Coding Challenge 💬 Challenge: Given a string. How to find the longest palindrome in the string? For comprehensibility, allow me to quickly add a definition of the term palindrome: 💡 Definition: A palindrome is a sequence of characters that reads the same backward as forward such as ‘madam’, ‘anna’, or ‘101’. This article wants to … Read more
Coding Challenge 💬 Challenge: How to Find the Longest Line or String From a File in Python? Given the following text file: Depending on what exactly you’re looking for, you want to find the longest string word (A) or the longest line (B) in the file. Let’s dive into both variants next. Method 1: Find … 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 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
Problem Formulation 💬 How to print a list without quotes in Python? Given a Python list of strings such as [‘1’, ‘2’, ‘3’]. If you print the list to the shell using print([‘1’, ‘2’, ‘3’]), the output is enclosed in square brackets and the strings have quotes like so: “[‘1’, ‘2’, ‘3’]”. This article will … Read more
Problem Formulation Given a Python list of elements. If you print the list to the shell using print([1, 2, 3]), the output is enclosed in square brackets and separated by commas like so: “[1, 2, 3]”. But you want the list without brackets and commas like so: 1 2 3. How to print the list … Read more
Problem Formulation and Solution Overview In this article, you’ll learn how to print a string and an integer together in Python. To make it more fun, we have the following running scenario: The Finxter Academy has decided to send its users an encouraging message using their First Name (a String) and Problems Solved (an Integer). … Read more
Use Python’s built-in min() function with a key argument to find the shortest string in a list. Call min(lst, key=len) to return the shortest string in lst using the built-in len() function to associate the weight of each string—the shortest string will be the minimum. Problem Formulation Given a Python list of strings. Find the … Read more
Use Python’s built-in max() function with a key argument to find the longest string in a list. Call max(lst, key=len) to return the longest string in lst using the built-in len() function to associate the weight of each string—the longest string will be the maximum. Problem Formulation Given a Python list of strings. Find the … Read more