'''simple docstring'''

import argparse
import struct
import unittest



class 			UpperCAmelCase  :





       '''simple docstring'''



       def __init__(						self	,   __lowerCAmelCase )  ->  None:
        lowercase__				:    List[str]  =					data

        # Initialize hash values
        lowercase__				:    Union[str, Any]  =					[
            0X6A09E667,
            0XBB67AE85,
            0X3C6EF372,
            0XA54FF53A,
            0X510E527F,
            0X9B05688C,
            0X1F83D9AB,
            0X5BE0CD19,
        ]

        # Initialize round constants
        lowercase__				:    Tuple  =					[
            0X428A2F98,
            0X71374491,
            0XB5C0FBCF,
            0XE9B5DBA5,
            0X3956C25B,
            0X59F111F1,
            0X923F82A4,
            0XAB1C5ED5,
            0XD807AA98,
            0X12835B01,
            0X243185BE,
            0X550C7DC3,
            0X72BE5D74,
            0X80DEB1FE,
            0X9BDC06A7,
            0XC19BF174,
            0XE49B69C1,
            0XEFBE4786,
            0X0FC19DC6,
            0X240CA1CC,
            0X2DE92C6F,
            0X4A7484AA,
            0X5CB0A9DC,
            0X76F988DA,
            0X983E5152,
            0XA831C66D,
            0XB00327C8,
            0XBF597FC7,
            0XC6E00BF3,
            0XD5A79147,
            0X06CA6351,
            0X14292967,
            0X27B70A85,
            0X2E1B2138,
            0X4D2C6DFC,
            0X53380D13,
            0X650A7354,
            0X766A0ABB,
            0X81C2C92E,
            0X92722C85,
            0XA2BFE8A1,
            0XA81A664B,
            0XC24B8B70,
            0XC76C51A3,
            0XD192E819,
            0XD6990624,
            0XF40E3585,
            0X106AA070,
            0X19A4C116,
            0X1E376C08,
            0X2748774C,
            0X34B0BCB5,
            0X391C0CB3,
            0X4ED8AA4A,
            0X5B9CCA4F,
            0X682E6FF3,
            0X748F82EE,
            0X78A5636F,
            0X84C87814,
            0X8CC70208,
            0X90BEFFFA,
            0XA4506CEB,
            0XBEF9A3F7,
            0XC67178F2,
        ]

        lowercase__				:    str  =					self.preprocessing(self.data )
        self.final_hash()

       @staticmethod
       def _lowerCAmelCase(						__lowerCAmelCase )  ->  bytes:
        lowercase__				:    Any  =					b'''\x80''' + (b'''\x00''' * (63 - (len(__lowerCAmelCase ) + 8) % 64))
        lowercase__				:    List[Any]  =					struct.pack('''>Q'''	,   (len(__lowerCAmelCase ) * 8) )
        return data + padding + big_endian_integer

       def _lowerCAmelCase(						self )  ->  None:
        # Convert into blocks of 64 bytes
        lowercase__				:    Tuple  =					[
            self.preprocessed_data[x : x + 64]
            for x in range(0	,   len(self.preprocessed_data )	,   64 )
        ]

        for block in self.blocks:
         # Convert the given block into a list of 4 byte integers
         lowercase__				:    Optional[Any]  =					list(struct.unpack('''>16L'''	,   __lowerCAmelCase ) )
         # add 48 0-ed integers
         words += [0] * 48

         lowercase__ ,							lowercase__ ,							lowercase__ ,							lowercase__ ,							lowercase__ ,							lowercase__ ,							lowercase__ ,							lowercase__				:    Tuple  =					self.hashes

         for index in range(0	,   64 ):
          if index > 15:
           # modify the zero-ed indexes at the end of the array
           lowercase__				:    str  =					(
               self.ror(words[index - 15]	,   7 )
               ^ self.ror(words[index - 15]	,   18 )
               ^ (words[index - 15] >> 3)
           )
           lowercase__				:    Any  =					(
               self.ror(words[index - 2]	,   17 )
               ^ self.ror(words[index - 2]	,   19 )
               ^ (words[index - 2] >> 10)
           )

           lowercase__				:    Dict  =					(
               words[index - 16] + sa + words[index - 7] + sa
           ) % 0X100000000

          # Compression
          lowercase__				:    Optional[Any]  =					self.ror(__lowerCAmelCase	,   6 ) ^ self.ror(__lowerCAmelCase	,   11 ) ^ self.ror(__lowerCAmelCase	,   25 )
          lowercase__				:    Dict  =					(e & f) ^ ((~e & 0XFFFFFFFF) & g)
          lowercase__				:    Optional[Any]  =					(
              h + sa + ch + self.round_constants[index] + words[index]
          ) % 0X100000000
          lowercase__				:    Union[str, Any]  =					self.ror(__lowerCAmelCase	,   2 ) ^ self.ror(__lowerCAmelCase	,   13 ) ^ self.ror(__lowerCAmelCase	,   22 )
          lowercase__				:    int  =					(a & b) ^ (a & c) ^ (b & c)
          lowercase__				:    Tuple  =					(sa + maj) % 0X100000000

          lowercase__ ,							lowercase__ ,							lowercase__ ,							lowercase__ ,							lowercase__ ,							lowercase__ ,							lowercase__ ,							lowercase__				:    Tuple  =					(
              g,
              f,
              e,
              ((d + tempa) % 0X100000000),
              c,
              b,
              a,
              ((tempa + tempa) % 0X100000000),
          )

         lowercase__				:    Tuple  =					[a, b, c, d, e, f, g, h]

         # Modify final values
         lowercase__				:    List[Any]  =					[
             ((element + mutated_hash_values[index]) % 0X100000000)
             for index, element in enumerate(self.hashes )
         ]

        lowercase__				:    Tuple  =					''''''.join([hex(__lowerCAmelCase )[2:].zfill(8 ) for value in self.hashes] )


       def _lowerCAmelCase(						self	,   __lowerCAmelCase	,   __lowerCAmelCase )  ->  int:
        return 0XFFFFFFFF & (value << (32 - rotations)) | (value >> rotations)



class 			UpperCAmelCase  (						unittest.TestCase					):





       '''simple docstring'''



       def _lowerCAmelCase(						self )  ->  None:
        import hashlib

        lowercase__				:    Union[str, Any]  =					bytes('''Test String'''	,   '''utf-8''' )
        self.assertEqual(SHAaaa(__lowerCAmelCase ).hash	,   hashlib.shaaaa(__lowerCAmelCase ).hexdigest() )


def 			__UpperCamelCase       (   ):
 import doctest

 doctest.testmod()

 lowercase__				:    str  =					argparse.ArgumentParser()
 parser.add_argument(
     '''-s'''		,     '''--string'''		,     dest='''input_string'''		,     default='''Hello World!! Welcome to Cryptography'''		,     help='''Hash the string'''		,     )
 parser.add_argument(
     '''-f'''		,     '''--file'''		,     dest='''input_file'''		,     help='''Hash contents of a file'''     )

 lowercase__				:    Dict  =					parser.parse_args()

 lowercase__				:    Union[str, Any]  =					args.input_string

 # hash input should be a bytestring
 if args.input_file:
  with open(args.input_file		,     '''rb'''     ) as f:
   lowercase__				:    List[Any]  =					f.read()
 else:
  lowercase__				:    List[Any]  =					bytes(UpperCAmelCase		,     '''utf-8'''     )

 print(SHAaaa(UpperCAmelCase     ).hash     )


if __name__ == "__main__":
  main()


'''simple docstring'''

import requests

__a: str          =   """https://newsapi.org/v1/articles?source=bbc-news&sortBy=top&apiKey="""
def 			__UpperCamelCase       (   UpperCAmelCase     ):
 # fetching a list of articles in json format
 lowercase__				:    Optional[Any]  =					requests.get(_NEWS_API + bbc_news_api_key     ).json()
 # each article in the list is a dict
 for i, article in enumerate(bbc_news_page['''articles''']		,     1     ):
  print(F"""{i}.) {article['title']}"""     )


if __name__ == "__main__":
  fetch_bbc_news(bbc_news_api_key="""<Your BBC News API key goes here>""")

