python 数据分类

 

 

#!/usr/bin/env python
# coding: utf-8

import six
from functools import partial
from itertools import groupby

def sort_items_by_key(items, key):
    result = {}
    for k, v in key.items():
        ret = {}
        if isinstance(v, (six.string_types, six.integer_types)):
            tmp = filter(lambda x: x.get(k) == v, items)
            ret.setdefault(v, []).extend(tmp)
        elif isinstance(v, (list, set, tuple)):
            for vv in v:
                tmp = filter(lambda x: x.get(k) == vv, items)
                ret.setdefault(vv, []).extend(tmp)
        result.setdefault(k, []).append(ret)
    return result


def test_items_key():
    items = [
        {"id": 1, "name": "atom", "age": 2},
        {"id": 2, "name": "shylock", "age": 26},
        {"id": 3, "name": "john", "age": 26}
    ]

    key = {"id": [1,2,3], "age": 26}

    print(sort_items_by_key(items, key))

def sort_key(item, key):
    return item.get(key)

def test_items_key_groupBy():
    result = {}
    items = [
        {"id": 1, "name": "atom", "age": 25},
        {"id": 1, "name": "shylock", "age": 26},
        {"id": 3, "name": "john", "age": 26}
    ]
    for key in ["id", "age"]:
        func = partial(sort_key, key=key)
        result[key] = [{condition: list(numbers)} for condition, numbers in groupby(items, func)]
    print result

if __name__ == "__main__":
    test_items_key()
    print("-"*10)
    test_items_key_groupBy()

 

output:
{'age': [{26: [{'age': 26, 'id': 2, 'name': 'shylock'}, {'age': 26, 'id': 3, 'name': 'john'}]}], 'id': [{1: [{'age': 2, 'id': 1, 'name': 'atom'}], 2: [{'age': 26, 'id': 2, 'name': 'shylock'}], 3: [{'age': 26, 'id': 3, 'name': 'john'}]}]}
----------
{'age': [{25: [{'age': 25, 'id': 1, 'name': 'atom'}]}, {26: [{'age': 26, 'id': 1, 'name': 'shylock'}, {'age': 26, 'id': 3, 'name': 'john'}]}], 'id': [{1: [{'age': 25, 'id': 1, 'name': 'atom'}, {'age': 26, 'id': 1, 'name': 'shylock'}]}, {3: [{'age': 26, 'id': 3, 'name': 'john'}]}]}