input: 
  import string
  import random
  
  def generate_password():
      """Generates a random password that consists of 8 characters.
      The password can include lowercase letters, uppercase letters, and digits.
      >>> generate_password()
      'aB3dF7Gh'
      >>> generate_password()
      '2Xz9QwR8'
      """
      chars = string.ascii_letters + string.digits
      return ''.join(random.choice(chars) for _ in range(8))
  
  password = generate_password()
  print(password)
  
output:     chars = string.ascii_letters + string.digits
      return ''.join(random.choice(chars) for _ in range(8))