# File handling
# Retail shop billing
import sys
import math
stock=None
order=None
try:
stock = open(sys.argv[1],"r")
# create dictionary
PriceList={}
for line in stock:
item,price = line.split()
PriceList[item]=int(price)
# print(PriceList)
billamt=0
for i in range(2,len(sys.argv)):
order = open(sys.argv[i],"r")
print("S.no\tItem\t\tRate\tQuantity\tAmount")
i=1
for line in order:
item,qty=line.split()
price = int(qty)*PriceList[item]
print(i,"\t",item.ljust(10),"\t",PriceList[item],"\t",int(qty),"\t\t",price)
billamt = billamt+price
i+=1
print("Total Amount =", billamt)
cgst = round(billamt*.09,2)
sgst = round(billamt*.09,2)
print("cgst =",cgst)
print("sgst =",sgst)
print("Net Amount =",math.floor(billamt+cgst+sgst))
print("**"*30)
except IOError as e:
print("File opening error : ", e)
except:
print("unknown error")
else:
print("\nThank you for shopping with us\n")
print("**"*30)
finally:
if(stock):
stock.close()
if(order):
order.close()
"""
Sample output:
input file: (3)
ShopPricelist.txt
Walnut 700
Figs 520
Raisins 400
Chashewnut 680
Almond 700
Pistachio 1400
Dates 440
Apricot 650
Kiwi 680
Cardamon 3000
Pepper 480
custorder1.txt
Walnut 1
Raisins 4
Almond 7
Dates 2
custorder2.txt
Apricot 2
Kiwi 4
Cardamon 5
Pepper 3
>python retailshopbilling.py ShopPricelist.txt custorder1.txt custorder2.txt
S.no Item Rate Quantity Amount
1 Walnut 700 1 700
2 Raisins 400 4 1600
3 Almond 700 7 4900
4 Dates 440 2 880
Total Amount = 8080
cgst = 727.2
sgst = 727.2
Net Amount = 9534
************************************************************
S.no Item Rate Quantity Amount
1 Apricot 650 2 1300
2 Kiwi 680 4 2720
3 Cardamon 3000 5 15000
4 Pepper 480 3 1440
Total Amount = 20460
cgst = 1841.4
sgst = 1841.4
Net Amount = 24142
************************************************************
Thank you for shopping with us
************************************************************
"""
