Prgrm_1

def billfunctions(tariff):
    if (tariff == "LT-I"):
         readings = calcLTI_input()
         consumption =final_read-intial_read
         total_cost = calcLTI(consumption, con_type)
         print (total_cost)


def calcLTI_iput():
    consumption = int(raw_input("If you know the exact consuption, please enter the value and leave other two entires empty, else leave this empty") or "0")
    init_read = int(raw_input("Please enter the intial reading") or 0)
    final_read = int(raw_input("Please enter the final reading") or 0)
    type_of_conction = int(raw_input("Please enter 3 for 3Phase connection and 1 for single phase leaving empty will be traseted as signle phase connection") or 1)
    readings = [consumption, init_read, final_read, type_of_conction]
    return readings