input: Write a function to generate the Fibonacci series up to n numbers where n is an input parameter. The function should return a list of the Fibonacci numbers.
  assert fibonacci_series(10)==[0, 1, 1, 2, 3, 5, 8, 13, 21, 34]
  assert fibonacci_series(5)==[0, 1, 1, 2, 3]
  assert fibonacci_series(0)==[]
  assert fibonacci_series(1)==[0]
  assert fibonacci_series(2)==[0, 1]
output: def fibonacci_series(n):
      if n == 0:
          return []
      elif n == 1:
          return [0]
      elif n == 2:
          return [0, 1]
      
      fib_list = [0, 1]
      for i in range(2, n):
          fib_list.append(fib_list[-1] + fib_list[-2])
      
      return fib_list