When it is required to sort a list of dictionaries based on the sum of their values, a method is defined that uses the ‘sum’ method to determine the result.
Below is a demonstration of the same −
Example
def sum_value(row):
return sum(list(row.values()))
my_dict = [{21 : 13, 44 : 35, 34 : 56}, {11 : 75, 70 : 19, 39 : 70}, {1 : 155}, {48 : 29, 17 : 53}]
print("The dictionary is :")
print(my_dict)
my_dict.sort(key = sum_value)
print("The result is :")
print(my_dict)Output
The dictionary is :
[{34: 56, 44: 35, 21: 13}, {11: 75, 70: 19, 39: 70}, {1: 155}, {48: 29, 17: 53}]
The result is :
[{48: 29, 17: 53}, {34: 56, 44: 35, 21: 13}, {1: 155}, {11: 75, 70: 19, 39: 70}]
Explanation
A method named 'sum_value' is defined that takes row as parameter and returns the sum of the row values using the ‘.values’ and ‘sum’ method.
A dictionary of integers is defined and is displayed on the console.
The dictionary is sorted and the method is called by passing the key as the previously defined value.
This is the output that is displayed on the console.