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While working on a data-cleaning project for a retail company in the USA, I had to remove certain unwanted values from a Python list. At first glance, this sounds like a simple task. But as I dug deeper, I realized there are multiple ways to remove an element from a list in Python. Each method … Read more >>
As a Python developer, I was working on a project where I needed to count the number of words in a large text file. I’ve often had to analyze text data: whether it’s customer feedback, product reviews, or log files. In this article, I’ll share how I personally perform a word count in Python. I’ll … Read more >>
Recently, I was working on a project where I needed to merge two separate lists into a dictionary in Python. At first, I thought of using the zip() function or the dict() constructor, but then I realized I wanted to do it without relying on any built-in shortcuts. I often find myself exploring problems like … Read more >>
To iterate through a dictionary in Python and get both parts, loop over .items(): Looping over the dictionary on its own gives you the keys and nothing else, which is the detail most people trip over first. Below: the four ways to loop, sorting as you go, nested dictionaries, and the RuntimeError that appears when … Read more >>
While working on a project that involved analyzing customer purchase data in the USA, I had to keep track of how many times each product was bought. I quickly realized that the best way to do this in Python was by using a dictionary. Dictionaries in Python are powerful because they allow me to map … Read more >>
When I first started working with Python lists more than a decade ago, one of the most confusing things I faced was appending one list to another. Over the years, I’ve learned multiple ways to append one list to another in Python without nesting. In this tutorial, I’ll walk you through these methods step by … Read more >>
datetime.strptime converts a string to a datetime in Python, using a format that describes your text exactly: Reach for fromisoformat whenever the text is already ISO 8601. It needs no format string and it is dramatically faster. All output below is from real runs on Python 3.12.5 on Windows. Converting a string to datetime with … Read more >>
I was working on a project where I had to initialize a Python dictionary with default values for multiple keys. At first, I thought there would be just one easy way to do it. But as I explored deeper, I realized Python offers several clean and practical options. In this tutorial, I’ll share the exact … Read more >>
When I first started working with Python more than ten years ago, I quickly realized how important strings were. Almost every project I worked on involved text in some way. I’ve explored many different ways to create strings in Python. Some methods are simple and quick, while others give you more flexibility. In this tutorial, … Read more >>
Recently, I was working on a Python project where I needed to search for a key based on its value in a dictionary. Since dictionaries are one of the most powerful and frequently used data structures in Python, I decided to explore different ways to solve this problem. In this tutorial, I’ll share five simple … Read more >>
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