Programming Articles - Page 246 of 2501

Rotation means we have to shift each character forward or backward direction. In the case of forward, the last character is forwarded to the index 0 also known as right rotation. In the case of backward first character at index 0 is backward to the last index also known as left rotation. In this problem, we have given a string of characters and integer d. Our task is to print the left rotated string or right rotated string by d integer. Only the permutation of the current string changes, not the length or frequency of the characters in the ... Read More

CORBA (Common Object Request Broker Architecture) and RMI (Remote Method Invocation) are middleware technologies used in Java to support distributed computing. CORBA (Common Object Request Broker Architecture) is a middleware technology that allows distributed objects in a networked environment to communicate with one another. RMI (Remote Method Invocation) is a middleware technology that allows Java objects to invoke methods on remote JVM (Java Virtual Machine) objects. Read this article to find out more about CORBA and RMI and how they are different from each other. What is CORBA? CORBA (Common Object Request Broker Architecture) is a middleware technology that allows ... Read More

Ngrok is a tool that is used to create a secure tunnel between your local machine and the internet. It is used to test the web application and allows developers to expose their local web server to the internet without having to deploy it to a remote server. Python Flask allows you to create web applications locally but we might want to showcase it to the world by running it online. In this article, we will use the Ngrok tool to run the web application online without hosting it on any server. The Steps to Run Python Flask App Online ... Read More

The subprocess module can be used to run multiple Python files in a folder one after another. Running multiple files one after another is required in various situations like when processing large data sets or performing complex analysis. In this article, we will discuss the steps involved in running multiple Python files in a folder sequentially with examples. Method 1: Using the subprocess() method Steps for creating and running multiple Python files sequentially Step 1: Create multiple Python files to run We need to have three Python files in a folder to run them sequentially. So the first step ... Read More

Pygal is a Python library that is used to create interactive, customizable charts and graphs. We can rotate the x-axis label using the x_label_rotation attribute in the Pygal module. The rotation of the x-axis label makes the chart easier to read and comprehend. In this article, we will discuss how to rotate the x-label using Pygal with an example. Algorithm A general algorithm for rotating the x label using pygal is given below − Import the Pygal module. Create a chart object (e.g., Bar, Line, Pie, etc.). Add data to the chart using the add method. Set the x-axis ... Read More

Python provides various in-built methods to retrieve an entire row or column of an array. We can use the Slice notation method, Numpy Library, list comprehension, and for loop to retrieve the entire row or column of an array. In this article, we will explore all the methods with examples to retrieve the row or column of an array. Method 1: Using Slice Notation Using slice notation we extract a subset of elements from an array. We use the “:” notation to specify the start and end index of the subset. To retrieve an entire row or column we ... Read More

We can reshape the Pandas series using ways like Transpose, reshape method, and melt function. A Pandas Series is a one-dimensional labeled array that can hold data of any type (integer, float, string, etc.). It is similar to a NumPy array but has an index associated with each element that can be used to access individual values. Reshaping refers to changing the shape or structure of the Pandas series for using the data in various ways. Algorithm The general algorithm to Reshape Pandas Series using different methods is as follows − Create a Pandas Series with some data. ... Read More

Resampling a Numpy array representing an image is the process of changing the size of the array while maintaining the quality of the image. We can resample an array using interpolation, decimation, and upsampling techniques in Python. We can use the ndimage.zoom() function for Scipy library in Python to resample a Numpy array representing an image. In this article, we will understand how to resample a Numpy array representing an image using the Scipy module in Python. Interpolation Interpolation is a technique used to estimate values between existing data points. In Numpy we have several interpolation methods like liner, ... Read More

Exploring the whereabouts of the International Space Station (ISS) and witnessing its real−time movements can be an exhilarating experience. The following article aims to showcase how Python can be utilized to track the ISS, utilizing the ISS API provided by Open Notify and visualizing its location on an interactive world map with the aid of the `folium` library. Installing the Required Libraries Before we embark on our ISS tracking journey, it is necessary to install a couple of libraries: `requests`, which facilitates API calls, and `folium`, which empowers the creation of captivating interactive maps. pip install requests ... Read More

In the realm of building APIs using the renowned Django Rest Framework (DRF), one must skillfully navigate the challenges posed by managing the rate at which clients can unleash their torrent of requests upon your API endpoints. Throttling mechanisms come to the rescue by effectively safeguarding against potential abuse, protecting precious resources, and fostering an environment of equitable usage among clients. In this in−depth discourse, we shall embark upon an enlightening journey, exploring the multifaceted realm of implementing throttling techniques within your DRF−powered API. Brace yourself for a captivating exploration of the built−in throttling classes at your disposal, as well ... Read More