Learn Python Python Numbers

Python supports numeric data types to store numbers and perform mathematical operations. These numeric types are simple to use and automatically assigned when you give a value to a variable.

There are three numeric types in Python:

int
float
complex

Variables of numeric types are created when you assign a value to them.

Integer (`int`)

The int type is used to store whole numbers, positive or negative, without decimals.

Float (`float`)

The float type is used to store numbers with decimal points.

Complex Numbers (`complex`)

Complex numbers are written with a real part and an imaginary part. The imaginary part is written using j.

Access Real and Imaginary Parts

Type Conversion (Casting Numbers)

Python allows converting one numeric type into another using casting functions.

Convert to Integer

Convert to Float

Convert to Complex

Important

You cannot convert a complex number into int or float

Random Number

Python has a built-in module called random to generate random numbers.

To use it, you must import the module first.

Generate a Random Integer

Generate a Random Float

Choose a Random Value from a List

Check Numeric Type

You can use type() to check the numeric data type.

Exercise

Create one variable of each numeric type
Convert an integer to float and complex
Generate a random number between 1 and 100
Print the real and imaginary part of a complex number

Integer (int)

Float (float)

Complex Numbers (complex)