如何访问元组字典的特定元素(How to access specific element of dictionary of tuples)

如何访问元组字典的特定元素(How to access specific element of dictionary of tuples)

我想在元组字典中访问元组的特定元素。 假设每个键都有一个带有唯一键的字典和一个带有三个值的元组。 我想编写一个迭代器，为字典中的每个元素打印一个元组中的每三个项目。

例如

dict = {"abc":(1,2,3), "bcd":(2,3,4), "cde", (3,4,5)} for item in dict: print item[2]

但这会回来

c d e

我哪里错了？

I want to access a specific element of a tuple in a dictionary of tuples. Let's say that I have a dictionary with a unique key, and a tuple with three values, for each key. I want to write a iterator the prints every third item in a tuple for every element in the dictionary.

For example

dict = {"abc":(1,2,3), "bcd":(2,3,4), "cde", (3,4,5)} for item in dict: print item[2]

But this returns

c d e

Where am I going wrong?

最满意答案

for item in dict: print dict[item][2]

此外，您不应该在内置后命名任何内容，因此请将字典命名为'd'或'dict'之外'dict'其他内容

for item in dict:中的for item in dict.keys()相同。

或者，你可以这样做：

for item in dict.values(): print item[2] for item in dict: print dict[item][2]

Also, you should not name anything after a built-in, so name your dictionary 'd' or something other than 'dict'

for item in dict: does the same thing as for item in dict.keys().

Alternatively, you can do:

for item in dict.values(): print item[2]