Problem Formulation and Solution Overview This article will show you how to apply a function to a List in Python. To make it more interesting, we have the following running scenario: As a Python assignment, you have been given a List of Integers and asked to apply a function to each List element in various … 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
Problem Formulation 💬 Challenge: Given a Python list of strings and a query string. Find the strings that partially match the query string. Example 1: Input: [‘hello’, ‘world’, ‘python’] and ‘pyth’ Output: [‘python’] Example 2: Input: [‘aaa’, ‘aa’, ‘a’] and ‘a’ Output: [‘aaa’, ‘aa’, ‘a’] Example 3: Input: [‘aaa’, ‘aa’, ‘a’] and ‘b’ Output: [] … Read more
Problem Formulation and Solution Overview This article will show you how to add days to a Pandas DataFrame Date column. To make it more interesting, we have the following running scenario: CheckersTV is a new channel offering streaming news and games. They have a large subscriber base, each paying a monthly fee of $12.99. For … Read more
Problem Formulation and Solution Overview This article will show you how to find the most common element in a NumPy Array. To make it more interesting, we have the following running scenario: Carrie heard that Creative Prints is hiring a Python coder. They require the interviewee to answer several coding questions: one is to provide … Read more
Problem Formulation and Solution Overview This article will show you how to find the most common element in a Python Dictionary. However, since all Dictionary Keys are unique, this article focuses on searching for the most common Dictionary Value. To make it more fun, we have the following running scenario: Marty Smart, a Math Teacher … Read more
Problem Formulation and Solution Overview This article will show you how to find the most common element in a Pandas Column. To make it more interesting, we have the following running scenario: You have been provided with a downloadable CSV file containing crime statistics for the San Diego area, including their respective NCIC Crime Codes. … Read more
Problem Formulation Consider the following minimal example where a TypeError: ‘float’ object is not subscriptable occurs: This yields the following output: Solution Overview Python raises the TypeError: ‘float’ object is not subscriptable if you use indexing or slicing with the square bracket notation on a float variable that is not indexable. However, the float class … Read more
The most Pythonic way to convert a list of floats fs to a list of strings is to use the one-liner fs = [str(x) for x in fs]. It iterates over all elements in the list fs using list comprehension and converts each list element x to a string value using the str(x) constructor. This … Read more
Problem Formulation and Solution Overview This article will show you how to find the most common element in a Python string. To make it more interesting, we have the following running scenario: Sven, a Photographer, turned Python Coder, was called for an interview at Edge IT. Sven thought the interview was going well until he … Read more
Do you encounter the following error message? TypeError: NoneType is not subscriptable You’re not alone! This short tutorial will show you why this error occurs, how to fix it, and how to never make the same mistake again. So, let’s get started! Summary Python raises the TypeError: NoneType is not subscriptable if you try to … Read more
Problem Formulation Say, you’re me 👱♂️ five minutes ago, and you want to create a Matplotlib plot using the following (genius) code snippet: If you run this code, instead of the desired plot, you get the following TypeError: ‘AxesSubplot’ object is not subscriptable: 💬 Question: How to resolve the TypeError: ‘AxesSubplot’ object is not subscriptable … Read more