input: Write a function to print the first n Fibonacci numbers.
  assert printFibonacci(5) == [0, 1, 1, 2, 3]
  assert printFibonacci(7) == [0, 1, 1, 2, 3, 5, 8]
  assert printFibonacci(0) == [0]
output: def printFibonacci(n):
      if n <= 0:
          return [0]
      fibonacci_numbers = [0, 1]
      for i in range(2, n):
          next_number = fibonacci_numbers[-1] + fibonacci_numbers[-2]
          fibonacci_numbers.append(next_number)
      return fibonacci_numbers[:n]