如何在python中打印未排序的字典? [英] How to print unsorted dictionary in python?
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问题描述
我在python中有这个dict:
d = {}
d ['b'] ='beta '
d ['g'] ='gamma'
d ['a'] ='alpha'
当我打印dict;
for k,v in d.items():
打印k
我得到这个;
a
b
g
像python自动排序dict!如何获得原始未分类的列表?
Gath
解决方案
CPython实现细节:键和值以任意顺序列出,这是非随机的,因Python实现而异,并且取决于字典的历史的插入和删除。
您可以使用带有2元组的列表:
'pre>
d = [('b','beta'),('g','gamma'),('a','alpha')]
类似但更好的解决方案在韦恩的回答。
I have this dict in python;
d={}
d['b']='beta'
d['g']='gamma'
d['a']='alpha'
when i print the dict;
for k,v in d.items():
print k
i get this;
a
b
g
it seems like python sorts the dict automatically! how can i get the original unsorted list?
Gath
解决方案
CPython implementation detail: Keys and values are listed in an arbitrary order which is non-random, varies across Python implementations, and depends on the dictionary’s history of insertions and deletions.
You could use a list with 2-tuples instead:
d = [('b', 'beta'), ('g', 'gamma'), ('a', 'alpha')]
A similar but better solution is outlined in Wayne's answer.
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