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shiyanhui/gist:a9c4ac8de02cf93658b72da0b89badd4

Created September 23, 2016 17:23
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groupby
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gistfile1.py
import itertools
t1 = [{"id": 1, "abc": "2"}, {"id": 1, "abc": "3"}, {"id": 2, "abc": "2"}]
print [{"id": k, "abc": (lambda v: [item["abc"] for item in v] if len(v) > 1 else v[0]["abc"])(list(group))} for k, group in itertools.groupby(t1, lambda item: item["id"])]
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