Introduction : In Python, the date format can be changed using the ” datetime ” module. The “datetime” module is a part of the standard library. It is powerful and flexible, making it easy to work with dates and times in Python. “datetime” module provides classes for handling & working with dates and times. It …
Extract numbers from string : many times, while working with strings we come across this issue in which we need to get all the numeric occurrences. This type of problem generated occurs in competitive programming and also in web development. Extract numbers from a string are using in numpy module. Numpy: Numpy is a general-purpose …
Multiplication of 2D arrays in Python involves performing matrix multiplication or element-wise multiplication, depending on the context. Let’s cover both scenarios: 1. Matrix Multiplication (Dot Product) Matrix multiplication involves multiplying rows of the first matrix with columns of the second matrix to produce a new matrix. In Python, you can use numpy for efficient matrix …
Trimming a string by removing a specified number of characters from the end of the string in Python can be achieved using several methods. Understanding these methods is essential for manipulating strings effectively in various programming scenarios. Here are a few common approaches: 1. Using String Slicing String slicing is one of the most straightforward …
Trim a string by number of characters from the end of the string in Python Read More »
In Python, left padding a string with specific characters can be done using various methods. Here are a few common ways to achieve this: 1. Using str.rjust() The rjust() method returns a right-justified string of a given width, padding it with a specified character (default is a space). python Copy code original_string = “hello” padded_string …
Left padding a string with specific characters in Python Read More »
Rearrange characters in a string such that no two adjacent characters are same. Given a string with lowercase repeated characters, the task is to rearrange characters in a string so that no two adjacent characters are the same. If it is not possible to do so, then print “Not possible”. The idea is to put …
Rearrange or shuffle characters in a string in python Read More »
Variables are considered to be identifiers having a physical memory location,Which are used to hold values temporarily during the program execution. python interpreter can determine on itself that what type of data is stored in the variable,so before assigning a value,variables do not need to ne declared. We use the equal to sign ‘=’ to …
We can use Python with OpenCV and a pre-trained deep learning model to detect faces and then detect if those faces are smiling. Here’s a basic example using the OpenCV library and a pre-trained Haar Cascade classifier for face detection, along with a pre-trained model for detecting smiles. First, make sure you have OpenCV installed …
Python program to detect smiling face from an image Read More »
In this tutorial we are going to learn about how to create a string of random characters using python. Here we use python because it is easy to understand and easy to write. Create a string of random characters using Python Method 1:Generate a random string using random.choices() This random.choices()_function of a random module can …
How to Create a string of random characters using Python Read More »
Audio is a widespread form of media on the web, commonly in the MP3 file format. In this tutorial, we’ll learn how to build a GUI application in Python which can trim/cut any user input portion of an MP3 audio file. To build such an application, we’ll use the following packages: ‘pydub‘ package in Python …
Build a MP3 cutter/trimmer application using Python and Tkinter Read More »