TheAlgorithms-Python/strings/join.py
Rohan R Bharadwaj fa88559cab
Create join.py (#5363)
* Create join.py

Because we have a split.py

* Update join.py

* Update join.py

* Update join.py

* Update join.py

* Update join.py

* Update strings/join.py

Co-authored-by: John Law <johnlaw.po@gmail.com>

* Update join.py

* Update join.py

* Update join.py

* Update join.py

Co-authored-by: John Law <johnlaw.po@gmail.com>
2021-10-18 21:35:35 +08:00

33 lines
809 B
Python

"""
Program to join a list of strings with a given separator
"""
def join(separator: str, separated: list) -> 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()