input: Write a function to generate a random 6-digit number in Python.
  
  import random
  
  def generate_random_number():
      number = random.randint(100000, 999999)
      return number
  
  assert generate_random_number() >= 100000
  assert generate_random_number() <= 999999
output: import random
  
  def generate_random_number():
      number = random.randint(100000, 999999)
      return number