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Articles by Niharika Aitam
Page 3 of 14
Python - Column summation uneven in sized lists
What is Column Summation Column summation refers to the process of calculating the sum of values within each column of a dataset or a matrix. In the context of data analysis or numerical computations, column summation is a common operation used to summarize and analyze data along the vertical axis. For example, consider a dataset represented as a table with rows and columns. Each column corresponds to a variable or a feature, and each row represents an observation or a data point. Column summation involves adding up the values within each column to obtain a single sum for each variable. ...
Read MorePython - Column Mean in tuple list
The column mean in a tuple list refers to the average value of elements within each column of the tuple data. A tuple list is a collection of tuples, where each tuple represents a record or observation, and the elements within each tuple correspond to different columns or variables. Column means can be particularly useful when dealing with numerical data and performing statistical analysis or making data-driven decisions. For example, consider the following tuple list. data = [(1, 2, 3), (4, 5, 6), (7, 8, 9)] In this case, the tuple list has three tuples, and each tuple ...
Read MoreDjango CRUD (Create, Retrieve, Update, Delete) Function Based Views
CRUD is abbreviated as Create, Retrieve, Update and Delete Functions. In Django, we can perform all these CRUD operations on the data we created into the database. Now let’s create the views.py function based on the operation that we want to perform. Create Operation with Django Create is used to create or add new data entries to the database table. In the following snippet, we begin by importing both the model form and the corresponding model. Next, we proceed to check whether the request is a POST request. If it is a POST request, we create a new form ...
Read MoreDjango form field custom widgets
A widget is the representation of the Html input element using Django. The widget is used to handle the rendering of the HTML page and data extracting from the POST/GET dictionary. Every time whenever we specify the field on a form, Django uses the default widget to display the data in an appropriate manner. Django is the one of the best Framework used by most of the users, to perform the web development. It provides many advanced features, functions and packages to design the best web pages and connect with the servers using the python programming language. Now let’s ...
Read MoreDjango Form submission without Page Reload
In Django, we can submit the form without reloading the page using the Jquery and Ajax (Asynchronous JavaScript and XML) requests. Let’s see an example to work with the Ajax to submit the Django form without reloading the page. Create a new Django project First create a new project in Django with the name Reload_project and also create a new app in the project directory with the name Reloadapp by executing the below commands in the command prompt. django-admin startproject Reload_project cd Reload_project django-admin startapp Reloadapp Now in INCLUDED_APPS in settings.py file of the Reload_project directory, add the ...
Read MorePrint objects of a class in Python
An object is the part of the Object Oriented Language (OOPs), which is an instance of the class. The class is the blueprint or template that specifies the methods and properties of that given class. When we create an object of a class, it contains all the set of instance methods and variables that are related to that particular object Using __str__ method We have two methods namely, __str__ or __repr__ in python which automatically calls the string and used to print the object with the detail view about it. Following is the syntax for using the __str__ method. ...
Read MoreProgram to print window pattern
Python is one of the most popular and efficient programming language which helps the developers to write and execute the code very easily and faster. It provides several methods, packages, modules and libraries to develop the code within no time and with less complexity. A window can be a square or a rectangle or a triangle with having a plus sign or without a plus sign, in the middle. In order to print the window pattern using the python language let’s see an example and understand. Example In this example, we will create a window in the rectangle without ...
Read MoreProgram to Print K using Alphabets
Python is used to print different patterns easily within less time as per the user requirement. In the same way, we can print the letter K using the alphabets available in the English language. Example In this example we will create the letter K by using the K alphabet. The below is the code. string="" j = 7 i = 0 for Row in range(0, 10): for Col in range(0, 10): if (Col == 1 or ((Row == Col ...
Read MoreProgram to check if a string contains any special character
Python helps us to develop code as per the developer requirement and application. It provides multiple modules, packages, functions and classes which makes the code more efficient. Using python language, we can check if a string contains any special character or not. There are several ways to check the string for the specials characters in it, let’s see one by one. Using a Regular Expression The re module in Python provides support for regular expressions, which are patterns used to match character combinations in strings. The regular expression pattern [^a−zA−Z0−9\s] matches any non−alphanumeric character (excluding whitespace) in the string. The ...
Read MoreDivide one Hermite series by another in Python using NumPy
The Hermite series is one of the mathematical techniques, which is used to represent the infinite series of Hermite polynomials. The Hermite polynomials referred as the sequence of orthogonal polynomials which are the solutions of the Hermite differential equation. Dividing one hermite series by another The Hermite series is given by the following equation. f(x) = Σn=0^∞ cn Hn(x) Where Hn(x) is the nth Hermite polynomial cn is the nth coefficient in the expansion. The coefficient cn can be determined by using the below formula: cn = (1/$\mathrm{\surd}$(2^n n!))$\mathrm{\lmoustache}$ f(x) Hn(x) e^(−x^2/2) dx Example ...
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