new_contents: import sys
  
  def fibonacci(n):
      if n == 0:
          return 0
      elif n == 1:
          return 1
      else:
          return fibonacci(n-1) + fibonacci(n-2)
  
  input_file = sys.argv[1]
  with open(input_file, 'r') as test_cases:
      for case in test_cases:
          number = int(case.rstrip())
          print(fibonacci(number))
  sys.exit(0)
  
subject: Solve the Fibonacci Series challenge