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Dict Concat

Author:
tomjleo
Posted:
January 9, 2014
Language:
Python
Version:
1.6
Tags:
dict dicts dictionary concat
Score:
0 (after 0 ratings)

Wanted a simple function to concatenate n dictionaries. Each dictionary passed in is deep copied to avoid any possible mutation of dictionaries being concatenated.

Dictionary m's key/values will be overwritten by dictionary m+1's key/values.

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import copy
def dict_concat(*args):
    """Concatinates a new dictionary without any side effects"""
    cursor = iter(args)
    d_final = copy.deepcopy(cursor.next())
    for d in cursor:
        d_final.update(copy.deepcopy(d))
    return d_final

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