model's Code:
def is_upper(s):
    return s.upper()



Sample Correct Code:
def is_upper(string):
  return (string.upper())


Asserts:
assert is_upper("person") =="PERSON"
assert is_upper("final") == "FINAL"
assert is_upper("Valid") == "VALID"


Tests:
Test 1 of 3: PASS
Test 2 of 3: PASS
Test 3 of 3: PASS

Test 624 of 974: 464/624 (74.35897435897436%): success