new_contents: import os
  
  
  def lambda_handler(event, context):
      what_to_print = os.environ.get("what_to_print")
      how_many_times = int(os.environ.get("how_many_times"))
  
      # make sure what_to_print and how_many_times values exist
      if what_to_print and how_many_times > 0:
          for i in range(0, how_many_times):
              # formatted string literals are new in Python 3.6
              print(f"what_to_print: {what_to_print}.")
          return what_to_print
      return None
  
subject: add lambda python 3.6 example