old_contents: def sum100(current=2, sequence='1'):
      """Recursive method for finding sequences that sum to 100."""
      if current <= 9:
          sum100(current+1, sequence+str(current))
          if sequence[-1] != u'-' and sequence[-1] != u'+':
              sum100(current, sequence+u'+')
              sum100(current, sequence+u'-')
      else:
          if tot(sequence) == 100:
              print sequence
  
  
  def tot(sequence, total=0):
      """Helper method for finding total of string sequence."""
      total = counter = 0
      temp = ''
      plus_minus = 1      # variable for managing + and -
      while counter < len(sequence):
          try:
              int(sequence[counter])
              temp += sequence[counter]
          except ValueError:
              total += int(temp)*plus_minus
              temp = ''
              if sequence[counter] == u'-':
                  plus_minus = -1
              if sequence[counter] == u'+':
                  plus_minus = 1
          counter += 1
      total += int(temp)*plus_minus
      return total
  
  if __name__ == "__main__":
      sum100()
  
new_contents: def sum100(current=2, sequence='1'):
      """Recursive method for finding sequences that sum to 100."""
      if current <= 9:
          sum100(current+1, sequence+str(current))
          if sequence[-1] != u'-' and sequence[-1] != u'+':
              sum100(current, sequence+u'+')
              sum100(current, sequence+u'-')
      else:
          if tot(sequence) == 100:
              print sequence
  
  
  def tot(sequence, total=0):
      """Helper method: returns total of string sequence."""
      total = counter = 0
      temp = ''
      plus_minus = 1      # variable for managing + and -
      while counter < len(sequence):
          try:
              int(sequence[counter])
              temp += sequence[counter]
          except ValueError:
              total += int(temp)*plus_minus
              temp = ''
              if sequence[counter] == u'-':
                  plus_minus = -1
              if sequence[counter] == u'+':
                  plus_minus = 1
          counter += 1
      total += int(temp)*plus_minus
      return total
  
  if __name__ == "__main__":
      sum100()
  
subject: change docstring.