Matt, There is also a nice thing you need to know about Python if you already do not know. That is the fact that all empty collections bool to False. This makes Truth testing easier.
>>> bool([])
False
>>> bool('')
False
>>> bool({})
False
>>> bool([1])
True
>>> bool([[]])
True
>>> bool(' ')
True
any empty collection, string, or 0 always bools to False.
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