new_contents: # PROBLEM 1: ENCRYPTION (APPLYCODER)
  
  def applyCoder(text, coder):
      """
      Applies the coder to the text. Returns the encoded text.
  
      text: string
      coder: dict with mappings of characters to shifted characters
      returns: text after mapping coder chars to original text
      """
      ### TODO
      a1 = ''
      for x in text:
          if x in coder.keys():
            a1 = a1 + coder[x]
          else:
              a1 = a1 + x
      return a1
  
subject: Create pset5-P1-ApplyCoder.py