Python连接字典键

dict1 = {'a': 1, 'b': 2, 'c': 3}
dict2 = {'c': 4, 'd': 5, 'e': 6}

# 合并所有键
all_keys = set(dict1.keys()).union(set(dict2.keys()))
print("合并所有键:", all_keys)

# 去重键
unique_keys = set(dict1).keys() & set(dict2).keys()
print("去重键:", unique_keys)

# 按条件合并键（例如，只合并值为整数的键）
filtered_keys = {k for d in [dict1, dict2] for k, v in d.items() if isinstance(v, int)}
print("按条件合并键:", filtered_keys)

from collections import ChainMap

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

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

import multiprocessing as mp

def merge_keys(dicts):
    all_keys = set()
    for d in dicts:
        all_keys.update(d.keys())
    return all_keys

dicts = [{'a': 1, 'b': 2}, {'c': 3, 'd': 4}, {'e': 5, 'f': 6}]
with mp.Pool(mp.cpu_count()) as pool:
    result = pool.map(merge_keys, [dicts])
    print(result)  # 输出: [{'a', 'b', 'c', 'd', 'e', 'f'}]