When you need to learn something about Python and you never wrote a line:
Dive into Python:
When you mess up a file and want it back to what it was, cd into the directory and:
git checkout HEAD -- gridwidget.py
When you want an activity that sugar-jhbuild does not bring down:
 Using Eclipse with OLPC
When you want to start a new activity project using another activity as the base:
Create a new pydev project File->import General->File System Find your baseline activity's folder
When you want Eclipse to see all the OLPC imports:
Project->Properties select PyDev - PYTHONPATH in the External Source Folders Pane button Add source folder find the sugar-jhbuild/build/lib/python2.5/site-packages folder select button Apply select button OK Project->Clean..
When the Pydev IDE does not recognize parts of your objects:
Window->Preferences select Pydev->Interperter - Python in the Forced builtin libs panel button New Enter the name of the object missing the pieces select button button OK select button Apply select button OK Project->Clean..
When you want to build your project's xo file for distribution
# assumes you already setup this symbolic link with ./setup.py dev pushd ~/Activities/project-activity .setup.py dist popd