## In the Python dictionary, can one key hold more than one value? Updated on 24-Mar-2023 14:09:40
What is a Dictionary in Python? A dictionary is Python’s own indigenous representation of a data structure, and can be considered similar to maps in C++. It is a dynamic data structure which stores key-value pairs dynamically, and is mutable. It can be better understood as an associative array, where each element is associated with its key value. Can one key hold more than one value? Although dictionaries in Python store values as key-value pairs, it is possible to store more than one value corresponding to the same key in a dictionary. This is performed by setting containers like ... Read More

## How to learn Python without prior programming knowledge? Updated on 24-Mar-2023 14:02:38
Introduction Python is one of the most popularly used languages in today’s world, with its application spread out in a wide range of domains, ranging from applied fields like computer vision and IoT, to Machine Learning and data-based fields such as Data Analysis. Along with this, Python is one of the easiest languages to start one’s programming journey with, due to its very easy syntax and ease of writing code. Thus here we will look at some steps to learn Python as a beginner. Steps Learning the basics Maintaining consistency Become a part of peer groups Build ... Read More

## How to Get the Sign of an Integer in Python? Updated on 24-Mar-2023 14:01:12
Introduction Python Integers are one of the primary data types, and are used for almost all major mathematical and logical operations. In Python, integers are zero, positive or negative whole numbers without a fractional part and having unlimited precision.They can be expressed in binary, octal and hexadecimal values. In this article, we will learn how to obtain the sign of an integer. Methods Used Using simple mathematical comparison with zero Using copysign() function of math module Using numpy.sign() function Creating a method with abs() function Method 1: Using Mathematical Comparison with Zero We ... Read More

## How does a Python interpreter work? Updated on 24-Mar-2023 13:58:32
What is an Interpreter? The Python interpreter works as a computer converter that converts high-level language to low-level machine language, which is essential for the computer to understand the code written by a programmer. Python codes are executed by an interpreter called CPython, which is written in C language and executes instructions in a block of code one line after another. Steps used Lexing Parsing Creation of byte code Conversion to machine-executable code Returning output Let’s dive into the steps in detail. Step 1: Lexing The first step of analyzing a code block in ... Read More

## How to add group-level summary statistics as a new column in Pandas? Updated on 23-Mar-2023 15:18:07
Pandas is an extremely popular data handling library used frequently for data manipulation and analysis. The Pandas library offers powerful features for analysis such as grouping to analyze various samples having some common features. In this article, we are going to learn how to add these summary statistics obtained through groups of samples as a new column in our existing Pandas dataframes. NOTE − The code in this article was run on a jupyter notebook. Let's begin by importing Pandas. import pandas as pd ExampleFollowing is the sample d ataset we will work on. It has 3 columns storing ... Read More Updated on 23-Mar-2023 15:13:30

## Program to check the similarity of given two triangles Updated on 23-Mar-2023 14:49:07
In this problem, we will learn to check the similarity of two given triangles, which have many real-world use cases from the viewpoint of a programmer. To construct and manage 2D and 3D models of things, CAD systems are utilized, and one key function is the capability to compare two triangles. For instance, engineers working in design and construction may need to make that the foundational measurements of a building match the blueprint. Engineers can rapidly evaluate whether the angles and sides of the foundation game the layout by utilizing a CAD tool that has a built-in feature to check ... Read More

## Program to calculate the Surface Area of a Triangular Prism Updated on 23-Mar-2023 14:40:10
Let us see how to write a program to calculate the Surface Area of a Triangular Prism. It might seem very basic to calculate the surface area of a triangular prism, but there are various areas where programmers may feel the need for it. Some of the common scenarios are listed below − 3D graphics and animation − While constructing 3D models, animators and game developers may need to compute the surface area of a triangular prism in order to correctly represent it in a virtual world. Engineers and architects may need to determine the surface area of ... Read More

## Number of triangles in a plane if no more than two points are collinear Updated on 23-Mar-2023 14:35:32
Let us see how to calculate the number of triangles in a plane with n number of points given, with the constraint that not more than two points are collinear. Computing the number of triangles in a plane with no more than two collinear points is a typical problem in computational geometry, and it is used in computer graphics, image processing, and other areas of computer science. While creating a 2D image from a 3D scene in 3D graphics, for instance, the issue of counting triangles in a plane with no more than two points collinear can come up. The ... Read More

## Different ways to represent N as the sum of K non-zero integers Updated on 23-Mar-2023 14:31:37
The problem “Different ways to represent N as the sum of K non-zero integers” has many real-world use cases. Cryptography − In cryptography, specific cryptographic methods are designed using the concept of encoding a number N as the sum of K non-zero integers. Representing an integer N as the sum of K non-zero integers might appear as a subproblem in different optimization issues in the context of optimization methods. Machine learning − In machine learning, feature vectors that depict the distribution of data points can be created by using the problem of representing an integer N as the sum of ... Read More
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