Michele's wiki/blog

Spotlight importers (such as the Python source code importer from Toxic Software) can be installed for single users by browsing the package to the Archive.pax.gz, and copying the .mdimporter file to ~/Library/Spotlight.

It is then necessary to tell Spotlight to index files corresponding to the new importer, with something like

/usr/bin/mdimport -r ~/Library/Spotlight/Python\ Metadata\ Importer.mdimporter