input: def fibonacci_seq(n: int) -> int: 
      """ This function generates the nth Fibonacci number.
      The Fibonacci sequence is a series of numbers where a number is the sum of the two preceding ones, usually starting with 0 and 1.
      >>> fibonacci_seq(0)
      0
      >>> fibonacci_seq(1)
      1
      >>> fibonacci_seq(6)
      8
      """
      if n == 0: 
          return 0
      elif n == 1: 
          return 1
      else: 
          return fibonacci_seq(n - 1) + fibonacci_seq(n - 2)
output:     if n == 0: 
          return 0
      elif n == 1: 
          return 1
      else: 
          return fibonacci_seq(n - 1) + fibonacci_seq(n - 2)