Skip to main content
This is a pre-production deployment of Warehouse. Changes made here affect the production instance of PyPI (
Help us improve Python packaging - Donate today!

An extension to manage and serve your javascript assets with bower

Project Description

Flask-Bower provides a method to manage and serve bower installed packages. This simplifies javascript dependency management a lot.

To provide this, there is a flask blueprint to serve content from your bower_components directory and use url_for() for serving the files same as serving files form flask static folder.


Flask-Bower is available on PyPi:

So just add it to your requirements.txt or install using pip install flask-bower

First you have to add it to your app
from flask_bower import Bower


This provides the /bower url route.

Per default, the bower_components directory has to be inside the app directory (app/bower_components - like your static and templates directories). Another directory can be specified using BOWER_COMPONENTS_ROOT

Install your packages like jquery with bower: bower install -S jquery

Now it should look like:

$ ls -1 app/bower_components/jquery

To include and use this, you can use url_for():

<script src="{{ url_for('bower.static', filename='jquery/dist/jquery.js') }}"></script>


There are several configuration options to customize the behavior:


default: bower_components

Directory name containing your installed bower packages


default: True

Keep deprecated functions available

Note: deprecated functions will be removed in future versions

affected functions:

  • bower_url_for - please migrate to url_for('bower.static', filename='component/path')

default: True

Append ?version= parameter to url (useful for cache busting by updates). It tries to detect the version in the following order:

  1. bower.json
  2. package.json (if available)
  3. file modification timestamp

default: False

Replace flasks url_for() function in templates.

This is useful - but not recommended - to build an “overlay” for the static folder.

Warning: Replacing url_for() causes conflicts with other flask extensions like flask-cdn, since only one extension can replace url_for() at a time and the last registered extension wins.


default: None

Subdomain to serve the content like static (see flask blueprint documentation for subdomains)


default: True

Check if a minified version is available and serve this instead (check if a file with <filename>.min.<ext> like jquery/dist/jquery.min.js exists)


default: /bower

Customize the url prefix


bower_url_for(component, file)

This is now deprecated since it is a break of the development workflow due to the use of a different function than url_for(), which is the default for url handling in flask.

Since v1.1.0 it is possible to use the default url_for() function also for flask assets::
url_for('bower.static', filename='component/path')

Use of this new approach is recommended to all developers and to simplify the migration the bower_url_for() function will stay available for a while; though it can be disabled to help migrating (see BOWER_KEEP_DEPRECATED)

Release History

Release History

This version
History Node


History Node


History Node


History Node


History Node


History Node


History Node


Download Files

Download Files

Download the file for your platform. If you're not sure which to choose, learn more about installing packages.

File Name & Checksum SHA256 Checksum Help Version File Type Upload Date
Flask_Bower-1.3.0-py2-none-any.whl (7.6 kB) Copy SHA256 Checksum SHA256 2.7 Wheel Jul 12, 2017
Flask_Bower-1.3.0-py3-none-any.whl (7.6 kB) Copy SHA256 Checksum SHA256 3.6 Wheel Jul 12, 2017
Flask-Bower-1.3.0.tar.gz (4.9 kB) Copy SHA256 Checksum SHA256 Source Jul 12, 2017

Supported By

WebFaction WebFaction Technical Writing Elastic Elastic Search Pingdom Pingdom Monitoring Dyn Dyn DNS Sentry Sentry Error Logging CloudAMQP CloudAMQP RabbitMQ Heroku Heroku PaaS Kabu Creative Kabu Creative UX & Design Fastly Fastly CDN DigiCert DigiCert EV Certificate Rackspace Rackspace Cloud Servers DreamHost DreamHost Log Hosting