Related Articles
Python – How to Sort a Dictionary by Kth Index Value
• Last Updated : 03 Jul, 2020

While working with Python, one might come to a problem in which one needs to perform a sort on dictionary based on Kth index of value list. This can be typically in case of scoring or web development. Let’s discuss a method by which this task can be performed.

Input : test_dict = {‘gfg’ : [5, 6, 7], ‘is’ : [1, 4, 7], ‘best’ : [8, 3, 1]}, K = 2
Output : [(‘best’, [8, 3, 1]), (‘gfg’, [5, 6, 7]), (‘is’, [1, 4, 7])]

Input : test_dict = {‘gfg’ : [5, 6, 7], ‘is’ : [1, 4, 7], ‘best’ : [8, 3, 1]}, K = 0
Output : [(‘is’, [1, 4, 7]), (‘gfg’, [5, 6, 7]), (‘best’, [8, 3, 1])]

Method : Using `sorted()` + lambda
The combination of above functions can be used to solve this problem. In this, we perform sort using sorted() and lambda function is used to drive Kth index logic.

 `# Python3 code to demonstrate working of ``# Sort Dictionary by Kth Index Value``# Using sorted() + lambda`` ` `# initializing dictionary``test_dict ``=` `{``'gfg'` `: [``5``, ``6``, ``7``],``             ``'is'` `: [``1``, ``4``, ``7``],``             ``'best'` `: [``8``, ``3``, ``1``]}`` ` `# printing original dictionary``print``(``"The original dictionary is : "` `+` `str``(test_dict))`` ` `# initializing K``K ``=` `1`` ` `# Sort Dictionary by Kth Index Value``# Using sorted() + lambda``res ``=` `sorted``(test_dict.items(), key ``=` `lambda` `key: key[``1``][K])`` ` `# printing result ``print``(``"The sorted dictionary : "` `+` `str``(res)) `
Output :

```The original dictionary is : {'gfg': [5, 6, 7], 'is': [1, 4, 7], 'best': [8, 3, 1]}
The sorted dictionary : [('best', [8, 3, 1]), ('is', [1, 4, 7]), ('gfg', [5, 6, 7])]
```

Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course

My Personal Notes arrow_drop_up