new_contents: """
  Gives all permutations of a string given as user input.
  
  Example:
      Input: Please enter the string: test
      Output:
          t
          e
          te
          s
          ts
          es
          tes
          t
          tt
          et
          tet
          st
          tst
          est
          test
  """
  
  
  def permute(string):
      """Iterable yielding all permutations of a string"""
      length = len(string)
      powers = [2**i for i in range(length)]
  
      for i in range(2**length):
          rval = ""
          for p, st in zip(powers, string):
              if i & p:
                  rval += st
          if rval != "":
              yield rval
  
  
  inp = input("Please enter the string: ")
  
  for s in permute(inp):
      print(s)
  
subject: Add string permutation in python