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    <p>I've had a look at your code, and it looks like you make a lot of function calls and attribute lookups as part of your 'checking' or looking ahead before leaping. You also have a lot of code dedicated to track the same condition, i.e many bits of code looking at creating 'unique' IDs. </p> <p>instead of trying to assign some kind of unique string to each ballot, couldn't you just use the ballotID (an integer number?)</p> <p>now you could have a dictionary (uniqueBallotIDs) mapping ballotID and the actual ballot object.</p> <p>the process might be something like this:</p> <pre><code>def appendBallot(self, ballot, ballotID=None): if ballotID is None: ballotID = self._getuniqueid() # maybe just has a counter? up to you. # check to see if we have seen this ballot before. if not self._isunique(ballotID): # code for non-unique ballot ids. else: # code for unique ballot ids. self.ballotOrder.append(i) </code></pre> <p>You might be able to handle some of your worries about the dictionary missing a given key by using a defaultdict (from the collections module). <a href="http://docs.python.org/library/collections.html" rel="nofollow noreferrer">collection docs</a></p> <p><strong>Edit</strong> for completeness I will include a sample usage of the defaultdict:</p> <pre><code>&gt;&gt;&gt; from collections import defaultdict &gt;&gt;&gt; ballotIDmap = defaultdict(list) &gt;&gt;&gt; ballotID, ballot = 1, object() # some nominal ballotID and object. &gt;&gt;&gt; # I will now try to save my ballotID. &gt;&gt;&gt; ballotIDmap[ballotID].append(ballot) &gt;&gt;&gt; ballotIDmap.items() [(1, [&lt;object object at 0x009BB950&gt;])] </code></pre>
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