def simxSetJointTargetVelocity(clientID, jointHandle, targetVelocity, operationMode):
    '''
    Please have a look at the function description/documentation in the V-REP user manual
    '''

    return c_SetJointTargetVelocity(clientID, jointHandle, targetVelocity, operationMode)
Please have a look at the function description/documentation in the V-REP user manual