If you need to hold several bits of data about something in Python, it'sawfully tempting to just put everything into a tuple or a list and bedone with it; it's certainly the easiest way, and so crops up often .

(I've read that that Pythonic way to decide between a list and a tupleis whether or not the data is all the same type, in which case you use atuple, or different types, in which case you use a list. I don

Suppose that you have a Python utility program that does a number ofrelated things; it's invoked as ' program command .... ', and decideswhat to do based on what the command is. The obvious way to implementthis in Python is to have a function for each command and a top-leveldispatcher that looks up the function to call for each command andpasses it the arguments to process. Clearly you don't want to hard-codethis in the dispatcher function in a big