7 Feb 2007 lkcl   » (Master)

this is _way_ cool code, and i wrote it :)




def add_d2(*args): """ cool function for making dictionaries of dictionaries ad infinitum.

1st arg: top-level dictionary of .... of .... of ... of dictionaries [... keyname for dictionary of dictionaries of dictionaries ...] [... keyname for dictionary of dictionaries ...] [... keyname for last dictionary ...] final arg: value to be stored. """

dict_list = [args[0]] key_names = list(args[1:-1]) val = args[-1]

for keyname in key_names[:-1]: dict_list.append(dict_list[-1].setdefault(keyname, {})) dict_list[-1][key_names[-1]] = val

you use it like this:

 
    d = {}
    add_d2(d, keyname1, keyname2, asmanykeynamesasyouwant, val)

and then you can do this:


    print d[keyname1][keyname2][asmanykeysasyouwant]

and it will return val.

i've been using a two-dimensional dictionary-of-dictionaries-of-values for quite some time in some of the code i've been working on, and when i needed a third dimension i went RRRRIGHT, that's it, i'm writing a multi-dimensional dictionary-storing-thing.

it even works for 1-dimensional dictionary things (duh, so why bother?? just do d[x] = y but yes, if you have a function which does multidimensional storage then it's useful not to have to special-case 1 dimension)

y'know... _just_ sometimes, a simple bit of code can be... really cool :)

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