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33 lines
812 B
Python
33 lines
812 B
Python
"""
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Program to join a list of strings with a given separator
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"""
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def join(separator: str, separated: list[str]) -> str:
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"""
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>>> join("", ["a", "b", "c", "d"])
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'abcd'
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>>> join("#", ["a", "b", "c", "d"])
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'a#b#c#d'
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>>> join("#", "a")
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'a'
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>>> join(" ", ["You", "are", "amazing!"])
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'You are amazing!'
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>>> join("#", ["a", "b", "c", 1])
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Traceback (most recent call last):
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...
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Exception: join() accepts only strings to be joined
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"""
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joined = ""
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for word_or_phrase in separated:
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if not isinstance(word_or_phrase, str):
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raise Exception("join() accepts only strings to be joined")
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joined += word_or_phrase + separator
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return joined.strip(separator)
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if __name__ == "__main__":
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from doctest import testmod
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testmod()
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