FYI…
This blog is cutting of the entire command line. In order to find it, I had to view source.

For those with the same problem, the path to the install.py script is:

/Library/Google/GoogleSoftwareUpdate/GoogleSoftwareUpdate.bundle/
Contents/Resources/GoogleSoftwareUpdateAgent.app/
Contents/Resources/install.py

(as noted above, you may have this installed under your home directory, instead. if so, just precede the path above with ~ )