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First solution in Clear category for All Upper II by m.kleinkranenbarg
# Taken from mission All Upper I
def is_all_upper(text: str) -> bool:
letters = ''.join(c for c in text if c.isalpha())
return bool(letters) and letters.upper() == letters
print("Example:")
print(is_all_upper("ALL UPPER"))
# These "asserts" are used for self-checking
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("") == False
print("The mission is done! Click 'Check Solution' to earn rewards!")
Feb. 26, 2023