Python/strings/strip.py at master · TheAlgorithms/Python

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Python/strings/strip.py at master · TheAlgorithms/Python · GitHub

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def strip(user_string: str, characters: str = " \t\n\r") -> str:

"""

Remove leading and trailing characters (whitespace by default) from a string.

Args:

user_string (str): The input string to be stripped.

characters (str, optional): Optional characters to be removed

(default is whitespace).

Returns:

str: The stripped string.

Examples:

>>> strip(" hello ")

'hello'

>>> strip("...world...", ".")

'world'

>>> strip("123hello123", "123")

'hello'

>>> strip("")

"""

start = 0

end = len(user_string)

while start < end and user_string[start] in characters:

start += 1

while end > start and user_string[end - 1] in characters:

end -= 1

return user_string[start:end]

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