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When I started working with Python lists, I often needed to copy elements from one list to another. At first, I thought it would be as simple as assigning one list to another. But then I learned that an assignment creates a reference, not a true copy. I’ve tried different methods to copy lists in … Read more >>
When I work with text data in Python, I often face situations where I need to format the strings in a list. A common case is when I want to capitalize the first letter of only the first item in the list, while leaving the rest of the items untouched. At first, this might sound … Read more >>
As a developer, while working on a project for a client, I had to build a simple employee management system. The client wanted a web application where they could add new employees, view their details, update them, and delete records when needed. While this sounds like a common requirement, it is the foundation of most … Read more >>
Recently, I worked on a project for a small business in the USA where they needed a web app to manage customer records. The requirement was simple: store customer details in a database, and allow staff to create, read, update, and delete (CRUD) records easily. I knew Django + MySQL would be the perfect stack … Read more >>
While working on a data project, I needed to merge multiple arrays into a single one. At first, I thought it would be simple, but I quickly realized there are many different ways to do it in Python, depending on the type of array I was working with. Over the years, as a Python developer, … Read more >>
I was working on a project where I had to export a dataset from Python into a CSV file so that my team could analyze it in Excel. The dataset was stored in arrays, and the challenge was to quickly and efficiently convert these arrays into a CSV format. If you have ever worked with … Read more >>
When I was working on a project where I had to combine multiple lists of customer data into one. Since I have been programming in Python for more than 10 years, I knew there were several ways to do this. The challenge was not just about joining lists but also about choosing the most efficient … Read more >>
To remove the last character from a string in Python, slice up to -1: Two traps follow from that. Writing text[:-n] with n as a variable empties the string when n is zero, and rstrip removes more characters than you expect. Both are demonstrated below, on Python 3.12.5. Removing the last character with slicing A … Read more >>
I was working on a project where I needed to manage students and the courses they were enrolled in. I quickly realized that a dictionary of sets was the perfect data structure for this. Because a dictionary lets me map each student’s name to their courses, and sets ensure that no duplicate courses are stored. … Read more >>
While I was working on a project, I had to clean up some text data coming from a CSV file. The problem was simple: every string in the file started with an unwanted symbol. At first, I thought there would be a built-in option in Python to remove the first character. But I quickly realized … Read more >>
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