new_contents: # Given the variable,
  
  days_in_month = [31,28,31,30,31,30,31,31,30,31,30,31]
  
  # define a procedure, how_many_days,
  # that takes as input a number
  # representing a month, and returns
  # the number of days in that month.
  
  def how_many_days(month):
      return days_in_month[month-1]
  
  #print how_many_days(1)
  #>>> 31
  
  #print how_many_days(9)
  #>>> 30
  
subject: Create 01.py