How to Find Max Value in Dictionary

Problem Formulation and Solution Overview In this article, you’ll learn how to find the maximum value in a Python dictionary. To make it more fun, we have the following running scenario: You are in the market for a car and have narrowed the search to a few possibilities. Your final choice will be based on … Read more

How to Read a Dictionary from a File

Problem Formulation and Solution Overview In this article, you’ll learn how to read in a Dictionary file and format the output in Python. To make it more fun, we have the following running scenario: Jeff Noble, a Marine Archeologist, has put together a team to search for shipwrecks each month. This month, they will search … Read more

Get Key by Value in The Dictionary

[toc] Problem Statement: How to get a key by its value in a dictionary in Python Example: We have a clear idea about the problem now. So without further delay, let us dive into the solutions to our question. 🎬Video Walkthrough Solution 1: Using dict.items() Approach: One way to solve our problem and extract the … Read more

Delete an Element in a Dictionary | Python

[toc] Summary: Use these methods to delete a dictionary element in Python –(1) del dict[‘key’](2) dict.clear(‘key’)(3) Use a dictionary comprehension(4) Use a for loop to eliminate the key Problem: Given a Python dictionary. How to delete an element from the dictionary? Example: A Quick Recap to Python Dictionaries A Python dictionary is a data structure … Read more

Python Dict Length of Values

This article addresses two problems: Given is a dictionary and a single key. How to get the length of the value associated with the key in the dictionary? Given is a dictionary. How to get the total length, summing over the length of all values in the dictionary? Let’s dive into these two problems and … Read more

How To Apply A Function To Each Element Of A Dictionary?

This article shows you how to apply a given function to each element of a Python dictionary. The most Pythonic way to apply a function to each element of a Python dict is combining the dictionary comprehension feature and the dict.items() method like so: {k:f(v) for k,v in dict.items()} Note: All the solutions provided below … Read more

Python __missing__() Magic Method

Syntax object.__missing__(self, key) The __missing__(self, key) method defines the behavior of a dictionary subclass if you access a non-existent key. More specifically, Python’s __getitem__() dictionary method internally calls the __missing__() method if the key doesn’t exist. The return value of __missing__() is the value to be returned when trying to access a non-existent key. We … Read more