Python 字典在不知道键的情况下获取值
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Dictionary get value without knowing the key
提问by Yunti
In python if I have a dictionary which has a single key value pair and if I don't know what the key might be, how can I get the value?
在 python 中，如果我有一个只有一个键值对的字典，如果我不知道键可能是什么，我怎么能得到这个值？
(and if I have a dict with more than 1 key, value pair, how can I return any one of the values without knowing any of the keys?)
（如果我有一个超过 1 个键、值对的字典，我如何在不知道任何键的情况下返回任何一个值？）
采纳答案by Delgan
You just have to use dict.values().
你只需要使用dict.values().
This will return a list containing all the values of your dictionary, without having to specify any key.
这将返回一个包含字典所有值的列表，而无需指定任何键。
You may also be interested in:
您也可能对。。。有兴趣：
Note that in Python 3, returned value is not actually proper list but view object.
请注意，在 Python 3 中，返回值实际上不是正确的列表，而是视图对象。
回答by cssyphus
Further to Delgan's excellent answer (please upvote his answer instead of this one), here is an example for Python 3 that demonstrates how to use the view object:
除了 Delgan 的出色答案（请对他的答案而不是这个答案投赞成票），这里是 Python 3 的一个示例，它演示了如何使用视图对象：
In Python 3 you can print the values, without knowing/using the keys, thus:
在 Python 3 中，您可以在不知道/使用键的情况下打印值，因此：
for item in my_dict:
print( list( item.values() )[0] )
Example:
例子：
cars = {'Toyota':['Camry','Turcel','Tundra','Tacoma'],'Ford':['Mustang','Capri','OrRepairDaily'],'Chev':['Malibu','Corvette']}
vals = list( cars.values() )
keyz = list( cars.keys() )
cnt = 0
for val in vals:
print('[_' + keyz[cnt] + '_]')
if len(val)>1:
for part in val:
print(part)
else:
print( val[0] )
cnt += 1
OUTPUT:
[_Toyota_]
Camry
Turcel
Tundra
Tacoma
[_Ford_]
Mustang
Capri
OrRepairDaily
[_Chev_]
Malibu
CorvetteThat Py3 docs reference again:
该 Py3 文档再次参考：
https://docs.python.org/3.5/library/stdtypes.html#dict-views
https://docs.python.org/3.5/library/stdtypes.html#dict-views
