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Python如何合并多个字典或映射_python_脚本之家
ChianMap使用原来的字典,它自己不创建新的字典。所以它并不会产生上面所说的结果,比如:1 2 3 4 5 6 7 8 9 >>> a = {'x': 1, 'z': 3 } >>> b = {'y': 2, 'z': 4 } >>> merged = ChainMap(a, b) >>> merged['x'] 1 >>> a['x'] = 42 >>> merged['x'] # Notice...
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