

import itertools
import os
import re


__UpperCAmelCase								=			re.compile(R"""([A-Z]+)([A-Z][a-z])""")
__UpperCAmelCase								=			re.compile(R"""([a-z\d])([A-Z])""")

__UpperCAmelCase								=			re.compile(R"""(?<!_)_(?!_)""")
__UpperCAmelCase								=			re.compile(R"""(_{2,})""")

__UpperCAmelCase								=			r"^\w+(\.\w+)*$"

__UpperCAmelCase								=			r"<>:/\|?*"





def      snake_case_				(__A					:						Union[str, Any]					):
   __lowerCAmelCase  :      str    =						_uppercase_uppercase_re.sub(r"""\1_\2""" ,       __lowerCAmelCase					)
   __lowerCAmelCase  :      Any    =						_lowercase_uppercase_re.sub(r"""\1_\2""" ,       __lowerCAmelCase					)
   return name.lower()





def      snake_case_				(__A					:						Any					):
   __lowerCAmelCase  :      List[Any]    =						_single_underscore_re.split(__lowerCAmelCase					)
   __lowerCAmelCase  :      Any    =						[_multiple_underscores_re.split(__lowerCAmelCase					) for n in name]
   return "".join(n.capitalize() for n in itertools.chain.from_iterable(__lowerCAmelCase					) if n != """"""					)





def      snake_case_				(__A					:						int					):
   if os.path.basename(__lowerCAmelCase					) != name:
      raise ValueError(f'''Should be a dataset name, not a path: {name}'''					)
   return camelcase_to_snakecase(__lowerCAmelCase					)





def      snake_case_				(__A					:						Optional[int] ,       __A					:						int					):
   if os.path.basename(__lowerCAmelCase					) != name:
      raise ValueError(f'''Should be a dataset name, not a path: {name}'''					)
   if not re.match(_split_re ,       __lowerCAmelCase					):
      raise ValueError(f'''Split name should match \'{_split_re}\'\' but got \'{split}\'.'''					)
   return f'''{filename_prefix_for_name(__lowerCAmelCase					)}-{split}'''





def      snake_case_				(__A					:						List[Any] ,       __A					:						Union[str, Any] ,       __A					:						Optional[int] ,       __A					:						Tuple=None					):
   __lowerCAmelCase  :      Dict    =						filename_prefix_for_split(__lowerCAmelCase ,       __lowerCAmelCase					)
   if filetype_suffix:
      prefix += f'''.{filetype_suffix}'''
   __lowerCAmelCase  :      Dict    =						os.path.join(__lowerCAmelCase ,       __lowerCAmelCase					)
   return f'''{filepath}*'''





def      snake_case_				(__A					:						str ,       __A					:						List[Any] ,       __A					:						Union[str, Any] ,       __A					:						str=None ,       __A					:						int=None					):
   __lowerCAmelCase  :      Optional[Any]    =						filename_prefix_for_split(__lowerCAmelCase ,       __lowerCAmelCase					)
   __lowerCAmelCase  :      Any    =						os.path.join(__lowerCAmelCase ,       __lowerCAmelCase					)

   if shard_lengths:
      __lowerCAmelCase  :      int    =						len(__lowerCAmelCase					)
      __lowerCAmelCase  :      str    =						[f'''{prefix}-{shard_id:05d}-of-{num_shards:05d}''' for shard_id in range(__lowerCAmelCase					)]
      if filetype_suffix:
         __lowerCAmelCase  :      List[str]    =						[filename + f'''.{filetype_suffix}''' for filename in filenames]
      return filenames
   else:
      __lowerCAmelCase  :      int    =						prefix
      if filetype_suffix:
         filename += f'''.{filetype_suffix}'''
      return [filename]





import numpy as np
import qiskit





def      snake_case_				(__A					:						int = 8 ,       __A					:						int | None = None					)      ->     str:
   __lowerCAmelCase  :      List[Any]    =						np.random.default_rng(seed=__A					)

   # Roughly 25% of the qubits will contribute to the key.
   # So we take more than we need.
   __lowerCAmelCase  :      Tuple    =						6 * key_len
   # Measurement basis for Alice's qubits.
   __lowerCAmelCase  :      List[Any]    =						rng.integers(2 ,       size=__A					)
   # The set of states Alice will prepare.
   __lowerCAmelCase  :      List[str]    =						rng.integers(2 ,       size=__A					)
   # Measurement basis for Bob's qubits.
   __lowerCAmelCase  :      List[Any]    =						rng.integers(2 ,       size=__A					)

   # Quantum Circuit to simulate BB84
   __lowerCAmelCase  :      int    =						qiskit.QuantumCircuit(__A ,       name="""BB84"""					)

   # Alice prepares her qubits according to rules above.
   for index, _ in enumerate(__A					):
      if alice_state[index] == 1:
         bbaa_circ.x(__A					)
      if alice_basis[index] == 1:
         bbaa_circ.h(__A					)
   bbaa_circ.barrier()

   # Bob measures the received qubits according to rules above.
   for index, _ in enumerate(__A					):
      if bob_basis[index] == 1:
         bbaa_circ.h(__A					)

   bbaa_circ.barrier()
   bbaa_circ.measure_all()

   # Simulate the quantum circuit.
   __lowerCAmelCase  :      Optional[Any]    =						qiskit.Aer.get_backend("""aer_simulator"""					)
   # We only need to run one shot because the key is unique.
   # Multiple shots will produce the same key.
   __lowerCAmelCase  :      Optional[Any]    =						qiskit.execute(__A ,       __A ,       shots=1 ,       seed_simulator=__A					)
   # Returns the result of measurement.
   __lowerCAmelCase  :      List[Any]    =						job.result().get_counts(__A					).most_frequent()

   # Extracting the generated key from the simulation results.
   # Only keep measurement results where Alice and Bob chose the same basis.
   __lowerCAmelCase  :      Optional[int]    =						"""""".join(
       [
           result_bit
           for alice_basis_bit, bob_basis_bit, result_bit in zip(
               __A ,       __A ,       __A					)
           if alice_basis_bit == bob_basis_bit
       ]					)

   # Get final key. Pad with 0 if too short, otherwise truncate.
   __lowerCAmelCase  :      Tuple    =						gen_key[:key_len] if len(__A					) >= key_len else gen_key.ljust(__A ,       """0"""					)
   return key


if __name__ == "__main__":
   print(F'The generated key is : {bbaa(8, seed=0)}')
   from doctest import testmod

   testmod()


