Artless and minimalistic web framework without dependencies, working over WSGI.
Project description
artless-framework
The artless and minimalistic web framework without dependencies, working over WSGI.
Main principles
- Artless, fast and small (less then 1000 LOC into a single module) WSGI-framework.
- No third party dependencies (standart library only).
- Support only modern versions of Python (>=3.10).
- Mostly pure functions without side effects.
- Interfaces with type annotations.
- Comprehensive documentation with examples of use.
- Full test coverage.
Limitations
- No Async/ASGI support.
- No built-in support for working with
Cookies. - Requests with
multipart/form-datacontent-type are not supported. - No built-in protections, such as: CSRF, XSS, clickjacking and other attack techniques.
Installation
$ pip install artless-framework
Usages
from http import HTTPStatus
from os import getenv
from string import Template
from artless import App, Request, Response, ResponseFactory
HTML_TEMPLATE = Template(
"""
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Say hello</title>
</head>
<body>
<h1>Hello, $username!</h1>
</body>
</html>
"""
)
def say_hello(request: Request, username: str) -> Response:
available_formats = {
"json": ResponseFactory.json({"hello": username}),
"plain": ResponseFactory.plain(f"Hello, {username}!"),
"html": ResponseFactory.html(HTML_TEMPLATE.substitute(username=username)),
}
format = request.query.get("format", ["plain"])[0]
if format not in available_formats:
return ResponseFactory.create(status=HTTPStatus.BAD_REQUEST)
return available_formats[format]
def create_application() -> App:
app = App()
app.set_routes([("GET", r"^/hello/(?P<username>\w+)$", say_hello)])
return app
application = create_application()
if __name__ == "__main__":
from wsgiref.simple_server import make_server
host = getenv("HOST", "127.0.0.1")
port = int(getenv("PORT", 8000))
with make_server(host, port, application) as httpd:
print(f"Started WSGI server on {host}:{port}")
httpd.serve_forever()
Run it:
$ python3 app.py
Started WSGI server on 127.0.0.1:8000
Check it:
$ curl http://127.0.0.1:8000/hello/Peter
Hello, Peter!
$ curl http://127.0.0.1:8000/hello/Peter?format=html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Say hello</title>
</head>
<body>
<h1>Hello, Peter!</h1>
</body>
</html>
$ curl http://127.0.0.1:8000/hello/Peter?format=json
{"hello": "Peter"}
See more examples.
Configureation
By default, the application defines the following config:
{
"DEBUG": False,
"TEMPLATES_DIR": "templates",
"LOGGING": {
"version": 1,
"disable_existing_loggers": False,
"formatters": {
"default": {
"format": "[{asctime}] [{process:d}] [{levelname}] {message}",
"datefmt": "%Y-%m-%d %H:%M:%S",
"style": "{",
},
},
"handlers": {
"stdout": {
"formatter": "default",
"level": "INFO",
"class": "logging.StreamHandler",
"stream": "ext://sys.stdout",
}
},
"loggers": {
"artless": {
"level": "INFO",
"handlers": ["stdout"],
"propagate": False,
}
},
"root": {"level": "WARNING", "handlers": ["stdout"]},
},
}
Before creating an application instance, set the configuration by overriding existing values and/or adding a new ones:
from artless import Config, App
Config().replace({"debug": True, "database": {"host": "localhost"}})
application = App()
To get values from the config, anywhere in the application:
from artless import Config
db_host = Config().database.get("host")
...
Roadmap
- Add ASGI support.
- Add plugin support.
- Add cookies support.
- Add async interface.
- Add
multipart/form-datasupport. - Add test client.
- Add benchmarks.
- Add more examples.
- Add Sphinx doc.
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