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Commit 1b30337

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fixed indexing error (#23)
Enter your message: vishal Enter you key [1 - 26]: 7 Encrypt or Decrypt? [E/D]: e --------------------------------------------------------------------------- IndexError Traceback (most recent call last) <ipython-input-9-9d857a810c45> in <module> 35 36 if __name__ == '__main__': ---> 37 main() <ipython-input-9-9d857a810c45> in main() 30 31 if choice.lower().startswith('e'): ---> 32 print(encrypt(message, key)) 33 else: 34 print(decrypt(message, key)) <ipython-input-9-9d857a810c45> in encrypt(message, key) 9 num = LETTERS.find(chars) 10 num += key ---> 11 encrypted += LETTERS[num] 12 13 return encrypted IndexError: string index out of range ______________________________________________ Above issue was solved
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‎Programs/P40_CipherText.py

Lines changed: 9 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -11,7 +11,10 @@ def encrypt(message, key):
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if chars in LETTERS:
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num = LETTERS.find(chars)
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num += key
14-
encrypted += LETTERS[num]
14+
if num>25:
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num=num%25
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num=num-1
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encrypted =encrypted + LETTERS[num]
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return encrypted
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@@ -21,8 +24,11 @@ def decrypt(message, key):
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for chars in message:
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if chars in LETTERS:
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num = LETTERS.find(chars)
24-
num -= key
25-
decrypted += LETTERS[num]
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if num>25:
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num=num%25
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num=num-1
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num = num -key
31+
decrypted =decrypted+LETTERS[num]
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return decrypted
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