input: def print_fibonacci_series(up_to):
      """ Print the Fibonacci series up to the given number.
      >>> print_fibonacci_series(10)
      0 1 1 2 3 5 8
      >>> print_fibonacci_series(-5)
      Incorrect input
      >>> print_fibonacci_series(0)
      0
      >>> print_fibonacci_series(1)
      0 1
      """
      a, b = 0, 1
      if up_to < 0:
          print("Incorrect input")
          return
      while a <= up_to:
          print(a, end=" ")
          a, b = b, a + b
      print()
output:     a, b = 0, 1
      if up_to < 0:
          print("Incorrect input")
          return
      while a <= up_to:
          print(a, end=" ")
          a, b = b, a + b
      print()