The itty-bitty Python web framework... Now Rewritten For Python 3!

If you're on Python 2, you're looking for itty for Python 2 instead...

import itty3

# Make an app (mostly just for routing & niceties).
app = itty3.App()

# Register your views with the app.
@app.get("/")
def index(request):
    return app.render(request, "Hello, world!")

if __name__ == "__main__":
    # Run a simple WSGI server!
    app.run()

itty3 is a micro-framework for serving web traffic. At its 1.0.0 release, itty3 weighed in at less than ~1k lines of code.

Granted, it builds on the shoulders of giants, using big chunks of the Python standard library. But it has no other external dependencies!

Reasons for itty3:

• Extremely lightweight
• Fast to start working with
• Easy to produce initial/toy services
• Minimal boilerplate
• Useful for places where you can't/don't have a full Python setup
• Useful for including directly, like when you lack permissions
• Works with a variety of WSGI servers, including Gunicorn

If you need to produce a big application, you're probably better off with Django, Flask, or any of the other larger/more mature web frameworks. No pressure!

pip install itty3 is what most people will want.

That said, itty3 is completely self-contained to a single file & relies only on the Python standard library. You can directly copy itty3.py into your project & import it directly!

• Python 3.7+

New BSD

$ pip install pytest pytest-cov
$ pytest tests

# For code coverage
$ pytest --cov=itty3 tests

$ pip install -r docs/requirements.txt
$ cd docs
$ make html