Book Image

Modern Python Standard Library Cookbook

By : Alessandro Molina
Book Image

Modern Python Standard Library Cookbook

By: Alessandro Molina

Overview of this book

The Python 3 Standard Library is a vast array of modules that you can use for developing various kinds of applications. It contains an exhaustive list of libraries, and this book will help you choose the best one to address specific programming problems in Python. The Modern Python Standard Library Cookbook begins with recipes on containers and data structures and guides you in performing effective text management in Python. You will find Python recipes for command-line operations, networking, filesystems and directories, and concurrent execution. You will learn about Python security essentials in Python and get to grips with various development tools for debugging, benchmarking, inspection, error reporting, and tracing. The book includes recipes to help you create graphical user interfaces for your application. You will learn to work with multimedia components and perform mathematical operations on date and time. The recipes will also show you how to deploy different searching and sorting algorithms on your data. By the end of the book, you will have acquired the skills needed to write clean code in Python and develop applications that meet your needs.
Table of Contents (21 chapters)
Title Page
Copyright and Credits
Packt Upsell
Contributors
Preface
Index

Serving HTTP


Interacting through HTTP is one of the most frequent means of communication between distributed applications or even totally separated software and it's also the foundation of all existing web applications and web-based tools.

While Python has tens of great web frameworks that can satisfy most different needs, the standard library itself has all the foundations that you might need to implement a basic web application.

How to do it...

Python has a convenient protocol named WSGI to implement HTTP-based applications. While for more advanced needs, a web framework might be required; for very simple needs, the wsgiref implementation built into Python itself can meet our needs:

import re
import inspect
from wsgiref.headers import Headers
from wsgiref.simple_server import make_server
from wsgiref.util import request_uri
from urllib.parse import parse_qs


class WSGIApplication:
    def __init__(self):
        self.routes = []

    def route(self, path):
        def _route_decorator(f)...