


import random
import sys

from . import cryptomath_module as cryptomath

_A							     =       (
    r' !"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`'
    r'abcdefghijklmnopqrstuvwxyz{|}~'
)

def 			__SCREAMING_SNAKE_CASE		(		UpperCamelCase		:      int     ,					UpperCamelCase		:      int     ,					UpperCamelCase		:      str	)     ->	None:



	"""simple docstring"""






	if mode == "encrypt":
		if key_a == 1:
			sys.exit(
			    """The affine cipher becomes weak when key """
			    """A is set to 1. Choose different key"""	)
		if key_b == 0:
			sys.exit(
			    """The affine cipher becomes weak when key """
			    """B is set to 0. Choose different key"""	)
	if key_a < 0 or key_b < 0 or key_b > len(UpperCamelCase	) - 1:
		sys.exit(
		    """Key A must be greater than 0 and key B must """
		    F"""be between 0 and {len(UpperCamelCase	) - 1}."""	)
	if cryptomath.gcd(UpperCamelCase     ,					len(UpperCamelCase	)	) != 1:
		sys.exit(
		    F"""Key A {key_a} and the symbol set size {len(UpperCamelCase	)} """
		    """are not relatively prime. Choose a different key."""	)

def 			__SCREAMING_SNAKE_CASE		(		UpperCamelCase		:      int     ,					UpperCamelCase		:      str	)     ->	str:



	"""simple docstring"""






	a_			, a_     			=   divmod(UpperCamelCase     ,					len(UpperCamelCase	)	)
	check_keys(UpperCamelCase     ,					UpperCamelCase     ,					"""encrypt"""	)
	a_     			=   """"""
	for symbol in message:
		if symbol in SYMBOLS:
			a_     			=   SYMBOLS.find(UpperCamelCase	)
			cipher_text += SYMBOLS[(sym_index * key_a + key_b) % len(UpperCamelCase	)]
		else:
			cipher_text += symbol
	return cipher_text

def 			__SCREAMING_SNAKE_CASE		(		UpperCamelCase		:      int     ,					UpperCamelCase		:      str	)     ->	str:



	"""simple docstring"""






	a_			, a_     			=   divmod(UpperCamelCase     ,					len(UpperCamelCase	)	)
	check_keys(UpperCamelCase     ,					UpperCamelCase     ,					"""decrypt"""	)
	a_     			=   """"""
	a_     			=   cryptomath.find_mod_inverse(UpperCamelCase     ,					len(UpperCamelCase	)	)
	for symbol in message:
		if symbol in SYMBOLS:
			a_     			=   SYMBOLS.find(UpperCamelCase	)
			plain_text += SYMBOLS[
			    (sym_index - key_b) * mod_inverse_of_key_a % len(UpperCamelCase	)
			]
		else:
			plain_text += symbol
	return plain_text

def 			__SCREAMING_SNAKE_CASE		(		)     ->	int:



	"""simple docstring"""






	while True:
		a_     			=   random.randint(2     ,					len(UpperCamelCase	)	)
		a_     			=   random.randint(2     ,					len(UpperCamelCase	)	)
		if cryptomath.gcd(UpperCamelCase     ,					len(UpperCamelCase	)	) == 1 and key_b % len(UpperCamelCase	) != 0:
			return key_b * len(UpperCamelCase	) + key_b

def 			__SCREAMING_SNAKE_CASE		(		)     ->	None:



	"""simple docstring"""






	a_     			=   input("""Enter message: """	).strip()
	a_     			=   int(input("""Enter key [2000 - 9000]: """	).strip()	)
	a_     			=   input("""Encrypt/Decrypt [E/D]: """	).strip().lower()

	if mode.startswith("""e"""	):
		a_     			=   """encrypt"""
		a_     			=   encrypt_message(UpperCamelCase     ,					UpperCamelCase	)
	elif mode.startswith("""d"""	):
		a_     			=   """decrypt"""
		a_     			=   decrypt_message(UpperCamelCase     ,					UpperCamelCase	)
	print(F"""\n{mode.title()}ed text: \n{translated}"""	)


if __name__ == "__main__":
			import doctest

			doctest.testmod()
			# main()



class 			lowerCamelCase_					:





							def __init__(							self    ):
								a_     			=   [0, 1]





							def   __magic_name__      (							self			,       _SCREAMING_SNAKE_CASE    ):
								if (difference := index - (len(self.sequence    ) - 2)) >= 1:
									for _ in range(_SCREAMING_SNAKE_CASE    ):
										self.sequence.append(self.sequence[-1] + self.sequence[-2]    )
								return self.sequence[:index]







def 			__SCREAMING_SNAKE_CASE		(		)     ->	None:



	"""simple docstring"""






	print(
	    """Fibonacci Series Using Dynamic Programming\n"""     ,					"""Enter the index of the Fibonacci number you want to calculate """     ,					"""in the prompt below. (To exit enter exit or Ctrl-C)\n"""     ,					sep=""""""     ,					)
	a_     			=   Fibonacci()

	while True:
		a_     			=   input(""">> """	)
		if prompt in {"exit", "quit"}:
			break

		try:
			a_     			=   int(UpperCamelCase	)
		except ValueError:
			print("""Enter a number or 'exit'"""	)
			continue

		print(fibonacci.get(UpperCamelCase	)	)


if __name__ == "__main__":
			main()