code: def add_jars(jars):
      
  
      #if the parameter is a string, convert to a single element list
      if isinstance(jars,str):
          jars = [jars]
  
      _add_to_submit_args("--jars "+ ",".join(jars)  +" pyspark-shell")
docs: Add external jars to the pyspark interpreter.
  
      Set the PYSPARK_SUBMIT_ARGS properly.
  
      Parameters
      ----------
      jars: list of path to jars in string format