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- """
- caesar_shift.py
- MIT License
- Copyright (c) 2017 andynines
- Permission is hereby granted, free of charge, to any person obtaining a copy
- of this software and associated documentation files (the "Software"), to deal
- in the Software without restriction, including without limitation the rights
- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- copies of the Software, and to permit persons to whom the Software is
- furnished to do so, subject to the following conditions:
- The above copyright notice and this permission notice shall be included in all
- copies or substantial portions of the Software.
- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- SOFTWARE.
- """
- from string import ascii_uppercase
- ALPHABET = list(ascii_uppercase)
- shift = lambda text, key: "".join([ALPHABET[(ALPHABET.index(character) + key) % len(ALPHABET)] if character in ALPHABET else character for character in text.upper()])
- crack = lambda text: [shift(text, key) for key in range(1, len(ALPHABET))]
- def main():
- EXIT_COMMAND = "/e"
- print("Caesar Shift Cipher\nType {} to exit".format(EXIT_COMMAND))
- while True:
- message = input("\n>")
- if message == EXIT_COMMAND:
- break
- for index, character in enumerate(crack(message)):
- print("{}. {}".format(index + 1, character))
- if __name__ == "__main__":
- main()
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