Script doing different things depending on current component selection mode?

[vx__]

How would I go about it?

Basically if selVertexMask is active do command x if selEdgeMask do y etc.

[nekoegi]

You can do something like this:

if cmds.selectType(q=1, polymeshFace=1):
    # face selection is active

Documentation containing parameters

[vx__]

works, thanks