合并多个字典或映射对象

zltzlt

>>> from collections import ChainMap
>>> a = {'x': 3, 'z': 4}
>>> b = {'y': 5, 'z': 3}
>>> c = ChainMap(a, b)
>>> print(c)
ChainMap({'x': 3, 'z': 4}, {'y': 5, 'z': 3})
>>> print(dict(c))
{'y': 5, 'z': 4, 'x': 3}
>>> c['x']
3
>>> c['y']
5
>>> c['z']
4
>>> list(c.keys())
['y', 'z', 'x']
>>> list(c.values())
[5, 4, 3]

fan1993423

好