Category Archive for "Python"

Asking the user for input until they give a valid response

When writing a program that accepts user input, it is important to validate the input to ensure that it meets the required criteria. In the example provided, the program asks the u...

How to test multiple variables for equality against a single value?

If you want to compare multiple variables to a single value in Python and perform specific actions based on the comparison results, there are several approaches you can take. In th...

How slicing in Python works

Python's slice notation allows you to extract a portion of a sequence, such as a list, string, or tuple. It provides a concise way to create sublists or substrings. I...

Pandas Merging 101

Merging basics - basic types of joins When working with pandas, merging DataFrames is a common operation that allows you to combine data from different sources based on common col...

"Least Astonishment" and the Mutable Default Argument

Python is a powerful and flexible programming language, but it can also have some unexpected behavior that can be confusing, especially for newcomers. One such issue is the behavio...

How to Clone a List in Python to Avoid Unexpected Changes

In Python, lists are mutable objects, which means they can be modified after assignment. One common issue that developers face is that when they assign a list to a new variable usi...

How to Read Inputs as Numbers in Python

In Python, when you use the input() function to read user inputs, the values are always stored as strings. This is because the input() function returns a string. To perform mathem...

How to Remove Items from a List While Iterating?

Iterating over a list of tuples in Python and removing certain items that meet certain criteria can be a bit tricky. In this article, we will explore several approaches to solve th...

How to Flatten a List of Lists in Python

If you have a list of lists in Python and you want to flatten it (i.e., convert it into a single flat list), there are several approaches you can take. In this article, we will exp...

How to Split a List into Equally-Sized Chunks in Python

Have you ever had a situation where you needed to split a list into equally-sized chunks in your Python program? In this article, we'll explore various methods to solve this proble...