My Pyhton Web Framework, Based on the testdriven.io tutorial "Building your own Python web framework".
Project description
MPWF
Based on the testdriven.io tutorial "Building your own Python web framework".
It's a WSGI framework and can be used with any WSGI application server such as Gunicorn.
This documentation is an adapted copy of the original one from the tutorial.
Installation
pip install mpwf
How to use it
Basic usage:
from mpwf.api import API
app = API()
# Simple route
@app.route("/home")
def home(request, response):
response.text = "Hello from the HOME page"
# Parametrized
@app.route("/hello/{name}")
def greeting(request, response, name):
response.text = f"Hello, {name}"
# Class Based
@app.route("/book")
class BooksResource:
def get(self, req, resp):
resp.text = "Books Page"
def post(self, req, resp):
resp.text = "Endpoint to create a book"
# With Template
@app.route("/templates")
def template_handler(req, resp):
resp.html = app.template("index.html", context={"name": "MPWF", "title": "A title"})
# JSON
@app.route("/templates")
def template_handler(req, resp):
resp.json = {"name": "data", "type": "JSON"}
Templates
The default folder for templates is templates. You can change it when initializing the main API() class:
app = API(templates_dir="templates_dir_name")
Then you can use HTML files in that folder like so in a handler:
@app.route("/show/templates")
def handler_with_template(req, resp):
resp.html = app.template(
"example.html", context={"title": "Awesome Framework", "body": "welcome to the future!"})
Static Files
Just like templates, the default folder for static files is static and you can override it:
app = API(static_dir="static_dir_name")
Then you can use the files inside this folder in HTML files:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>{{title}}</title>
<link href="/app/static/main.css" rel="stylesheet" type="text/css">
</head>
<body>
<h1>{{body}}</h1>
<p>This is a paragraph</p>
</body>
</html>
Middleware
You can create custom middleware classes by inheriting from the bumbo.middleware.Middleware class and overriding its two methods
that are called before and after each request:
# [...]
class SimpleCustomMiddleware(Middleware):
def process_request(self, req):
print("Before dispatch", req.url)
def process_response(self, req, res):
print("After dispatch", req.url)
app.add_middleware(SimpleCustomMiddleware)
Custom Exception Handling
You can create custom exception handlers like so:
def custom_exception_handler(request, response, exception_cls):
if request.method == 'GET':
response.text = f"Error: {str(exception_cls)}"
# Then add it to the framework:
app.add_exception_handler(custom_exception_handler)
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