（完全解决）Python字典dict如何由键key索引转化为点.dot索引

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背景

For example, instead of writing mydict[‘val’], I’d like to write mydict.val.

解决方案

基础版

I’ve always kept this around in a util file. You can use it as a mixin on your own classes too.

class dotdict(dict):"""dot.notation access to dictionary attributes"""__getattr__ = dict.get__setattr__ = dict.__setitem____delattr__ = dict.__delitem__mydict = {'val':'it works'}
nested_dict = {'val':'nested works too'}
mydict = dotdict(mydict)
print(mydict.val)
# 'it works'mydict.nested = dotdict(nested_dict)
print(mydict.nested.val)
# 'nested works too'

这个时候嵌套字典行不行呢？也就是字典里的某一个值又是一个字典，不行！！！！！！

dict1={'val':'it works'}
yourdict={'high':dict1}
yourdict=dotdict(yourdict)
print(yourdict.high.val)

升级版

class DotDict(dict): """dot.notation access to dictionary attributes""" def __getattr__(*args):val = dict.get(*args) return DotDict(val) if type(val) is dict else val      __setattr__ = dict.__setitem__     __delattr__ = dict.__delitem__ 

下面就成功了。

dict1={'val':'it works'}
yourdict={'high':dict1}
yourdict=DotDict(yourdict)
print(yourdict.high.val)
#it works

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