
'''simple docstring'''




def 		lowerCAmelCase_				(   snake_case__						):




    '''simple docstring'''



    return credit_card_number.startswith(('''34''', '''35''', '''37''', '''4''', '''5''', '''6''')						)







def 		lowerCAmelCase_				(   snake_case__						):




    '''simple docstring'''



    A       :   Union[str, Any]					=						credit_card_number
    A       :   Optional[Any]					=						0
    A       :   Tuple					=						len(snake_case__						) - 2
    for i in range(snake_case__		,				-1		,				-2						):
        #  double the value of every second digit
        A       :   Dict					=						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
        A       :   Union[str, Any]					=						cc_number[:i] + str(snake_case__						) + cc_number[i + 1 :]
        total += digit

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

    return total % 10 == 0







def 		lowerCAmelCase_				(   snake_case__						):




    '''simple docstring'''



    A       :   Optional[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(snake_case__						) <= 16:
        print(F'{error_message} of its length.'						)
        return False

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

    if not luhn_validation(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')






'''simple docstring'''




from typing import List, Optional, Union

import numpy as np
import torch
import torchaudio.compliance.kaldi as ta_kaldi

from ...feature_extraction_sequence_utils import SequenceFeatureExtractor
from ...feature_extraction_utils import BatchFeature
from ...utils import PaddingStrategy, TensorType, logging


lowercase			:				Optional[int]    		=			logging.get_logger(__name__)





class  A				(							__snake_case						):
     __magic_name__						=		['''input_features''', '''attention_mask''']





     def __init__(							self						,			SCREAMING_SNAKE_CASE=80						,			SCREAMING_SNAKE_CASE=16000						,			SCREAMING_SNAKE_CASE=80						,			SCREAMING_SNAKE_CASE=0.0						,			SCREAMING_SNAKE_CASE=True						,			SCREAMING_SNAKE_CASE=True						,			SCREAMING_SNAKE_CASE=True						,			**SCREAMING_SNAKE_CASE						,			) ->				int:






         """simple docstring"""






         super().__init__(feature_size=SCREAMING_SNAKE_CASE						,			sampling_rate=SCREAMING_SNAKE_CASE						,			padding_value=SCREAMING_SNAKE_CASE						,			**SCREAMING_SNAKE_CASE	)
         A       :   Optional[int]					=						num_mel_bins
         A       :   Tuple					=						do_ceptral_normalize
         A       :   Dict					=						normalize_means
         A       :   List[Any]					=						normalize_vars
         A       :   List[str]					=						True





     def 				__lowerCAmelCase							(							self						,			SCREAMING_SNAKE_CASE						,			) ->				np.ndarray:






         """simple docstring"""






         A       :   List[Any]					=						waveform * (2**15)  # Kaldi compliance: 16-bit signed integers
         A       :   Any					=						torch.from_numpy(SCREAMING_SNAKE_CASE	).unsqueeze(0	)
         A       :   Any					=						ta_kaldi.fbank(SCREAMING_SNAKE_CASE						,			num_mel_bins=self.num_mel_bins						,			sample_frequency=self.sampling_rate	)
         return features.numpy()





     @staticmethod
     def 				__lowerCAmelCase							(							SCREAMING_SNAKE_CASE						,			SCREAMING_SNAKE_CASE						,			SCREAMING_SNAKE_CASE = True						,			SCREAMING_SNAKE_CASE = True						,			SCREAMING_SNAKE_CASE = 0.0						,			) ->				np.ndarray:






         """simple docstring"""






         if normalize_means:
             A       :   Dict					=						x[:input_length].mean(axis=0	)
             A       :   Optional[Any]					=						np.subtract(SCREAMING_SNAKE_CASE						,			SCREAMING_SNAKE_CASE	)
         if normalize_vars:
             A       :   str					=						x[:input_length].std(axis=0	)
             A       :   int					=						np.divide(SCREAMING_SNAKE_CASE						,			SCREAMING_SNAKE_CASE	)

         if input_length < x.shape[0]:
             A       :   List[str]					=						padding_value

         # make sure array is in float32
         A       :   Tuple					=						x.astype(np.floataa	)

         return x





     def 				__lowerCAmelCase							(							self						,			SCREAMING_SNAKE_CASE						,			SCREAMING_SNAKE_CASE = None	) ->				List[np.ndarray]:






         """simple docstring"""






         A       :   List[Any]					=						attention_mask.sum(-1	) if attention_mask is not None else [x.shape[0] for x in input_features]
         return [
             self.utterance_cmvn(SCREAMING_SNAKE_CASE						,			SCREAMING_SNAKE_CASE						,			self.normalize_means						,			self.normalize_vars						,			self.padding_value	)
             for x, n in zip(SCREAMING_SNAKE_CASE						,			SCREAMING_SNAKE_CASE	)
         ]





     def __call__(							self						,			SCREAMING_SNAKE_CASE						,			SCREAMING_SNAKE_CASE = False						,			SCREAMING_SNAKE_CASE = None						,			SCREAMING_SNAKE_CASE = False						,			SCREAMING_SNAKE_CASE = None						,			SCREAMING_SNAKE_CASE = None						,			SCREAMING_SNAKE_CASE = None						,			SCREAMING_SNAKE_CASE = None						,			**SCREAMING_SNAKE_CASE						,			) ->				BatchFeature:






         """simple docstring"""






         if sampling_rate is not None:
             if sampling_rate != self.sampling_rate:
                 raise ValueError(
                     F'The model corresponding to this feature extractor: {self} was trained using a sampling rate of'
                     F' {self.sampling_rate}. Please make sure that the provided `raw_speech` input was sampled with'
                     F' {self.sampling_rate} and not {sampling_rate}.'	)
         else:
             logger.warning(
                 '''It is strongly recommended to pass the `sampling_rate` argument to this function. '''
                 '''Failing to do so can result in silent errors that might be hard to debug.'''	)

         A       :   List[Any]					=						isinstance(SCREAMING_SNAKE_CASE						,			np.ndarray	) and len(raw_speech.shape	) > 1
         if is_batched_numpy and len(raw_speech.shape	) > 2:
             raise ValueError(F'Only mono-channel audio is supported for input to {self}'	)
         A       :   Tuple					=						is_batched_numpy or (
             isinstance(SCREAMING_SNAKE_CASE						,			(list, tuple)	) and (isinstance(raw_speech[0]						,			(np.ndarray, tuple, list)	))
         )

         if is_batched:
             A       :   Union[str, Any]					=						[np.asarray(SCREAMING_SNAKE_CASE						,			dtype=np.floataa	) for speech in raw_speech]
         elif not is_batched and not isinstance(SCREAMING_SNAKE_CASE						,			np.ndarray	):
             A       :   Union[str, Any]					=						np.asarray(SCREAMING_SNAKE_CASE						,			dtype=np.floataa	)
         elif isinstance(SCREAMING_SNAKE_CASE						,			np.ndarray	) and raw_speech.dtype is np.dtype(np.floataa	):
             A       :   Optional[int]					=						raw_speech.astype(np.floataa	)

         # always return batch
         if not is_batched:
             A       :   Any					=						[raw_speech]

         # extract fbank features
         A       :   List[str]					=						[self._extract_fbank_features(SCREAMING_SNAKE_CASE	) for waveform in raw_speech]

         # convert into correct format for padding
         A       :   str					=						BatchFeature({'''input_features''': features}	)

         A       :   Union[str, Any]					=						self.pad(
             SCREAMING_SNAKE_CASE						,			padding=SCREAMING_SNAKE_CASE						,			max_length=SCREAMING_SNAKE_CASE						,			truncation=SCREAMING_SNAKE_CASE						,			pad_to_multiple_of=SCREAMING_SNAKE_CASE						,			return_attention_mask=SCREAMING_SNAKE_CASE						,			**SCREAMING_SNAKE_CASE						,			)

         # make sure list is in array format
         A       :   List[str]					=						padded_inputs.get('''input_features'''	)
         if isinstance(input_features[0]						,			SCREAMING_SNAKE_CASE	):
             A       :   str					=						[np.asarray(SCREAMING_SNAKE_CASE						,			dtype=np.floataa	) for feature in input_features]

         A       :   Union[str, Any]					=						padded_inputs.get('''attention_mask'''	)
         if attention_mask is not None:
             A       :   Union[str, Any]					=						[np.asarray(SCREAMING_SNAKE_CASE						,			dtype=np.intaa	) for array in attention_mask]

         # Utterance-level cepstral mean and variance normalization
         if self.do_ceptral_normalize:
             A       :   Dict					=						(
                 np.array(SCREAMING_SNAKE_CASE						,			dtype=np.intaa	)
                 if self._get_padding_strategies(SCREAMING_SNAKE_CASE						,			max_length=SCREAMING_SNAKE_CASE	) is not PaddingStrategy.DO_NOT_PAD
                 else None
             )
             A       :   List[Any]					=						self.normalize(
                 padded_inputs['''input_features''']						,			attention_mask=SCREAMING_SNAKE_CASE	)

         if return_tensors is not None:
             A       :   int					=						padded_inputs.convert_to_tensors(SCREAMING_SNAKE_CASE	)

         return padded_inputs




