When comparing Nagare vs Bottle, the Slant community recommends Bottle for most people. In the question“What are the best general-purpose Python web frameworks usable in production sites?” Bottle is ranked 3rd while Nagare is ranked 12th. The most important reason people chose Bottle is:
Bottle works around the one-file approach, everything is done in a `bottle.py` file. This means that it's extremely easy to share and upload your application since it practically is just one python file.
Ranked in these QuestionsQuestion Ranking
Pro 100% Python web application development - no HTML, CSS or JS needed
Nagare is a mature web framework that saves you from manually creating routes. It basically is just a Python object graph.
Pro Continuation based web framework
Nagare allows for simpler programming flow hiding client/server requests.
Pro Single-file distribution
Bottle works around the one-file approach, everything is done in a
bottle.py file. This means that it's extremely easy to share and upload your application since it practically is just one python file.
Being a small one file distribution it includes almost every vital thing you need to support little websites (routing, templating). Everything else can be implemented using plugins.
Pro No need to install
It is so little there's no need to install, it is included in the standard libs python.
Pro Async, *let friendly
Using it with gevent is a breeze. It's a WSGI app so it's easy to make it work with anything.
Pro Truly magnificent
Con Stateful server that maintains both session and UI states server side
Con No python 3 support
Con Needs Stackless Python 2 to run
Con Uses old YUI2 JS framework
Nagare uses YUI2 internally for XHR requests. YUI2 has been deprecated since 2011.
Con Small community. Difficult to find online docs and examples
Con Very hard to develop projects that are not smaller than 1000 lines
While Bottle is a great framework for building small applications (generally less than 1000 lines of code), it starts getting very hard to manage your application if you want to go even a bit larger than that.
The fact that it follows a single-file distribution model and that it's missing something like Flask's blueprints only make this problem worse.