python,python-2.7,python-3.x , i want to calculate data of python written in a file but i don't know what to do


i want to calculate data of python written in a file but i don't know what to do

Question:

Tag: python,python-2.7,python-3.x

File data:

nims 12 100
dettol 42 100
pycharm 30 500
getz 25 455

Code:

cart=[]
with open("C:\\Users\\azhar\\PycharmProjects\\final\\data.txt", "r") as T:
   for a in range(0,20):
       cart.append(T.readline())
   print(cart)

Description

here nims is a medecine name and 12 is the quantity of that medicine and 100 is price per quantity i want to calculate bill and want to less the quantity so what should i do for this???


Answer:

First of all we iterate over each line in the file and assuming that each line has only 3 entries separated by space, we extract name, quantity and price of each commodity , and these are stored as strings, to apply mathematical operations we convert them to integers (you can convert to float if you want to ) and then multiply quantity with the price adding them all up in the total_price.

total_bill = 0
with open("C:\\Users\\azhar\\PycharmProjects\\final\\data.txt", "r") as T:
   for line in T.readlines():
       name, qty, price = line.split()
       total_bill+= int(qty)*int(price)
print total_bill

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