code: def strip_prefix(string, prefix):
    
    if string.startswith(prefix):
      return string[len(prefix):]
    else:
      return string
docs: Returns a copy of the string from which the multi-character prefix has been stripped.
  
    Use strip_prefix() instead of lstrip() to remove a substring (instead of individual characters)
    from the beginning of a string, if the substring is present.  lstrip() does not match substrings
    but rather treats a substring argument as a set of characters.
  
    :param str string: The string from which to strip the specified prefix.
    :param str prefix: The substring to strip from the left of string, if present.
    :return: The string with prefix stripped from the left, if present.
    :rtype: string