


'''simple docstring'''
import re


def 			a      (			__a   )  ->	str:



					'''simple docstring'''






					if len(re.findall('''[ATCG]''' ,					__a   )   ) != len(__a   ):
										raise ValueError('''Invalid Strand'''   )

					return dna.translate(dna.maketrans('''ATCG''' ,					'''TAGC'''   )   )


if __name__ == "__main__":
		import doctest

		doctest.testmod()




'''simple docstring'''





def 						__snake_case(				_lowerCAmelCase     ,   _lowerCAmelCase     ,   _lowerCAmelCase		)		-> float:
      snake_case__  :    str    						=      (num_of_terms / 2) * (2 * first_term + (num_of_terms - 1) * common_diff)
      # formula for sum of series
      return total





def 						__snake_case(				)		-> List[str]:
      print(sum_of_series(1     ,   1     ,   10		)		)


if __name__ == "__main__":
       import doctest

       doctest.testmod()
