Upper Case Function in Python

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Checks if a string is upper case.
Convert the given string to upper case, using str.upper() method and compare it to the original.
def is_upper_case(string):
return string == string.upper()
#input and output:
is_upper_case('ABC') # True
is_upper_case('a3@$') # False
is_upper_case('aB4') # False





