Bindeshwar S. Kushwaha, Author at PostNetwork Academy

Mathematical Operations in Python using Object-Oriented Programming in Python

Leave a Comment / Programming, Python / Bindeshwar S. Kushwaha

Python is an object-oriented language and a class can have properties and methods. In this post, I will create a simple class having a constructor __init__() and four methods namely mysum(), mymul(), mydiv() and mysub(). Moreover, they compute addition of two numbers, multiplication of two numbers, division of a number by another and subtraction of […]

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Addition in R programming language

Leave a Comment / R Programming / Bindeshwar S. Kushwaha

R programming language is very popular for data science, machine learning and statistical computing. Furthermore, the syntax of R is very simple and easy to learn. In this pots, I am going to make a simple program in R which will add two numbers. a<-12 b<-13 c<-a+b print(c) In the above program, two numeric vectors

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Update Command in Structured Query Language (SQL)

Leave a Comment / DBMS / Bindeshwar S. Kushwaha

Sometimes you may need to update table in SQL which you have created. For this you need to use UPDATE command with SET option. In this post, you will know that how you can update a record of SQL database. You can see in the below program that a database school is created and inside

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Array in Java

Leave a Comment / Programming / Bindeshwar S. Kushwaha

An array in Java is a collection of values having contiguous memory locations and share a common name. Suppose you want to create an array of five numbers having data type integer and array name in num. So, first you need to declare as int num[]; Second, you need to allocate memory using new operator

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Generators in Python

Leave a Comment / Programming, Python / Bindeshwar S. Kushwaha

Generators in Python are like ordinary function the difference that it contains yield statement instead of return. Furthermore, when a function encounters an yield statement it pauses execution of function and saves the state of the function. And when function is called again it starts from the next statement where it was paused. See the

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sympy Library in Python

Leave a Comment / Programming / Bindeshwar S. Kushwaha

Suppose that in Python you want to expand an expression (x+y)2 to x2 + y2 + 2 xy, this can be done using sympy library in Python, first of all see a simple program. from sympy import * x = Symbol(‘x’) y = Symbol(‘y’) z=(x + y)**2 print(expand(z)) Output:- x**2 + 2*x*y + y**2 How

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COUNTIF and SUMIF Functions in MS Excel

Leave a Comment / Spreadsheet / Bindeshwar S. Kushwaha

COUNTIF() and SUMIF are very important functions in excel which are used to automate manual tasks. Furthermore, these functions are frequently used in finance and accounting. In this post, I am going to explain working of these two functions. COUNTIF() function- This function counts the values of a column when a condition if fulfilled

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K-Nearest Neighbors Algorithm in Python

Leave a Comment / Machine Learning, Python / Bindeshwar S. Kushwaha

K-nearest neighbors algorithm is a machine learning algorithm which is used for classification and regression, and it can be applied where other machine learning algorithms are applied. See the typical problem setting , Suppose (x1, y1), (x2, y2), (x3, y3), ……………….(xn, yn) pairs in which x’s are attributes and y’s are labels, suppose another instance

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Write a program which opens a CSV file in Python and Reads Data from it

Leave a Comment / Python / Bindeshwar S. Kushwaha

1-import csv 2-fcsv=open(‘mycsv.csv’, ‘r’) 3-table=csv.reader(fcsv) 4-for row in table: 5- print(row) Program Description In the above program a library csv is imported in the first file which is used to manipulate csv files. Moreover, a file object fcsv is created using open function, thereafter file object is passed into reader function

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Writing and Reading Excel Data from Python

Leave a Comment / Python, Spreadsheet / Bindeshwar S. Kushwaha

Python is a very popular language for data analysis and data manipulation. Furthermore, Python has a lot of libraries to manipulate Excel data. In this post, I will explain how to write to and read from Excel sheet using Python’s script . Which will be very useful for you to learn data science and Artificial

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Bindeshwar S. Kushwaha

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