使用不同字典中的值连接字典

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

dict1.update(dict2)
print(dict1)  # 输出: {'a': 1, 'b': 3, 'c': 4}

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

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

from collections import ChainMap

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

merged_dict = ChainMap(dict1, dict2)
print(merged_dict)  # 输出: ChainMap({'a': 1, 'b': 2}, {'b': 3, 'c': 4})
print(dict(merged_dict))  # 输出: {'a': 1, 'b': 2, 'c': 4}

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

merged_dict = dict1.copy()
for key, value in dict2.items():
    if key in merged_dict:
        merged_dict[key] = [merged_dict[key], value]  # 合并值为列表
    else:
        merged_dict[key] = value

print(merged_dict)  # 输出: {'a': 1, 'b': [2, 3], 'c': 4}