Bijay Kumar 
As a developer working with data in Python, I often need to modify values in a DataFrame column. Whether it’s correcting errors, applying transformations, or updating based on conditions, knowing how to update column values efficiently is an essential skill for any data professional. In this tutorial, I’ll walk you through various methods to update … Read more >>
While I was working on a data analysis project where I needed to convert Unix timestamps (stored as integers) to readable datetime objects. The challenge was that these integers represented time in different formats, some were Unix timestamps in seconds, others in milliseconds, and some were just date representations like 20231105 for November 5, 2023. … Read more >>
When working with data in Python, I often need to convert DataFrames to JSON arrays for web applications, API integration, or data interchange. Converting Pandas DataFrames to JSON format is a common requirement that I encounter regularly in my projects. In this tutorial, I will show you multiple methods to convert a DataFrame to a … Read more >>
While working on a feature to send timed reminders, I needed to add a few minutes to a given date in my TypeScript app. For this, I first tried using the built-in setMinutes method, but soon realized it could lead to issues when reusing the original date object. I explored other approaches to avoid this … Read more >>
While developing an online shopping application, a developer needs to manage different order statuses, such as Pending, Shipped, Delivered, and Cancelled. To keep the code clean and consistent, they create a TypeScript enum called OrderStatus and use it inside a class named Order. In this tutorial, we will learn how to effectively use TypeScript enums … Read more >>
Recently, I was working on a data processing project where I needed to send pandas DataFrame data to a web API. The issue is, I had to convert my DataFrame to JSON format first. This is a common requirement when working with APIs, building web applications, or simply storing data in a universally readable format. … Read more >>
Recently, I was working on a data analysis project where I needed to extract and manipulate index values from a Pandas DataFrame. As I dug into the problem, I realized that accessing index values isn’t always as simple as it seems. Pandas provides several useful methods to retrieve index values, but knowing which approach to … Read more >>
As a Python developer working with Pandas DataFrames, especially after importing data from CSV files, you might come across unwanted “Unnamed” columns that appear out of nowhere. These columns can mess up your data and make analysis more difficult. In this article, I will share three proven methods to drop these unwanted “Unnamed” columns from … Read more >>
When analyzing data in Python, I often need to see relationships between categorical variables. Creating cross-tabulations with percentage values has been one of my go-to techniques for years. While I was working on a project analyzing voter demographics, I needed to see the percentage breakdown across different categories. The solution? Pandas crosstab with normalization. In … Read more >>
While working with data in Python, the pandas library is an indispensable tool that I’ve relied on for years. One of the most common operations in data cleaning and preparation is removing unwanted rows or columns from your dataset. This is where the DataFrame drop() function comes into play. Whether you’re dealing with missing values, … Read more >>
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