Account authentication for pushing to code.google.com: what password?

It's not immediately obvious that you shouldn't just use your gmail account password when submitting code to code.google.com.  While you can change your google code settings to do that, the default is to use the auto-generated password available at https://code.google.com/hosting/settings.  If you're using google two-factor authentication the auto-generated password is probably your only option.