



def 		lowerCAmelCase__    (					UpperCamelCase_				:       str	)->  bool:
    return credit_card_number.startswith(('''34''', '''35''', '''37''', '''4''', '''5''', '''6''')	)



def 		lowerCAmelCase__    (					UpperCamelCase_				:       str	)->  bool:
    A__		 =					credit_card_number
    A__		 =					0
    A__		 =					len(UpperCamelCase_	) - 2
    for i in range(UpperCamelCase_ ,       -1 ,       -2	):
        #  double the value of every second digit
        A__		 =					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 %= 1_0
            digit += 1
        A__		 =					cc_number[:i] + str(UpperCamelCase_	) + cc_number[i + 1 :]
        total += digit

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

    return total % 1_0 == 0



def 		lowerCAmelCase__    (					UpperCamelCase_				:       str	)->  bool:
    A__		 =					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 1_3 <= len(UpperCamelCase_	) <= 1_6:
        print(f"{error_message} of its length."	)
        return False

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

    if not luhn_validation(UpperCamelCase_	):
        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")





# Copyright 2022 The HuggingFace Team and The OpenBMB Team. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from typing import TYPE_CHECKING

# rely on isort to merge the imports
from ...utils import OptionalDependencyNotAvailable, _LazyModule, is_tokenizers_available, is_torch_available


_lowercase						  =		{
    "configuration_cpmant": ["CPMANT_PRETRAINED_CONFIG_ARCHIVE_MAP", "CpmAntConfig"],
    "tokenization_cpmant": ["CpmAntTokenizer"],
}

try:
   if not is_torch_available():
      raise OptionalDependencyNotAvailable()
except OptionalDependencyNotAvailable:
   pass
else:
   _lowercase						  =		[
       "CPMANT_PRETRAINED_MODEL_ARCHIVE_LIST",
       "CpmAntForCausalLM",
       "CpmAntModel",
       "CpmAntPreTrainedModel",
   ]


if TYPE_CHECKING:
   from .configuration_cpmant import CPMANT_PRETRAINED_CONFIG_ARCHIVE_MAP, CpmAntConfig
   from .tokenization_cpmant import CpmAntTokenizer

   try:
      if not is_torch_available():
         raise OptionalDependencyNotAvailable()
   except OptionalDependencyNotAvailable:
      pass
   else:
      from .modeling_cpmant import (
          CPMANT_PRETRAINED_MODEL_ARCHIVE_LIST,
          CpmAntForCausalLM,
          CpmAntModel,
          CpmAntPreTrainedModel,
      )


else:
   import sys

   _lowercase						  =		_LazyModule(__name__, globals()["__file__"], _import_structure, module_spec=__spec__)
