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Python does not allow working with arrays directly. This is NumPy where the library comes in, which makes it possible to handle and manipulate arrays in Python. Arrays can be of any specified size and dimensions. Sometimes, there is a need...

In this tutorial, we will discuss how to store numpy arrays in CSV files. Using pandas DataFrame to save NumPy arrays in CSV files In this approach, we will first save the array in pandas a DataFrame and then convert it into a CSV file. The...

This tutorial will discuss how to read data from a CSV file and store it in a numpy array. Use numpy.genfromtxt() the function to read CSV data into a NumPy array genfromtxt() The function is commonly used to load data from a text file. We...

We will learn about Pie Charts in this tutorial. # -*- coding: utf-8 -*- import matplotlib.pyplot as plt x = np . array([ 15 , 25 , 30 , 40 ]) label = [ "France" , "Germany" , "Uk" , "US" ] plt . pie(x, labels = label) plt . show()   gramm...

This tutorial shows how to use matplotlib.pyplot.imshow() the and matplotlib.pyplot.pcolormesh() methods in Python to generate colorplots of 2D arrays. In Matplotlib, we use matplotlib.pyplot.imshow() the method to plot 2D arrays. matplotli...

This tutorial explains how we can draw arbitrary lines in Matplotlib using matplotlib.pyplot.plot() the method, matplotlib.pyplot.vlines() the method, or matplotlib.pyplot.hlines() the method and . matplotlib.collections.LineCollection Matp...

This tutorial explains how we can display LaTex formulas or equations in Matplotlib. LaTex Writing formulas in Matplotlib Python import math import numpy as np import matplotlib.pyplot as plt x = np . linspace( 0 , 2 * math . pi, 100 ) y =...

If we have two numbers a and m , then a the modular multiplicative inverse of is m modulo x if: a * x % m = 1 In this case, the multiplicative inverse exists only if a and m are relatively prime, that is, if the greatest common divisor of a...

sine The inverse of a function is called arcsine . Sine is equal to the ratio of the side opposite the hypotenuse to the longest side. sine The inverse of the function calculates the angle between the two sides. Assuming we have an 角度θ...

Trigonometry is a field of mathematics that studies the relationship between the angles and side lengths of triangles. The relationship between angles and sides is calculated with the help of some special operations, such as 正弦 ,,,, etc...

Ceiling division returns the nearest integer that is greater than or equal to the current answer or quotient. In Python, we have an operator // for floor division, but there is no operator for ceiling division. This article will discuss the...

This tutorial demonstrates how to get the current date in Python. datetime Get the current date in Python using the module datetime The module has utility functions dedicated to date and time manipulation in Python. Inside the module, it ha...

datetime This tutorial will explain various ways to get hours and minutes from a string containing date and time using the Hours and Minutes module in Python . The Hours and Minutes datetime module provides classes for formatting and manipu...

This tutorial will demonstrate different ways to write tabular data to an excel file in Python. DataFrame.to_excel() Export data to Excel using the function in Python If we want to write tabular data to an Excel worksheet in Python, we can...

Reading and writing files is an important aspect of building programs that are used by many users. Python provides a range of methods that can be used for resource handling. These methods may differ slightly depending on the format of the f...