Install & Compatibility
Where this runs
tested against v0.16.0 · 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 3.10–3.95 runs
installs and imports cleanly · install 0.0s · import 0.452s · 22.5MB
glibcpy 3.10–3.95 runs
installs and imports cleanly · install 2.1s · import 0.430s · 23MB
21MB installed
● package 21MB
Code
Verified usage
Verified import paths — ran on the pinned version, not inferred.
FlaskView
✓ from flask_classful import FlaskView
✗ from flask.ext.classy import FlaskView
flask.ext.classy is an older/alternative packaging; the correct import is from flask_classful.
route
✓ from flask_classful import route
The route decorator is exported from flask_classful.
Minimal Flask app with a class-based view. Access http://localhost:5000/my-view/ to see 'Hello World!'.
from flask import Flask
from flask_classful import FlaskView
app = Flask(__name__)
class MyView(FlaskView):
def index(self):
return "Hello World!"
MyView.register(app)
if __name__ == "__main__":
app.run()
Errors
Common errors & fixes
AttributeError: module 'flask_classful' has no attribute 'FlaskView'
Incorrect import path; possibly installed a different package or misnamed.
fixUse `from flask_classful import FlaskView`.
ImportError: cannot import name 'FlaskView' from 'flask.ext.classy'
Trying to import from the old `flask.ext.classy` pattern, which is no longer supported.
fixUse `from flask_classful import FlaskView`.
Upgrade
Version history
0.16.0latest on PyPI · released Sep 7, 2023
Audit
Dependencies
flaskrequiredFlask-Classful is an extension for Flask; requires Flask >= 2.2 for v0.16.0.