iframe-proxy | Sunbelt Computer Software

32 lines (27 loc) · 812 Bytes

"""

Program to join a list of strings with a given separator

"""

def join(separator: str, separated: list[str]) -> str:

"""

>>> join("", ["a", "b", "c", "d"])

'abcd'

>>> join("#", ["a", "b", "c", "d"])

'a#b#c#d'

>>> join("#", "a")

'a'

>>> join(" ", ["You", "are", "amazing!"])

'You are amazing!'

>>> join("#", ["a", "b", "c", 1])

Traceback (most recent call last):

...

Exception: join() accepts only strings to be joined

"""

joined = ""

for word_or_phrase in separated:

if not isinstance(word_or_phrase, str):

raise Exception("join() accepts only strings to be joined")

joined += word_or_phrase + separator

return joined.strip(separator)

if __name__ == "__main__":

from doctest import testmod

testmod()

Sunbelt Computer Software