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simple counter based solution solution in Clear category for Correct Capital by Molot
def correct_capital(line: str) -> bool:
uc, lc = 0, 0
for c in line:
if c.isupper():
uc += 1
else:
lc += 1
return (uc == 0) or (lc == 0) or (uc == 1 and line == line.title())
print("Example:")
print(correct_capital("Checkio"))
# These "asserts" are used for self-checking
assert correct_capital("Checkio") == True
assert correct_capital("CheCkio") == False
assert correct_capital("CHECKIO") == True
print("The mission is done! Click 'Check Solution' to earn rewards!")
Dec. 6, 2022