#值复制 dic1 = {'x': 1, 'y': 2 } dic2 = {'y': 3, 'z': 4 } merged1 = {**dic1, **dic2} # {'x': 1, 'y': 3, 'z': 4} #指针引用 from collections import ChainMap merged2 = ChainMap(dic1,dic2) print(merged2) # ChainMap({'x': 1, 'y': 2}, {'y': 3, 'z': 4})