Install & Compatibility
Where this runs
tested against v0.2 · pip install
no network on importno background threads
Install × environment matrix
Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux
muslpy 3.10–3.910 runs
installs and imports cleanly · install 0.0s · import 0.484s · 27.9MB
glibcpy 3.10–3.910 runs
installs and imports cleanly · install 4.5s · import 0.446s · 28MB
26MB installed
● package 26MB
Code
Verified usage
Verified import paths — ran on the pinned version, not inferred.
Silk
✓ from flask_silk import Silk
✗ from flask.ext.silk import Silk
The `flask.ext` namespace was deprecated in Flask 0.8 and removed in Flask 1.0. Modern Flask applications should use direct imports from the extension's package name.
url_for('silkicon', filename='bug.png')
✓ from flask import Flask, url_for
# ... app setup ...
# silk = Silk(app)
# ...
icon_url = url_for('silkicon', filename='bug.png')
The `silkicon` endpoint is registered by Flask-Silk to serve the icons.
This quickstart initializes a Flask application and integrates Flask-Silk. It then defines a route that uses `url_for('silkicon', filename='bug.png')` to generate a URL for a Silk icon, which is embedded in the HTML response.
from flask import Flask, url_for
from flask_silk import Silk
app = Flask(__name__)
silk = Silk(app) # Initialize Flask-Silk with your Flask app
@app.route('/')
def index():
bug_icon_url = url_for('silkicon', filename='bug.png')
return f'<h1>Hello, Flask-Silk!</h1><img src="{bug_icon_url}" alt="Bug Icon">'
if __name__ == '__main__':
app.run(debug=True)
Debug
Known issues
breakingThe `flask.ext` import mechanism, commonly used by older Flask extensions like Flask-Silk, was deprecated in Flask 0.8 and removed in Flask 1.0. Direct imports from the package name are now required, e.g., `from flask_silk import Silk`.fixUpdate import statements from `from flask.ext.silk import Silk` to `from flask_silk import Silk`.
affects: Flask 1.0 and later
breakingFlask-Silk is explicitly marked as 'not maintaining' by its author on GitHub and has not been updated since March 2013 (version 0.2). It is highly probable that it is incompatible with recent versions of Flask (e.g., Flask 2.x, 3.x) and Python (e.g., Python 3.8+).fixConsider alternatives for serving static icons or manually integrating the Silk icon set into your Flask application. If absolutely necessary to use, pin Flask and Python versions to very old compatible releases (e.g., Flask < 1.0, Python < 3.8).
affects: All Flask versions > 0.9, Python versions > 3.7
gotchaThe `url_for('silkicon', filename='...')` endpoint expects specific filenames for the Silk icons (e.g., 'bug.png'). Incorrect filenames will result in 404 Not Found errors for the icon.fixEnsure the `filename` argument passed to `url_for('silkicon', ...)` exactly matches an existing icon file provided by the Silk icon set. affects: All versions
Errors
Common errors & fixes
ImportError: cannot import name 'silk' from 'flask.ext'
Attempting to import Flask-Silk using the deprecated `flask.ext` namespace, which was removed in Flask 1.0.
fixChange the import statement to `from flask_silk import Silk`.
werkzeug.exceptions.NotFound: 404 Not Found: The requested URL was not found on the server.
This error can occur when `url_for('silkicon', filename='...')` is called, but Flask-Silk's blueprint or the `silkicon` endpoint is not properly registered or the requested filename does not exist.
fixEnsure `silk = Silk(app)` (or `Silk(blueprint)`) is correctly called during application setup. Verify that the `filename` provided to `url_for` corresponds to an actual Silk icon file.
Upgrade
Version history
0.2latest on PyPI · released Mar 25, 2013
Audit
Dependencies
FlaskrequiredCore dependency for any Flask extension.
Resources
No resource links recorded.