python list of dictionaries find duplicates based on value

Question

I have a list of dicts in python 2.7.

a =[{\'id\': 1,\'desc\': \'smth\'},
    {\'id\': 2,\'desc\': \'smthelse\'},
    {\'id\': 1,\'desc\': \'smthelse2\'},
          


        

Answer 1

You can try:

import operator, itertools

key = operator.itemgetter('id')

b = [{'id': x, 'desc': [d['desc'] for d in y]} 
     for x, y in itertools.groupby(sorted(a, key=key), key=key)]