Python - 如果某事为真，则将变量分配为一个字典或另一个字典答案

【问题标题】：Python - Assign variable as one dictionary or another if something is truePython - 如果某事为真，则将变量分配为一个字典或另一个字典
【发布时间】：2021-05-11 18:19:31
【问题描述】：

如果我有两个字典，并且我想根据外部输入将其分配给另一个变量，是否有更 Pythonic 的方式来做呢？

dict_one = {"id": 1, "content": "content of the first dict"}

dict_two = {"id": 2, "content": "content of the second dict"}

dict_three = {"id": 3, "content": "content of the third dict"}

#insert many more dicts....

outside_input = 1

if outside_input == 1:
    result = dict_one
elif outside_input == 3:
    result = dict_three

【问题讨论】：

标签： python dictionary variable-assignment

【解决方案1】：

如果没有关于您的问题的更多详细信息，我可能会使用嵌套字典，例如：

dict_of_dicts = {
        'dict_one': {"id": 1, "content": "content of the first dict"},
        'dict_two': {"id": 2, "content": "content of the second dict"}        
        }

outside_input = 'dict_one'

result = dict_of_dicts[outside_input]

或者，如果 dicts 中的 id 刚好存在，出于这个原因，您可以将其拉到外面作为减少冗余的键：

dict_of_dicts = {
        1: {"content": "content of the first dict"},
        2: {"content": "content of the second dict"}        
        }

或第三种方式，但在搜索特定字典时速度较慢

list_of_dicts = [
        {"id": 1, "content": "content of the first dict"},
        {"id": 2, "content": "content of the second dict"}      
        ]
outside_input = 'dict_one'

result = [dict for dict in list_of_dicts.items() if dict['id'] == outside_input]

最后一个效率低下，仅出于学术原因：D

【讨论】：

【解决方案2】：

我猜你可以有另一本字典

allDict = {1:{"id": 1, "content": "content of the first dict"},2:{"id": 2, "content": "content of the second dict"},3:{"id": 3, "content": "content of the third dict"}}

out = 1
result = allDict.get(out)

【讨论】：

【解决方案3】：

dict_one = {"id": 1, "content": "content of the first dict"}

dict_two = {"id": 2, "content": "content of the second dict"}

dict_three = {"id": 3, "content": "content of the third dict"}

dicts = {1: dict_one, 2: dict_two, 3: dict_three}

outside_input = 1

result = dicts.get(outside_input)

【讨论】：