如何将多个字典合并为一个字典？

dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}
dict3 = {'d': 5}

merged_dict = {}
for d in [dict1, dict2, dict3]:
    merged_dict.update(d)

print(merged_dict)  # 输出: {'a': 1, 'b': 3, 'c': 4, 'd': 5}

dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}
dict3 = {'d': 5}

merged_dict = {**dict1, **dict2, **dict3}
print(merged_dict)  # 输出: {'a': 1, 'b': 3, 'c': 4, 'd': 5}

from collections import ChainMap

dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}
dict3 = {'d': 5}

merged_dict = ChainMap(dict1, dict2, dict3)
print(dict(merged_dict))  # 输出: {'a': 1, 'b': 3, 'c': 4, 'd': 5}

dict1 = {'a': 1, 'b': 2}
dict2 = {'b': 3, 'c': 4}
dict3 = {'d': 5}

merged_dict = {k: v for d in [dict1, dict2, dict3] for k, v in d.items()}
print(merged_dict)  # 输出: {'a': 1, 'b': 3, 'c': 4, 'd': 5}