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POMaking a Python script Object-Oriented
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copied!<p>I'm writing an application in Python that is going to have a lot of different functions, so logically I thought it would be best to split up my script into different modules. Currently my script reads in a text file that contains code which has been converted into tokens and spellings. The script then reconstructs the code into a string, with blank lines where comments would have been in the original code.</p> <p>I'm having a problem making the script object-oriented though. Whatever I try I can't seem to get the program running the same way it would as if it was just a single script file. Ideally I'd like to have two script files, one that contains a class and function that cleans and reconstructs the file. The second script would simply call the function from the class in the other file on a file given as an argument from the command line. This is my current script:</p> <pre><code>import sys tokenList = open(sys.argv[1], 'r') cleanedInput = '' prevLine = 0 for line in tokenList: if line.startswith('LINE:'): lineNo = int(line.split(':', 1)[1].strip()) diff = lineNo - prevLine - 1 if diff == 0: cleanedInput += '\n' if diff == 1: cleanedInput += '\n\n' else: cleanedInput += '\n' * diff prevLine = lineNo continue cleanedLine = line.split(':', 1)[1].strip() cleanedInput += cleanedLine + ' ' print cleanedInput </code></pre> <p>After following Alex Martelli advice below, I now have the following code which gives me the same output as my original code.</p> <pre><code>def main(): tokenList = open(sys.argv[1], 'r') cleanedInput = [] prevLine = 0 for line in tokenList: if line.startswith('LINE:'): lineNo = int(line.split(':', 1)[1].strip()) diff = lineNo - prevLine - 1 if diff == 0: cleanedInput.append('\n') if diff == 1: cleanedInput.append('\n\n') else: cleanedInput.append('\n' * diff) prevLine = lineNo continue cleanedLine = line.split(':', 1)[1].strip() cleanedInput.append(cleanedLine + ' ') print cleanedInput if __name__ == '__main__': main() </code></pre> <p>I would still like to split my code into multiple modules though. A 'cleaned file' in my program will have other functions performed on it so naturally a cleaned file should be a class in its own right?</p>

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