c:\Users\Username\Documents\maya\2019\scripts\maya_comp_grids\
c:\Users\Username\Documents\maya\2019\scripts\comp_grids_launcher.py



shelf (py)



import sys
[sys.modules.pop(m) for m in list(sys.modules) if m.startswith('maya_comp_grids')]
import comp_grids_launcher
comp_grids_launcher.show()



or

import comp_grids_launcher
comp_grids_launcher.show()

