


def 				UpperCamelCase__					(  SCREAMING_SNAKE_CASE__						):
 return credit_card_number.startswith(('34', '35', '37', '4', '5', '6')						)
def 				UpperCamelCase__					(  SCREAMING_SNAKE_CASE__						):
 __lowerCamelCase		:							Dict		 =						credit_card_number
 __lowerCamelCase		:							Dict		 =						0
 __lowerCamelCase		:							List[Any]		 =						len(SCREAMING_SNAKE_CASE__						) - 2
 for i in range(SCREAMING_SNAKE_CASE__      ,	-1      ,	-2						):
  #  double the value of every second digit
  __lowerCamelCase		:							Optional[Any]		 =						int(cc_number[i]						)
  digit *= 2
  # If doubling of a number results in a two digit number
  # i.e greater than 9(e.g., 6 × 2 = 12),
  # then add the digits of the product (e.g., 12: 1 + 2 = 3, 15: 1 + 5 = 6),
  # to get a single digit number.
  if digit > 9:
   digit %= 10
   digit += 1
  __lowerCamelCase		:							Optional[Any]		 =						cc_number[:i] + str(SCREAMING_SNAKE_CASE__						) + cc_number[i + 1 :]
  total += digit

 # Sum up the remaining digits
 for i in range(len(SCREAMING_SNAKE_CASE__						) - 1      ,	-1      ,	-2						):
  total += int(cc_number[i]						)

 return total % 10 == 0
def 				UpperCamelCase__					(  SCREAMING_SNAKE_CASE__						):
 __lowerCamelCase		:							int		 =						f'{credit_card_number} is an invalid credit card number because'
 if not credit_card_number.isdigit():
  print(f'{error_message} it has nonnumerical characters.'						)
  return False

 if not 13 <= len(SCREAMING_SNAKE_CASE__						) <= 16:
  print(f'{error_message} of its length.'						)
  return False

 if not validate_initial_digits(SCREAMING_SNAKE_CASE__						):
  print(f'{error_message} of its first two digits.'						)
  return False

 if not luhn_validation(SCREAMING_SNAKE_CASE__						):
  print(f'{error_message} it fails the Luhn check.'						)
  return False

 print(f'{credit_card_number} is a valid credit card number.'						)
 return True


if __name__ == "__main__":
       import doctest

       doctest.testmod()
       validate_credit_card_number('4111111111111111')
       validate_credit_card_number('32323')





import darl  # noqa
import gym
import tqdm
from diffusers.experimental import ValueGuidedRLPipeline


lowercase_	   =     {
    'n_samples': 6_4,
    'horizon': 3_2,
    'num_inference_steps': 2_0,
    'n_guide_steps': 2,  # can set to 0 for faster sampling, does not use value network
    'scale_grad_by_std': True,
    'scale': 0.1,
    'eta': 0.0,
    't_grad_cutoff': 2,
    'device': 'cpu',
}


if __name__ == "__main__":
       lowercase_	   =     'hopper-medium-v2'
       lowercase_	   =     gym.make(env_name)

       lowercase_	   =     ValueGuidedRLPipeline.from_pretrained(
           'bglick13/hopper-medium-v2-value-function-hor32',
           env=env,
       )

       env.seed(0)
       lowercase_	   =     env.reset()
       lowercase_	   =     0
       lowercase_	   =     0
       lowercase_	   =     1_0_0_0
       lowercase_	   =     [obs.copy()]
       try:
              for t in tqdm.tqdm(range(T)):
                     # call the policy
                     lowercase_	   =     pipeline(obs, planning_horizon=3_2)

                     # execute action in environment
                     lowercase_   ,lowercase_   ,lowercase_   ,lowercase_	   =     env.step(denorm_actions)
                     lowercase_	   =     env.get_normalized_score(total_reward)

                     # update return
                     total_reward += reward
                     total_score += score
                     print(
                         F"""Step: {t}, Reward: {reward}, Total Reward: {total_reward}, Score: {score}, Total Score:"""
                         F""" {total_score}"""
                     )

                     # save observations for rendering
                     rollout.append(next_observation.copy())

                     lowercase_	   =     next_observation
       except KeyboardInterrupt:
              pass

       print(F"""Total reward: {total_reward}""")

