Home Original page

numbers | Python Standard Library – Real Python

The Python numbers module provides an abstract hierarchy of numeric types. It defines a set of abstract base classes (ABCs) that describe the various numeric types and their behaviors in Python.

This module is useful for checking whether an object is a number and for creating your own numeric types.

Here’s an example:

Key Features

  • Provides abstract base classes for numeric types
  • Enables type checking for numbers
  • Allows creation of custom numeric types

Frequently Used Classes and Functions

Examples

Check whether a number is an instance of a numeric type:

Define a custom numeric type by subclassing:

Common Use Cases

  • Verifying whether a value is of a numeric type
  • Implementing custom numeric types with specific behaviors
  • Ensuring type compatibility in numeric computations

Real-World Example

Suppose you want to create a custom numeric type that represents a constant value. You can use the numbers module to ensure your custom type behaves like a real number:

By subclassing numbers.Real, you ensure that your Constant class behaves like a real number, allowing you to integrate it seamlessly with existing numeric operations.

Tutorial

Numbers in Python

In this tutorial, you'll learn about numbers and basic math in Python. You'll explore integer, floating-point numbers, and complex numbers and see how perform calculations using Python's arithmetic operators, math functions, and number methods.

basics python

For additional information on related topics, take a look at the following resources: