如何在Python中实现关联数组（而不是字典）？ [英] How to implement associative array (not dictionary) in Python?

问题描述

我想在Python中打印一本字典：

I trying to print out a dictionary in Python:

Dictionary = {"Forename":"Paul","Surname":"Dinh"}
for Key,Value in Dictionary.iteritems():
  print Key,"=",Value

虽然项目Forename是首先列出的，但Python 中的字典似乎按照值排序，所以结果是这样的：

Although the item "Forename" is listed first, but dictionaries in Python seem to be sorted by values, so the result is like this:

Surname = Dinh
Forename = Paul

如何在代码中以相同的顺序打印出这些内容，或在中附加项目时的顺序（不按值或按键分类）？

How to print out these with the same order in code or the order when items are appended in (not sorted by values nor by keys)?

推荐答案

您可以使用元组列表（或列表列表）。如下：

You can use a list of tuples (or list of lists). Like this:

Arr= [("Forename","Paul"),("Surname","Dinh")]
for Key,Value in Arr: 
    print Key,"=",Value

Forename = Paul
Surname = Dinh

您可以使用以下语言制作字典：

you can make a dictionary out of this with:

Dictionary=dict(Arr)

正确排序的键如下所示：

And the correctly sorted keys like this:

keys = [k for k,v in Arr]

然后这样做：

for k in keys: print k,Dictionary[k]

但我同意您的问题的意见：将键的排序是不容易的

but I agree with the comments on your question: Would it not be easy to sort the keys in the required order when looping instead?

编辑：（谢谢Rik Poggi）， OrderedDict 为你做这个：

(thank you Rik Poggi), OrderedDict does this for you:

od=collections.OrderedDict(Arr)
for k in od: print k,od[k]

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