input: Write a function to generate a list of 50 unique random numbers between 1 and 100.
  assert len(generate_random_numbers())==50
  assert len(set(generate_random_numbers()))==50
  assert all(1 <= num <= 100 for num in generate_random_numbers())
output: import random
  
  def generate_random_numbers():
      return random.sample(range(1, 101), 50)