input: 
  import string
  import random
  
  def generate_random_string(length: int) -> str:
      """
      Generate a random string of the given length using uppercase letters and digits.
      >>> generate_random_string(8)
      'A1B2C3D4'  # Example output, actual result will vary due to randomness
      """
      chars = string.ascii_uppercase + string.digits
      password = ''.join(random.choice(chars) for _ in range(length))
      return password
  
output:     chars = string.ascii_uppercase + string.digits
      password = ''.join(random.choice(chars) for _ in range(length))
      return password