This git repository helps you get up and running quickly w/ a Flask installation on OpenShift.
Create an account at http://openshift.redhat.com/
Create a python-2.7 application
rhc app create -a flask -t python-2.7
Add this upstream flask repo
cd flask
git remote add upstream -m master https://github.com/mrunalp/openshift-python27-flask-quickstart.git
git pull -s recursive -X theirs upstream master
Then push the repo upstream
git push
That's it, you can now checkout your application at:
http://flask-$yournamespace.rhcloud.com
To get more log messages in your openshift logs please add the following line to your code
app.config['PROPAGATE_EXCEPTIONS'] = True
To read more about logging in Flask please see this email
http://flask.pocoo.org/mailinglist/archive/2012/1/27/catching-exceptions-from-flask/