Sometimes when developing a new App Engine app, you want to start fresh with the datastore, wiping everything. Unfortunately, this can be a cumbersome process with the existing interface.

Nuke is a "add-in" to the admin panel that lets you delete all entities of a specific kind, or all entities of all kinds with a button click.

1. Copy bulkupdate into your application's root directory: git clone git://github.com/Arachnid/bulkupdate.git
2. Copy nuke into your application's root directory: svn export http://jobfeed.googlecode.com/svn/trunk/appengine/nuke

3. Modify your app.yaml to include the following (this will install both nuke and bulkupdate): ``` admin_console: pages:

   • name: Bulk Update Jobs url: /_ah/bulkupdate/admin/

   • name: Nuke url: /_ah/nuke/

handlers: - url: /_ah/queue/deferred script: $PYTHON_LIB/google/appengine/ext/deferred/handler.py login: admin

• url: /_ah/bulkupdate/admin/.* script: bulkupdate/handler.py login: admin

• url: /_ah/nuke/.* script: nuke/nuke.py login: admin ```

  1. Redeploy your application appcfg.py update .
  2. Nuke your datastore
     • Nuke expects all of your models to be defined in a file named models.py (example) in your root application directory. If this is not the case, you may edit the nuke.py script as desired.