build-a-saas-app-with-flask
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build-a-saas-app-with-flask
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We Have to Talk About Flask
I've been maintaining my Build a SAAS App with Flask video course[0] for 8 years. It has gone from pre-1.0 to 2.3 and has been recorded twice with tons of incremental updates added over the years to keep things current.
In my opinion tutorial creators should pin their versions so that anyone taking the course or going through the tutorial will have a working version that matches the video or written material.
I'm all for keeping things up to date and do update things every few months but rolling updates don't tend to work well for tutorials because sometimes a minor version requires a code change or covering new concepts. As a tutorial consumer it's frustrating when the content doesn't match the source code unless it's nothing but a version bump.
I've held off upgrading Flask to 3.0 and Python 3.12 due to these open issues with 3rd party dependencies https://github.com/nickjj/docker-flask-example/issues/17.
[0]: https://buildasaasappwithflask.com/
- Good example projects on Github with Flask and Next.js 13?
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Course recommendation for a begineer
Flask Mega Tutorial and "Build a SaaS App" purchased directly from the course website are probably your best bets.
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How familiar do I need to be with Python to learn Flask?
The resource I'm looking to learn from is u/nickjj_ course, but I'm trying to figure out how familiar I should be with Python before I dive into it. Looks like I may need some HTML/CSS/JS as well.
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Show HN: The pure Python SaaS starter kit
Build a SAAS App with Flask. Course / Boilerplate. https://buildasaasappwithflask.com/
- Has anyone taken this course?
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starter project?
Personally I maintain https://github.com/nickjj/docker-flask-example. There's also https://github.com/nickjj/build-a-saas-app-with-flask if you want more opinions.
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Where can I find templates (with or without code) of flask apps/SaaS?
There's: https://github.com/nickjj/build-a-saas-app-with-flask
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Using Celery with Flask application factory
If you're looking only for a code reference there's https://github.com/nickjj/build-a-saas-app-with-flask which uses an app factory and Celery. It's all set up to send emails through Celery and has tests too.
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How to go about creating a SaaS without experience as a student?
A few years ago I started my programming/ SaaS yourney and now I can live from my solo bootstrapped SaaS. I started learning Python 2 (free) on codecademy. Followed by the free CS50 from Harvard on Edx.org . After that I build my first SaaS using the SaaS template/ course https://buildasaasappwithflask.com
gunicorn
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Nginx Unit – Universal web app server
I'm hoping so – gunicorn has a long-open pull request that would fix `--reuse-port`, which currently does nothing
https://github.com/benoitc/gunicorn/pull/2938
- SynchronousOnlyOperation from celery task using gevent execution pool on django orm
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Deploying Django when using python-socketio
However, I'm curious about the best way to deploy, specifically with regard to WSGI. I've tried using the raw eventlet WSGI server (`eventlet.wsgi.server(eventlet.listen(("", 8000)), application)`). I then start it with `python manage.py runserver`. This has worked okay, but I'm unsure about how scalable it is. It seems like the standard stack is Django + Gunicorn + NGINX. Based on `python-socketio` documentation, this should be possible. I tried django + eventlet + gunicorn, but it seems like gunicorn a) [doesn't play nice with eventlet](https://github.com/benoitc/gunicorn/pull/2581) and b) only supports one worker. Gevent + Gunicorn doesn't have this bug, but still only supports one worker. Also, I'm not sure how actively maintained gevent is. So I'm not sure how scalable either Gunicorn + eventlet or Gunicorn + geventlet is as a WSGI server. So I'm not sure if Gunicorn is my best bet, or if it's too limited.
- The Django ecosystem is not so good
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3 cool project ideas for Python programmers
For building your API, I recommend using the Flask library. It is very beginner-friendly, and you will be able to build a simple API in a matter of minutes! Keep in mind that, for a more serious project, you should definitely use something like gunicorn to run you API as a production server.
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Django 4.1 Released
Interesting looks like it might actually be a python bug. Somehow just changing from sys.exit(0) -> os._exit(0) apparently fixes it.
https://github.com/benoitc/gunicorn/pull/2820
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Serverless Templates for AWS and Python
The cool thing is that you can easily migrate your WSGI- application such as Flask, Django, or Gunicorn to AWS.
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Scope of database threads + connections + sessions
Yeah, that's kind of the impression I was getting. I stumbled across a github issue for gunicorn along these lines.
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Running Django with Gunicorn - Best Practice
Taking a glimpse at gunicorn's code it looks like they pretty much all do the same: 2. seems to be creating a wsgi app using django's internals, and 3. uses 2.
What are some alternatives?
cookiecutter-flask - A flask template with Bootstrap, asset bundling+minification with webpack, starter templates, and registration/authentication. For use with cookiecutter.
waitress - Waitress - A WSGI server for Python 3
flask-boilerplate - Boilerplate template for a Python Flask application with Flask-SQLAlchemy, Flask-WTF, Fabric, Coverage, and Bootstrap
Werkzeug - The comprehensive WSGI web application library.
docker-flask-example - A production ready example Flask app that's using Docker and Docker Compose.
bjoern - A screamingly fast Python 2/3 WSGI server written in C.
flask-boilerplate - Flask boilerplate using the application factory with basic authentication.
uwsgi - Official uWSGI docs, examples, tutorials, tips and tricks
microblog - The microblogging application developed in my Flask Mega-Tutorial series. This version maps to the 2024 Edition of the tutorial.
meinheld - Meinheld is a high performance asynchronous WSGI Web Server (based on picoev)
hypercorn
hypercorn - Hypercorn is an ASGI and WSGI Server based on Hyper libraries and inspired by Gunicorn.