Python – Sort List by Dictionary values

Sometimes while working with Python dictionary, we can have problem in which we need to perform a sort of list according to corresponding value in dictionary. This can have application in many domains, including data and web development. Lets discuss certain ways in which this task can be performed.

Method #1 : Using sorted() + key + lambda
The combination of above functions can be used to solve this problem. In this, we perform the task of sorting using sorted(). The lambda function is used to get key’s values.

filter_none

edit
close

play_arrow

link
brightness_4
code

# Python3 code to demonstrate working of 
# Sort List by Dictionary values
# Using sorted() + key + lambda
  
# initializing list
test_list = ['gfg', 'is', 'best']
  
# initializing Dictionary
test_dict = {'gfg' : 56, 'is' : 12, 'best' : 76}
  
# printing original list
print("The original list is : " + str(test_list))
  
# printing original dictionary
print("The original dictionary is : " + str(test_dict))
  
# Sort List by Dictionary values
# Using sorted() + key + lambda
res = sorted(test_list, key = lambda ele: test_dict[ele])
  
# printing result 
print("The list after sorting : " + str(res)) 

chevron_right


Output :

The original list is : ['gfg', 'is', 'best']
The original dictionary is : {'best': 76, 'gfg': 56, 'is': 12}
The list after sorting : ['is', 'gfg', 'best']

 

Method #2 : Using sorted() + key + get()
This method performs the task in similar way as above method. The difference is that it accesses values get().

filter_none

edit
close

play_arrow

link
brightness_4
code

# Python3 code to demonstrate working of 
# Sort List by Dictionary values
# Using sorted() + key + get()
  
# initializing list
test_list = ['gfg', 'is', 'best']
  
# initializing Dictionary
test_dict = {'gfg' : 56, 'is' : 12, 'best' : 76}
  
# printing original list
print("The original list is : " + str(test_list))
  
# printing original dictionary
print("The original dictionary is : " + str(test_dict))
  
# Sort List by Dictionary values
# Using sorted() + key + get()
res = sorted(test_list, key = test_dict.get)
  
# printing result 
print("The list after sorting : " + str(res)) 

chevron_right


Output :

The original list is : ['gfg', 'is', 'best']
The original dictionary is : {'best': 76, 'gfg': 56, 'is': 12}
The list after sorting : ['is', 'gfg', 'best']



My Personal Notes arrow_drop_up

Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.