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Master Python Testing with Doctest: A Comprehensive Guide

Unlock the power of documentation testing with our complete doctest tutorial, designed to simplify python doc tests and enhance your code's reliability through embedded tests.

pip install doctest

Overview

What is doctest and why use it?

Key features and capabilities

Installation instructions

Basic usage examples

Common use cases

Best practices and tips

Common Use Cases

Code Examples

Getting Started with doctest

import doctest\n\ndef add(a, b):\n    '''\n    Adds two numbers together.\n\n    >>> add(2, 3)\n    5\n    >>> add(0, 0)\n    0\n    '''\n    return a + b\n\ndoctest.testmod()

Advanced doctest Example

def factorial(n):\n    '''\n    Returns the factorial of a number.\n\n    >>> factorial(5)\n    120\n    >>> factorial(0)\n    1\n    '''\n    if n == 0:\n        return 1\n    else:\n        return n * factorial(n-1)\n\nimport doctest\ndoctest.testmod()

Alternatives

Common Methods

testmod

Runs doctests in all functions and classes in the module.

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