Python复杂对象转JSON

在Python对于简单的对象转json还是比较简单的，如下：

import jsond = {'a': 'aaa', 'b': ['b1', 'b2', 'b3'], 'c': 100}json_str = json.dumps(d)print json_str

对于复杂对象，可以使用下面的方法来实现，比如：

import jsonclass Customer:     def __init__(self, name, grade, age, home, office):         self.name = name         self.grade = grade         self.age = age         self.address = Address(home, office)    def __repr__(self):         return repr((self.name, self.grade, self.age, self.address.home, self.address.office)) class Address:    def __init__(self, home, office):        self.home = home        self.office = office    def __repr__(self):         return repr((self.name, self.grade, self.age))customers = [         Customer('john', 'A', 15, '111', 'aaa'),         Customer('jane', 'B', 12, '222', 'bbb'),         Customer('dave', 'B', 10, '333', 'ccc'),         ]json_str = json.dumps(customers, default=lambda o: o.__dict__, sort_keys=True, indent=4)print json_str

结果如下

[    {        "address": {            "home": "111",             "office": "aaa"        },         "age": 15,         "grade": "A",         "name": "john"    },     {        "address": {            "home": "222",             "office": "bbb"        },         "age": 12,         "grade": "B",         "name": "jane"    },     {        "address": {            "home": "333",             "office": "ccc"        },         "age": 10,         "grade": "B",         "name": "dave"    }]

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