Python3 six - 属性错误：自定义对象没有属性"items"

Question

i有一个Case类型的dict对象列表，该对象使用dict启动。在Python2中运行时，我可以循环浏览键和值，以促进我使用six库的两个版本。

class Case:
    def __init__(self, obj):
        properties = {}
        # standardize Boolean properties
        true_values = ['1', 1, True, 'yes', 'Yes', 'YES']
        false_values = ['0', 0, False, 'no', 'No', 'NO']
        for (k, v) in iteritems(properties):
            # standardize TRUE values
            if v in true_values:
                properties[k] = True
            # standardize FALSE values
            elif v in false_values:
                properties[k] = False
            # keep String values
            elif isinstance(v, str):
                continue
        # remove NULL values
        filtered = {k: v for (k, v) in iteritems(properties) if v != None}
        # set Case instance attribute for each property
        for (k, v) in iteritems(filtered):
            setattr(self, k, v)
    def __iter__(self):
        return self
    def __getitem__(self, key):
        return self.__dict__.get(key, None)
    def to_json(self):
        return json.dumps(self, default=lambda o: o.__dict__)

当我浏览此列表时，尽管遵循six文档，但我还是会得到一个属性。

i通过上述对象的列表进行迭代：

from six import iteritems
def transform(case_list):
    for case in case_list:
        for (key, value) in iteritems(case): #crashes here
            #do stuff

，但每次都会获取一个属性：

Traceback (most recent call last):
File "app/run.py", line 134, in <module>
main()
File "/home/user/other.py", line 55, in transform
for (key, value) in iteritems(case):
File "/home/user/env/lib/python3.4/site-packages/six-1.10.0-py3.4.egg/six.py", line 581, in iteritems
return iter(d.items(**kw))
AttributeError: 'Case' object has no attribute 'items'

我用python3 app/run.py称呼它。为什么它不识别峰值？

Answer 1

我通过在案例类中添加items()方法来找到解决方案：

    def items(self):
        return zip(self.__dict__.values(), self.__dict__.keys())