An electronic and manual lock assembly having a lock housing, a mechanical lock, an electric motor, and a shackle having a pair of legs. The shackle can be unlocked relative to the housing by having one leg pivotally connected with the housing and the other leg rotated out of the housing. The lock includes a first stop member that prevents one leg from being rotated out of the housing. The first stop member is moveable as a result of unlocking the mechanical lock. The lock includes a second stop member that prevents one of the legs from being rotated out of the lock housing and is moveable as a result of operating the electric motor. The first stop member and the second stop member are independently moveable by the mechanical lock and the electric motor.