Python Numbers, Type Conversion and Mathematics
Prerequisite: Python Language Introduction
Python is a general-purpose interpreted, interactive, object-oriented, and high-level programming language. It was created by Guido van Rossum. It is an open-source programming language.
Types of numbers in Python
There are three numeric types in Python:
As Python is a Loosely typed language, we need not define the variable. Variables of numeric types are created when you assign a value to them.
<class 'int'> <class 'float'> <class 'complex'>
Converting the value of one data type (integer, string, float, etc.) to another data type is called type conversion.
After converting float to integer : 3 type : <class 'int'> After converting string to integer : 323 type : <class 'int'>
Arithmetic operations on a number
You can add, subtract, multiply, and divide numbers using various methods. operator description example
+ Addition Add values on either side of the operator. 2 + 3 = 5 – Subtraction Subtracts right-hand value from left hand value. 3 – 2 = 1 * Multiplication Multiply values on either side of the operator 2 * 3 = 6 / Division Divides two operands 3 / 2 = 1.5 % Modulus Divides two operands and returns remainder 3 / 2 =1 ** Exponent Perform power operation 3 ** 2 = 9 // Floor Division 3 // 2 = 1
80 20 1500 1.6666666666666667 1 20 931322574615478515625000000000000000000000000000000
The math module has a set of mathematical functions, Some of them are discussed below. Method Description
math.sqrt() Returns the square root of a number math.pow() Returns the value of x to the power of y math.perm() Returns the number of ways to choose k items from n items with order and without repetition math.gcd() Returns the greatest common divisor of two integers math.floor() Rounds a number down to the nearest integer math.ceil() Rounds a number up to the nearest integer math.factorial() Returns the factorial of a number
The ceil of 2.3 is : 3 The floor of 2.3 is : 2
The copysigned value of -10 and 5.5 is : -5.5 The gcd of 5 and 15 is : 5
To learn more about Math Functions you can refer to this article on Geekforgeeks
In Python, we have a set of functions that are used to generate random numbers. These functions are used in games and lottery applications.
Methods in the random library:
A random number between 0 and 1 is : 0.8548698466875713
There is a detailed article on random numbers in geeksforgeeks. You can refer to the article here.