When installing flower==0.9.2 from PYPI its installing tornado-6.0.1.
I see in the code base we have the condition to install tornado version less than 6.0.0.
When trying to install from git repo code base it seems to be fine.
Thanks.
In requirements of release 0.9.2 there is "tornado>=4.2.0"
https://github.com/mher/flower/blob/v0.9.2/requirements/default.txt
So you should add
tornado>=4.2.0,<6.0.0
in you project or install flower via git repo.
And maintainer of flower should release new flower with requirements fix.
https://github.com/mher/flower/issues/878#issuecomment-469195853
A new flower version has been uploaded to pypi
Most helpful comment
In requirements of release 0.9.2 there is "tornado>=4.2.0"
https://github.com/mher/flower/blob/v0.9.2/requirements/default.txt
So you should add
tornado>=4.2.0,<6.0.0
in you project or install flower via git repo.
And maintainer of flower should release new flower with requirements fix.
https://github.com/mher/flower/issues/878#issuecomment-469195853