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    <p>First of all, many string functions – including strip and replace – are <a href="http://docs.python.org/library/string.html#deprecated-string-functions" rel="nofollow noreferrer" title="Deprecated string functions">deprecated</a>. The following answer uses string methods instead. (Instead of <code>string.strip(" Hello ")</code>, I use the equivalent of <code>" Hello ".strip()</code>.)</p> <p>Here's some code that will simplify the job for you. The following code assumes that whatever methods you call on your string, that method will return another string.</p> <pre><code>class O(object): c = str.capitalize r = str.replace s = str.strip def process_line(line, *ops): i = iter(ops) while True: try: op = i.next() args = i.next() except StopIteration: break line = op(line, *args) return line </code></pre> <p>The <code>O</code> class exists so that your highly abbreviated method names don't pollute your namespace. When you want to add more string methods, you add them to <code>O</code> in the same format as those given.</p> <p>The <code>process_line</code> function is where all the interesting things happen. First, here is a description of the argument format:</p> <ul> <li>The first argument is the string to be processed.</li> <li>The remaining arguments must be given in pairs. <ul> <li>The first argument of the pair is a string method. Use the shortened method names here.</li> <li>The second argument of the pair is a list representing the arguments to that particular string method.</li> </ul></li> </ul> <p>The <code>process_line</code> function returns the string that emerges after all these operations have performed.</p> <p>Here is some example code showing how you would use the above code in your own scripts. I've separated the arguments of <code>process_line</code> across multiple lines to show the grouping of the arguments. Of course, if you're just hacking away and using this code in day-to-day scripts, you can compress all the arguments onto one line; this actually makes it a little easier to read.</p> <pre><code>f = open("parrot_sketch.txt") for line in f: p = process_line( line, O.r, ["He's resting...", "This is an ex-parrot!"], O.c, [], O.s, [] ) print p </code></pre> <p>Of course, if you very specifically wanted to use numerals, you could name your functions <code>O.f1</code>, <code>O.f2</code>, <code>O.f3</code>… but I'm assuming that wasn't the spirit of your question.</p>
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