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Added test cases to join.py (#10629)

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* Added test cases to join.py

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Saurabh Mahapatra 2023-10-17 12:06:12 +05:30 committed by GitHub
parent b5786c87d8
commit 00165a5fb2
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1 changed files with 25 additions and 3 deletions
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28
strings/join.py
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@ -1,10 +1,21 @@
""" """
Program to join a list of strings with a given separator Program to join a list of strings with a separator
""" """
def join(separator: str, separated: list[str]) -> str: def join(separator: str, separated: list[str]) -> str:
""" """
Joins a list of strings using a separator
and returns the result.
:param separator: Separator to be used
for joining the strings.
:param separated: List of strings to be joined.
:return: Joined string with the specified separator.
Examples:
>>> join("", ["a", "b", "c", "d"]) >>> join("", ["a", "b", "c", "d"])
'abcd' 'abcd'
>>> join("#", ["a", "b", "c", "d"]) >>> join("#", ["a", "b", "c", "d"])
@ -13,16 +24,27 @@ def join(separator: str, separated: list[str]) -> str:
'a' 'a'
>>> join(" ", ["You", "are", "amazing!"]) >>> join(" ", ["You", "are", "amazing!"])
'You are amazing!' 'You are amazing!'
This example should raise an
exception for non-string elements:
>>> join("#", ["a", "b", "c", 1]) >>> join("#", ["a", "b", "c", 1])
Traceback (most recent call last): Traceback (most recent call last):
... ...
Exception: join() accepts only strings to be joined Exception: join() accepts only strings
Additional test case with a different separator:
>>> join("-", ["apple", "banana", "cherry"])
'apple-banana-cherry'
""" """
joined = "" joined = ""
for word_or_phrase in separated: for word_or_phrase in separated:
if not isinstance(word_or_phrase, str): if not isinstance(word_or_phrase, str):
raise Exception("join() accepts only strings to be joined") raise Exception("join() accepts only strings")
joined += word_or_phrase + separator joined += word_or_phrase + separator
# Remove the trailing separator
# by stripping it from the result
return joined.strip(separator) return joined.strip(separator)