Python program to sort a dictionary list based on the maximum value

Python program to sort a dictionary list based on the maximum value

In this tutorial, we will guide you through sorting a list of dictionaries based on the maximum value of each dictionary.

Scenario: Suppose we have a list of dictionaries:

data = [{"a": 10, "b": 15, "c": 7}, {"a": 8, "b": 20, "c": 3}, {"a": 12, "b": 5, "c": 11}]

We aim to sort the data based on the maximum value in each dictionary in descending order. The desired output for the above data would be:

[{"a": 8, "b": 20, "c": 3}, {"a": 10, "b": 15, "c": 7}, {"a": 12, "b": 5, "c": 11}]

Steps:

  1. Use the sorted() function.
  2. For the key function, find the maximum value of each dictionary.
  3. Sort the list in descending order based on the maximum values.

Python Code:

def sort_dicts_based_on_max_value(data): """ Sort a list of dictionaries based on the maximum value of each dictionary. :param data: List of dictionaries. :return: List of dictionaries sorted based on maximum value in descending order. """ # Step 1: Use the `sorted()` function return sorted(data, key=lambda x: max(x.values()), reverse=True) # Example usage: data = [{"a": 10, "b": 15, "c": 7}, {"a": 8, "b": 20, "c": 3}, {"a": 12, "b": 5, "c": 11}] sorted_data = sort_dicts_based_on_max_value(data) for d in sorted_data: print(d)

Explanation:

  • We define a function sort_dicts_based_on_max_value that takes a list of dictionaries named data as input.
  • We use the sorted() function to sort the list.
  • The key parameter of the sorted() function is a lambda function that returns the maximum value of each dictionary using the max() function and the values() method of the dictionary.
  • The reverse=True argument sorts the list in descending order.
  • Finally, the sorted list is returned.
  • The example usage demonstrates how to call the function and print the sorted list.

By leveraging the power of Python's built-in functions like sorted() and max(), this approach provides an effective way to sort a list of dictionaries based on the maximum value.

More Tags

angular-ui-bootstrap apache-spark-1.5 xcode7 subset-sum flying-saucer xorg absolute xquery alter-table network-programming

More Programming Guides

Other Guides

More Programming Examples