python字典操作 EasyDict（）作用

绝地灬酷狼 2021-12-21 15:15 530阅读 0赞

easydict的作用：可以使得以属性的方式去访问字典的值！

>>>from easydict import EasyDict as edict
    >>> d = edict({ 'foo':3, 'bar':{ 'x':1, 'y':2}})
    >>> d.foo
    3
    >>> d.bar.x
    1
    
    >>> d = edict(foo=3)
    >>> d.foo
    3

解析json目录时很有用

>>> from easydict import EasyDict as edict
    >>> from simplejson import loads
    >>> j = """{ "Buffer": 12, "List1": [ {"type" : "point", "coordinates" : [100.1,54.9] }, {"type" : "point", "coordinates" : [109.4,65.1] }, {"type" : "point", "coordinates" : [115.2,80.2] }, {"type" : "point", "coordinates" : [150.9,97.8] } ] }"""
    >>> d = edict(loads(j))
    >>> d.Buffer
    12
    >>> d.List1[0].coordinates[1]
    54.9

也可以这样用

>>> d = EasyDict()
    >>> d.foo = 3
    >>> d.foo
    3
    >>> d = EasyDict(log=False)
    >>> d.debug = True
    >>> d.items()
    [('debug', True), ('log', False)]
    
    >>> class Flower(EasyDict):
    ...     power = 1
    ...
    >>> f = Flower({ 'height': 12})
    >>> f.power
    1
    >>> f['power']
    1

官方例子

Help on class EasyDict in module easydict:
    
    class EasyDict(__builtin__.dict)
    Get attributes
    
    >>> d = EasyDict({ 'foo':3})
    >>> d['foo']
    3
    >>> d.foo
    3
    >>> d.bar
    Traceback (most recent call last):
    ...
    AttributeError: 'EasyDict' object has no attribute 'bar'
    
    Works recursively
    
    >>> d = EasyDict({ 'foo':3, 'bar':{ 'x':1, 'y':2}})
    >>> isinstance(d.bar, dict)
    True
    >>> d.bar.x
    1
    
    Bullet-proof
    
    >>> EasyDict({ })
    { }
    >>> EasyDict(d={ })
    { }
    >>> EasyDict(None)
    { }
    >>> d = { 'a': 1}
    >>> EasyDict(**d)
    { 'a': 1}
    
    Set attributes
    
    >>> d = EasyDict()
    >>> d.foo = 3
    >>> d.foo
    3
    >>> d.bar = { 'prop': 'value'}
    >>> d.bar.prop
    'value'
    >>> d
    { 'foo': 3, 'bar': { 'prop': 'value'}}
    >>> d.bar.prop = 'newer'
    >>> d.bar.prop
    'newer'
    
    
    Values extraction
    
    >>> d = EasyDict({ 'foo':0, 'bar':[{ 'x':1, 'y':2}, { 'x':3, 'y':4}]})
    >>> isinstance(d.bar, list)
    True
    >>> from operator import attrgetter
    >>> map(attrgetter('x'), d.bar)
    [1, 3]
    >>> map(attrgetter('y'), d.bar)
    [2, 4]
    >>> d = EasyDict()
    >>> d.keys()
    []
    >>> d = EasyDict(foo=3, bar=dict(x=1, y=2))
    >>> d.foo
    3
    >>> d.bar.x
    1
    
    Still like a dict though
    
    >>> o = EasyDict({ 'clean':True})
    >>> o.items()
    [('clean', True)]
    
    And like a class
    
    >>> class Flower(EasyDict):
    ...     power = 1
    ...
    >>> f = Flower()
    >>> f.power
    1
    >>> f = Flower({ 'height': 12})
    >>> f.height
    12
    >>> f['power']
    1
    >>> sorted(f.keys())
    ['height', 'power']

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转载：[https://blog.csdn.net/m0\_38082419/article/details/79079516][https_blog.csdn.net_m0_38082419_article_details_79079516]

[https_blog.csdn.net_m0_38082419_article_details_79079516]: https://blog.csdn.net/m0_38082419/article/details/79079516