By slacy|General|Be the first to comment!
I’ve been struggling with data modeling decisions for my MongoDB interface layer. Should results from the DB look like a dict, or like an object? Like both? What are the advantages and disadvantages of each approach? I’ve got my own opinions on this, but thought I’d share this interesting technique, making something behave as either [...]
Continue Reading →I asked previously how to avoid code like this: # Implement d[3][4] = 5 if not 3 in d: d[3] = {} d[3][4] = 5 I found the answer, and it lies in collections.defaultdict. defaultdict is just like dict, except that you pre-specify an initial default values for items that aren’t present. For example: d [...]
Continue Reading →The code I’m working on frequently uses multi-dimensional dicts in Python. There is a bunch of code that seems to be always doing this: # a,b, and c have come from some external data source, QuerySet, etc. a = ‘axis_1′ b = ‘axis_2′ c = ‘axis_3′ d = ‘value’ if a not in context: context[a] [...]
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