old_contents: # Regex Version of strip() - this program acts like the strip() method but using regex
  #
  # Write a function that takes a string and does the same thing as the strip() string
  # method. If no other arguments are passed other than the string to strip, then
  # whitespace characters will be removed from the beginning and end of the string.
  # Otherwise, the characters specified in the second argument to the function will be
  # removed from the string.
  import re
  
  
  def regex_strip(text, replace=""):
      if replace == "":
          whitespace_regex = re.compile(r"^\s+(\w+)\s+$")  # group characters between whitespace
          match = whitespace_regex.search(text)
          return match.group(1)
      else:
          sub_regex = re.compile(replace)  # match replacement text
          return sub_regex.sub("", text)
  
  
  message = "    something     "
  print(regex_strip(message))
  print(regex_strip(message, "some"))
  message = "Supercalifragilisticexpialidocious"
  print(regex_strip(message, "cali"))
  
new_contents: """Regex version of strip()
  
  This program acts like :meth:`str.strip` but using :py:mod:`re`.
  
  Write a function, :meth:`regex_strip`, that takes a string and does the same thing
  as the strip() string method.
  
  If no other arguments are passed other than the string to strip, then
  whitespace characters will be removed from the beginning and end of the string.
  Otherwise, the characters specified in the second argument to the function will be
  removed from the string.
  
  """
  
  import re
  
  
  def regex_strip(text: str, replace: str = "") -> str:
      """Regex strip
  
      Implements the :meth:`str.strip` method using :py:mod:`re` by removing the given
      replace string in the given text.
  
      Args:
          text: String with text to remove given replace string from.
          replace: String to remove from given text. Defaults to empty string.
  
      Returns:
          String with replace string removed from text string.
      """
      if replace == "":
          whitespace_regex = re.compile(r"^\s+(\w+)\s+$")  #: Group characters between whitespace
          match = whitespace_regex.search(text)
          return match.group(1)
      else:
          sub_regex = re.compile(replace)  #: Match replacement text
          return sub_regex.sub("", text)
  
  
  def main():
      message = "    something     "
      print(regex_strip(message))
      print(regex_strip(message, "some"))
      message = "Supercalifragilisticexpialidocious"
      print(regex_strip(message, "cali"))
  
  
  if __name__ == '__main__':
      main()
  
subject: Update P2_regexStrip.py added docstrings and wrapped in main() function