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wsgiref Module¶
The wsgiref module provides reference implementations and utilities for WSGI (Web Server Gateway Interface) servers and applications.
Complexity Reference¶
| Operation | Time | Space | Notes |
|---|---|---|---|
| Server setup | O(1) | O(1) | Create server; single-threaded by default |
| Handle request | O(n) | O(n) | n = request/response size |
WSGI Server Implementation¶
Simple WSGI Application¶
from wsgiref.simple_server import make_server
def application(environ, start_response):
"""WSGI application - O(1)"""
path = environ.get('PATH_INFO', '')
if path == '/':
response_body = b'Hello, World!'
status = '200 OK'
else:
response_body = b'Not Found'
status = '404 Not Found'
response_headers = [
('Content-Type', 'text/plain'),
('Content-Length', str(len(response_body)))
]
start_response(status, response_headers)
return [response_body]
# Create server - O(1)
httpd = make_server('localhost', 8000, application)
# Serve - O(m)
print("Serving at http://localhost:8000")
httpd.serve_forever()