The optparse module in Python is used for parsing command-line options and arguments. It provides a way to handle user input from the command line, making it easier to create scripts and programs that accept various options and arguments. 1. Overview optparse was introduced in Python 2.3 and provides a simple interface for defining and […]
Python Regex: re.search() vs re.findall()
In Python’s re module, re.search() and re.findall() are two commonly used functions for working with regular expressions. They serve different purposes and are used in different scenarios. 1. re.search() The re.search() function searches for the first occurrence of a pattern within a string and returns a Match object if found, or None if the pattern […]
Traceback in Python
A traceback in Python provides information about the sequence of function calls that led to an exception being raised. It is a valuable tool for debugging and understanding where errors occur in your code. 1. Understanding Tracebacks When an exception occurs, Python generates a traceback that includes: File Name: The name of the file where […]
Kadane’s Algorithm in Python
Kadane’s Algorithm is a popular algorithm used to find the maximum sum of a contiguous subarray in an array of integers. It operates in linear time, making it efficient for this problem. 1. Algorithm Explanation Kadane’s Algorithm works by iterating through the array while maintaining two values: current_max: The maximum sum of the subarray that […]
Python Program to Check for Perfect Numbers
A perfect number is a positive integer that is equal to the sum of its proper divisors, excluding itself. For example, 6 is a perfect number because its proper divisors (1, 2, and 3) sum up to 6. 1. Example of Perfect Number Check Here’s a Python program to determine if a given number is […]
Python seek() Method
The seek() method in Python is used to change the file pointer’s position within a file. It is a method of the file object, allowing you to move the pointer to a specific location, which is useful for reading or writing data at different parts of a file. 1. Syntax file.seek(offset, whence) offset: The number […]
Append vs Extend vs Insert in Python
In Python, the list data structure provides several methods for adding elements to a list. Three commonly used methods are append, extend, and insert. Each method serves a different purpose for modifying lists. 1. append The append method adds a single element to the end of the list. This method modifies the list in place […]
Python Seaborn Library
Seaborn is a Python visualization library based on matplotlib that provides a high-level interface for drawing attractive and informative statistical graphics. It simplifies the process of creating complex visualizations with just a few lines of code. 1. Installation To use Seaborn, you first need to install it. You can install it using pip: pip install […]
Understanding the `__add__` Method in Python
The __add__ method in Python is a special method used to define the behavior of the addition operator + for instances of a class. This method allows you to customize how objects of a class interact with each other when using the addition operator. 1. Basic Usage To use the __add__ method, you need to […]
Plotting Rays on a Graph Using Bokeh in Python
Bokeh is a powerful Python library for interactive data visualization. It allows you to create a wide range of plots, including lines, scatter plots, and custom shapes like rays. This guide demonstrates how to plot rays on a graph using Bokeh. 1. Installation If you don’t have Bokeh installed, you can install it using pip: […]