$ pip install -U virtualenv
$ virtualenv --python=$(which python2.7) $TMPDIR/scheduler
$ source $TMPDIR/scheduler/bin/activate
$ pip install -r requirements.txt -t lib

Deployment

Run:

$ appcfg.py --version $(date '+%Y%m%dt%H%M%S') update .
XX:XX PM Application: positive-cocoa-90213; version: 1
XX:XX PM Host: appengine.google.com
XX:XX PM Starting update of app: positive-cocoa-90213, version: 1
XX:XX PM Getting current resource limits.
Your browser has been opened to visit:

    https://accounts.google.com/o/oauth2/auth?scope=...

If your browser is on a different machine then exit and re-run this
application with the command-line parameter

  --noauth_local_webserver

Authentication successful.
XX:XX PM Scanning files on local disk.
XX:XX PM Scanned 500 files.
XX:XX PM Scanned 1000 files.
XX:XX PM Cloning 1220 application files.
XX:XX PM Uploading 28 files and blobs.
XX:XX PM Uploaded 28 files and blobs.
XX:XX PM Compilation starting.
XX:XX PM Compilation completed.
XX:XX PM Starting deployment.
XX:XX PM Checking if deployment succeeded.
XX:XX PM Will check again in 1 seconds.
XX:XX PM Checking if deployment succeeded.
XX:XX PM Will check again in 2 seconds.
XX:XX PM Checking if deployment succeeded.
XX:XX PM Will check again in 4 seconds.
XX:XX PM Checking if deployment succeeded.
XX:XX PM Deployment successful.
XX:XX PM Checking if updated app version is serving.
XX:XX PM Completed update of app: positive-cocoa-90213, version: 1
XX:XX PM Uploading cron entries.

Go to console.cloud.google.com > Weave Integration Tests (positive-cocoa-90213) > AppEngine > Versions and ensure traffic is being directed to the newly deployed version.
Click on Tools > Logs, and ensure the application is behaving well.