def is_all_upper(text: str) -> bool:
return text == text.upper()
if name == 'main':
print("Example:")
print(is_all_upper('ALL UPPER'))
# These "asserts" are used for self-checking and not for an auto-testing
assert is_all_upper('ALL UPPER') == True
assert is_all_upper('all lower') == False
assert is_all_upper('mixed UPPER and lower') == False
assert is_all_upper('') == True
assert is_all_upper(' ') == True
assert is_all_upper('444') == True
assert is_all_upper('55 55 5') == True
print("Coding complete? Click 'Check' to earn cool rewards!")