Like BPR said, a simple AND controller will do exactly what you want. If you have to use a Python controller for some reason, this code will work fine.
import bge
cont = bge.logic.getCurrentController()
# check if all sensors are positive
for sens in cont.sensors:
if not sens.positive:
break
# activate all actuators
else:
for actu in cont.actuators:
cont.activate(actu)