


from string import ascii_uppercase






def      _lowercase(				__a							:	str						,    __a							:	str						,    __a							:	bool = False						,    __a							:	str = ascii_uppercase    ):
       a__     						=keyword.upper()
       a__     						=plaintext.upper()
       a__     						=set(__a    )

       # create a list of unique characters in the keyword - their order matters
       # it determines how we will map plaintext characters to the ciphertext
       a__     						=[]
       for char in keyword:
              if char in alphabet_set and char not in unique_chars:
                     unique_chars.append(__a    )
    # the number of those unique characters will determine the number of rows
       a__     						=len(__a    )

       # create a shifted version of the alphabet
       a__     						=unique_chars + [
           char for char in alphabet if char not in unique_chars
       ]

       # create a modified alphabet by splitting the shifted alphabet into rows
       a__     						=[
           shifted_alphabet[k : k + num_unique_chars_in_keyword]
           for k in range(0						,    26						,    __a    )
       ]

       # map the alphabet characters to the modified alphabet characters
       # going 'vertically' through the modified alphabet - consider columns first
       a__     						={}
       a__     						=0
       for column in range(__a    ):
              for row in modified_alphabet:
                     # if current row (the last one) is too short, break out of loop
                     if len(__a    ) <= column:
                            break

                     # map current letter to letter in modified alphabet
                     a__     						=row[column]
                     letter_index += 1

       if verbose:
              print(__a    )
       # create the encrypted text by mapping the plaintext to the modified alphabet
       return "".join(mapping[char] if char in mapping else char for char in plaintext    )


if __name__ == "__main__":
 # example use
 print(mixed_keyword('college', 'UNIVERSITY'))





from __future__ import annotations






def      _lowercase(				__a							:	float | int						,    __a							:	float | int						,    __a							:	float | int						,    ):
							if not all((nth_term, start_term_a, common_ratio_r)    ):
														return []
							a__     						=[]
							a__     						=1
							a__     						=common_ratio_r
							for _ in range(int(__a    )    ):
														if not series:
																					series.append(__a    )
														else:
																					power += 1
																					series.append(float(start_term_a * multiple    )    )
																					a__     						=pow(float(__a    )						,    __a    )
							return series


if __name__ == "__main__":
	import doctest

	doctest.testmod()

	_lowerCAmelCase:	Tuple      							=					float(input('Enter the last number (n term) of the Geometric Series'))
	_lowerCAmelCase:	Optional[int]      							=					float(input('Enter the starting term (a) of the Geometric Series'))
	_lowerCAmelCase:	List[Any]      							=					float(
	    input('Enter the common ratio between two terms (r) of the Geometric Series')
	)
	print('Formula of Geometric Series => a + ar + ar^2 ... +ar^n')
	print(geometric_series(nth_term, start_term_a, common_ratio_r))

