

import re

from filelock import FileLock


try:
	import nltk

	A_       : Optional[Any]         =			True
except (ImportError, ModuleNotFoundError):
	A_       : Tuple         =			False

if NLTK_AVAILABLE:
	with FileLock('.lock') as lock:
		nltk.download('punkt', quiet=True)

def 						UpperCamelCase					(lowercase_: str					)     ->      str:
	re.sub("""<n>"""    ,      """"""    ,      lowercase_					)  # remove pegasus newline char
	assert NLTK_AVAILABLE, "nltk must be installed to separate newlines between sentences. (pip install nltk)"
	return "\n".join(nltk.sent_tokenize(lowercase_					)					)






import string

def 						UpperCamelCase					(lowercase_: str					)     ->      None:
	for key in range(len(string.ascii_uppercase					)					):
		A__							:    Dict        =		""""""
		for symbol in message:
			if symbol in string.ascii_uppercase:
				A__							:    Dict        =		string.ascii_uppercase.find(lowercase_					)
				A__							:    Optional[int]        =		num - key
				if num < 0:
					A__							:    Optional[int]        =		num + len(string.ascii_uppercase					)
				A__							:    Any        =		translated + string.ascii_uppercase[num]
			else:
				A__							:    Optional[Any]        =		translated + symbol
		print(f"""Decryption using Key #{key}: {translated}"""					)

def 						UpperCamelCase					()     ->      None:
	A__							:    Optional[Any]        =		input("""Encrypted message: """					)
	A__							:    Optional[Any]        =		message.upper()
	decrypt(lowercase_					)


if __name__ == "__main__":
	import doctest

	doctest.testmod()
	main()



