[u'3D Analyst Tools(3d)',
>>> [i for i in arcpy.ListToolboxes() if i.endswith('analysis)')]
So far, everythings looking good.
You may think: Ok, it's little bit complicated. Why don't you use wildcards?
>>> arcpy.ListToolboxes( '*analysis)' )
No string ends with "analysis)"??. Did I missed something?
>>> arcpy.ListToolboxes( '*)' )
UUPS!! No string ends with ")". Should I call my ocoulist ??
Parenthesis are for ArcGIS "signs non gratia": Good enough for printing but not grand enough to receive attention by nobly arcpy-wildcards. But, thanks God!, my beloved core Python is a democratic Python and it's more logical.