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POHow to process a String input including single quotation
 

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  1. POHow to process a String input including single quotation
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    <p>I wrote a script by python which prompts users to Enter a string, then encode or decode it. However, one of the users Entered single quotation( this -> ' ) so the script stopped. How can I solve this problem. I would like to accept single quotation as an input. the script looks like this:</p> <pre><code>while True: input = raw_input('Enter a word or sentence') if input == 'done':break n = raw_input('Enter an encode number') print encode(input,n) #this function encodes the input by n and returns encoded words </code></pre> <p>There are ord and chr function in the encode function.</p> <p>this is encode function</p> <pre><code>def encode(word,n): """ word: strings you wanna encode or decode n: a number you wanna encode or decode by """ code = 0 rotate = '' for letter in word: if ord(letter) == ord(',') or ord(letter)== ord('.') or ord(letter) == ord(' ') or ord(letter) == ord('?') or ord(letter) == ("'"): rotate += letter continue rotate += rotate_num(letter,n,letter.islower()) return rotate def rotate_num(letter,n,lower): """ n: a number you wanna encode or decode by lower:Assign True if the letter is lowercase, otherwiser False """ if lower: a = 'a' z = 'z' else: a = 'A' z = 'Z' code = ord(letter)+n if code &gt; ord(z): code = code - 1 - ord(z)+ ord(a) if code &lt; ord(a): code = ord(z) - ( ord(a)-code-1) return chr(code) </code></pre> <p>(the rotate_num function should be indented. I missed copying)</p> <p>the problem was that the input was too long(He entered too long sentence). However, other problem remained: in the encode function, I wrote: if the letter is a single quotation, it should not be encoded, but actually, the single quotation was encoded</p>
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    1. COThe problem is in your encode function, please post that.
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    2. COCan u post the encode function? as far as I tested, `input` is correct, whether there is a single quote or not.
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    3. COI'm sorry to late to post the code
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