How to skip the subcontext of ChainMap in python
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Description
1. One of the functions of ChainMap is .clients. This property returns the new ChainMap instance, including all the underlying chain mappings except the first.
2. This feature is useful for skipping the first mapping when searching for keys in a given chain mapping.
Example
> > from collections import ChainMap > mom = {"name": "Jane", "age": 31} > dad = {"name": "John", "age": 35} > son = {"name": "Mike", "age": 0} > family = ChainMap (son, mom, dad) > > familyChainMap ({'name':' Mike', 'age': 0}, {' name': 'Jane',' age': 31}), {'name':' John' " 'age': 35}) > > family.parentsChainMap ({' name': 'Jane',' age': 31}, {'name':' John', 'age': 35})
Skip the first dictionary that contains son's data with .dictionary. To some extent, .inventor is the reverse of .new _ child (). The former deletes the dictionary, while the latter adds a new dictionary at the beginning of the list. In both cases, you will get a new chain diagram.
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