Ex 2 Exercise Objectives • Text file processing Problem Description Python A simple scheme to encrypt text is as follows: • You ask the user to enter a keyword and remove duplicate letters from it. •...

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Extracted text: Ex 2 Exercise Objectives • Text file processing Problem Description Python A simple scheme to encrypt text is as follows: • You ask the user to enter a keyword and remove duplicate letters from it. • Fill the keyword and the remaining letters of the alphabet into a 5x5 square (Since there are only 25 squares, Z will not be changed) Filling the keyword and the remaining letters should be done in sequence column by column. Example with the keyword 'slayer' R. M B U A V Y E F K To encrypt a letter, you find the last element in the letter's row and the element with the same column(position) of the letter in the last row. (in this order). • If the letter is already in the last row or column, you simply use the same letter. • Space and new line will not be changed (same as the Z letter) • Separate each letter with underscore () • Your program needs to read a file called data.txt and encrypt the content with the scheme above and the save the output in a file called data.enc. Example: Keyword = slayer Text to encrypt = hello output = UK_XE_UE_UE_VQ t%3D H - UK E - XE L- UE L- UE 0- VQ