Group/Count list of dictionaries based on value

Question

I\'ve got a list of Tokens which looks something like:

[{
    Value: \"Blah\",
    StartOffset: 0,
    EndOffset: 4
}, ... ]

What I want to do

Answer 1

import collections

# example token list
tokens = [{'Value':'Blah', 'Start':0}, {'Value':'BlahBlah'}]

count=collections.Counter([d['Value'] for d in tokens])
print count

shows

Counter({'BlahBlah': 1, 'Blah': 1})