Data Science
4 Posts
Handling Sequence Modifications During Iteration in Python: Best Practices
In Python, modifying a sequence like a list while iterating can lead to unexpected results, such as skipping elements or creating infinite loops. This post explains common pitfalls, such as when to use a backward iteration or a new list, and introduces best practices to safely modify sequences during iteration.
Dharambir
12 January 2025
Why Python Dictionaries Are Unordered (and How to Keep Insertion Order)
In Python, dictionaries are unordered by default, unlike C++'s std::map. This post explains how Python dictionaries work, introduces OrderedDict from the collections module to preserve insertion order, and highlights changes in Python 3.6 that ensure insertion order is maintained in dictionaries.
Dharambir
12 January 2025
Optimizing None Checks and Assignments in Python: A Comprehensive Guide
In this guide, we explore the most efficient and Pythonic methods to check for None in Python and assign values to variables. Learn about the is None check, using not, and the elegant or operator approach for cleaner, more efficient code.
Dharambir
10 January 2025
How to Convert a POSIX Timestamp to Datetime in Python: A Step-by-Step Guide
Converting a POSIX timestamp to a human-readable datetime object in Python is a useful skill when working with time data. This guide walks you through the process, from importing the necessary modules to using Python's datetime and time modules to achieve the conversion. By following these steps, you can easily transform raw timestamps into readable date and time formats.
Dharambir
1 January 2025