docstr: :return string: Return string representation of time series
docstr_tok: [":","return","string",":","Return","string","representation","of","time","series"]
code: def __str__(self):
      """
      :return string: Return string representation of time series
      """
      string_rep = ""
      for item in self.iteritems():
          string_rep += str(item)
      return string_rep
  
imports: import numpy
label_desc: Use image node_id 6 for calling the TimeSeries obj's underlying member method code with example usage: obj.__str__() and returns: string_rep