I'm not sure if you ever got a good answer. I for one am too lazy to look up the pages I found... but - check out http://aspn.activestate.com/ASPN/search?query=combinations§ion=PYTHONCKBK&type=Subsection
Tons of nice recipes... Personally I liked the one that dynamically generated a nested function - just cuz it was cool - total overkill for a 3 element permutation. otherwise a simple nested generator is perfect for this solution. Actually you could use the generator function generator to show you what the generator function should look like - try sayin that five times fast. Rob Cowie wrote: > Hi all, > > I wish to generate a sequence of the form 'aaa', 'aab', aac'.... 'aba', > 'abb', 'abc' etc. all the way to 'zzz'. > > How would you construct a generator to acheive this? > > A simple, working but somewhat inelegant solution is... > > alpha = ['a','b','c','d'] #shortened for brevity > alpha2 = ['a','b','c','d'] > alpha3 = ['a','b','c','d'] > > def generator(): > for char in alpha: > for char2 in alpha2: > for char3 in alpha3: > yield char + char2 + char3 > > x = generate() > x.next() # etc, etc, etc, -- http://mail.python.org/mailman/listinfo/python-list
