2023-01-10 10:45:45 +00:00
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def onlyCaps(s):
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# NOTE: ch.isupper() -> True if ch is uppercase.
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2023-01-18 19:02:26 +00:00
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return (s if len(s) == 0 or (len(s) == 1 and s.isupper()) else "") if len(s) <= 1 else (s[0] + onlyCaps(s[1:]) if s[0].isupper() else onlyCaps(s[1:]))
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2023-01-10 10:45:45 +00:00
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