Something wrong with this file program?

Question

i have a program like this:

def facilities():
     total_rate=vrates=funrate=rates5=0
     def food():
           #files are used
           rates5=0
           # calculate the rate and store the total rate in rates5
     def recreation():
            #files are used
             funrate=0
            # calculate the rate and store the total rate in funrate
     def transport():
           #files are used
           vrates=0
           # calculate the rate and store the total rate in vrates
     food()
     recreation()
     transport()
total_rate=rates5+vrates+funrate
print"The total amount=",total_rate
facilities() 

at the end i want to calculate the sum of funrate,vrates and rates5.eg: funrate=100,vrates=200,rates5=300,then total_rate=600,but when i run the program, it comes like The total amount =0. either nothing comes or total_rate=0 comes. is there anything wrong with the declaration??

actually the real program is very long so i have shortened it to get the main idea. i have nested functions as that ia part of the program. please help!

Answer 1

Let me know if this approach works for you:

total_rate = 0
vrates = 0
funrate = 0
rates5 = 0


def food():
    global rates5
    # files are used
    rates5 = 1
    # calculate the rate and store the total rate in rates5


def recreation():
    global funrate
    # files are used
    funrate = 2
    # calculate the rate and store the total rate in funrate


def transport():
    global vrates
    # files are used
    vrates = 3
    # calculate the rate and store the total rate in vrates

food()
recreation()
transport()
total_rate = rates5 + vrates + funrate
print"The total amount =", total_rate

another approach is this :

total_rate = 0
vrates = 0
funrate = 0
rates5 = 0

def facilities():
    global total_rate, vrates, funrate, rates5

    def food():
        global rates5
        # files are used
        rates5 = 1
        # calculate the rate and store the total rate in rates5

    def recreation():
        global total_rate, vrates, funrate, rates5
        # files are used
        funrate = 2
        # calculate the rate and store the total rate in funrate

    def transport():
        global total_rate, vrates, funrate, rates5
        # files are used
        vrates = 3
        # calculate the rate and store the total rate in vrates

    food()
    recreation()
    transport()

facilities()

total_rate=rates5 + vrates + funrate
print "The total amount=", total_rate

And a structured class solution for the problem:

class Facilities(object):
    def __init__(self):
        self.total_rate = 0
        self.vrates = 0
        self.funrate = 0
        self.rates5 = 0

    def food(self):
        # files are used
        self.rates5 = 1
        # calculate the rate and store the total rate in rates5
        return self.rates5

    def recreation(self):
        # files are used
        self.funrate = 2
        # calculate the rate and store the total rate in funrate
        return self.funrate

    def transport(self):
        # files are used
        self.vrates = 3
        # calculate the rate and store the total rate in vrates
        return self.vrates

    def get_total_rate(self):
        return self.food() + self.recreation() + self.transport()

facilities_obj = Facilities()
total_rate = facilities_obj.food() + facilities_obj.recreation() + facilities_obj.transport()
# another option
total_rate = facilities_obj.get_total_rate()
print "The total amount =", total_rate