450 Pound Library Program

[Sion Arrowsmith]

mwt <michaeltaft at gmail.com> wrote:
>        while len(self.stacks) == 0:

To (kind of) repeat myself, the idiomatic Python would be:

        while not self.stacks:

An empty list is considered to be false, hence testing the list
itself is the same as testing len(l) > 0 .

As someone else has noticed, you're using len() an awful lot
when you don't need to.

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