python中的词典比较

Question

两本词典如下：

dict1 = {'providers': 'aetna, united_health, cardinal'}
dict2 = {'aetna': ['13e2345', '13e2346'], 'bcbs': ['901E12'], 'united_health': []}

我需要比较两个字典和打印数据从dict2如果匹配的数据dict1。你知道吗

预期产量：

{'aetna': ['13e2345', '13e2346'], 'united_health': []}

Answer 1

您可以使用简单的词典理解：

dict1 = {'providers': 'aetna, united_health'}
dict2 = {'aetna': ['13e2345', '13e2346'], 'bcbs': ['901E12'], 'united_health': []}

providers = set(dict1['providers'].split(', '))
new_dict2 = {k: v for k, v in dict2.items() if k in providers}
print(new_dict2)

输出：

{'aetna': ['13e2345', '13e2346'], 'united_health': []}

Answer 2

dict1 = {'providers': 'aetna, united_health'}
dict2 = {'aetna': ['13e2345', '13e2346'], 'bcbs': ['901E12'], 'united_health': []}

result = {key: dict2.get(key, []) for key in dict1.get('providers').split(', ')}

输出：

{'aetna': ['13e2345', '13e2346'], 'united_health': []}