Problem Formulation and Solution Overview If you print all values from a dictionary in Python using print(dict.values()), Python returns a dict_values object, a view of the dictionary values. The representation prints the values enclosed in a weird dict_values(…) wrapper text, for example: dict_values([1, 2, 3]). Here’s an example: There are multiple ways to change the … Read more
The most Pythonic way to print a dictionary except for one or multiple keys is to filter it using dictionary comprehension and pass the filtered dictionary into the print() function. There are multiple ways to accomplish this and I’ll show you the best ones in this tutorial. Let’s get started! 🚀 👉 Recommended Tutorial: How … Read more
⚔️ Programming Challenge: Given an integer n that could be very high (e.g., n=1000000). How to initialize a Python dictionary of size n that is fast, easy, and efficient? Next, you’ll learn the five main ways to solve this and compare their performance at the end of this article. Interestingly, the winner Method 4 is … Read more
Problem Formulation 💬 Programming Challenge: Given a dictionary where the values are lists of varying sizes. Find and return the shortest list! Here’s an example: Also, you’ll learn how to solve a variant of this challenge. 💬 Bonus challenge: Find only the key that is associated with the shortest list in the dictionary. Here’s an … Read more
Problem Formulation 💬 Programming Challenge: Given a dictionary where the values are lists of varying sizes. Find and return the longest list! Here’s an example: Also, you’ll learn how to solve a variant of this challenge. 💬 Bonus challenge: Find only the key that is associated with the longest list in the dictionary. Here’s an … Read more
Problem Formulation and Solution Overview This article will show you how to check if a Dictionary is empty in Python. Before moving forward, let’s review what a Python Dictionary is. 💡Dictionary Overview: The Python Dictionary is a data structure that houses key:value pairs of data. This data structure does not allow duplicate keys, thus ensuring … Read more
You’ll never guess the most concise way to solve this problem… 🦄 Coding Challenge 💬 Challenge: Given a dictionary with string keys. Get the string key with the minimum number of characters, i.e., the shortest string. A variant of this problem is to get the length of the shortest string — I’ll give you a … Read more
Problem Formulation and Solution Overview This article will show you how to extract a subset from a Dictionary in Python. Our article works with a Dictionary called cars, containing 30 key:value pairs: a name and associated horsepower. 💬 Question: How would we write code to extract a subset from a Dictionary? We can accomplish this … Read more
Summary: You can use one of these methods to delete multiple keys from a dictionary Python –(1) Iterate across the list of keys to be deleted and use the syntax del dict[‘key’](2) Iterate across the list of keys to be deleted and call the dictionary.pop(key)method.(3) Eliminate unrequired keys and reconstruct the original dictionary using a dictionary … Read more
Problem: Given a dictionary and a filter condition. How to filter a dictionary by … … key so that only those (key, value) pairs in the dictionary remain where the key satisfies the condition? … value so that only those (key, value) pairs remain where the value satisfies the condition? In this tutorial, you’ll learn … Read more
Problem Formulation and Solution Overview This article will show you how to get a random entry from a Dictionary in Python. To make it more interesting, we have the following running scenario: 👨🏫 The Plot: Mr. Sinclair, an 8th great Science Teacher, is giving his students a quiz on the first 25 Periodic Table elements. … Read more
You’ll never guess the most concise way to solve this problem… 🦄 Coding Challenge 💬 Challenge: Given a dictionary with string keys. Get the string key with the maximum number of characters, i.e., the longest string. A variant of this problem is to get the length of the longest string — I’ll give you a … Read more