Question

Write a program to enter the following records in a binary file:

Item No	integer
Item_Name	string
Qty	integer
Price	float

Number of records to be entered should be accepted from the user. Read the file to display the records in the following format:

Item No:
Item Name :
Quantity:
Price per item:
Amount: (to be calculated as Price * Qty)

Answer 1

Writing records in a Binary File -

import pickle
 bin_file = open("Items.dat", "wb")
 record = {}
 wish = "Y"
 count = 1
 while wish.upper() == "Y": 
     print("Enter Following details of Item #",count)
     item_no = int(input("Enter Item Number : "))
     item_name = input("Enter Item Name  : ")
     quantity = int(input("Enter Quantity : "))
     price = float(input("Enter Price per Item : "))
     record['itemno"] = item_no
     record['itemname"] = item_name
     record['quantity"] = quantity 
     record['price"] = price
     pickle.dump(record, bin_file)
     wish = input("Want to Add More Records (Y/N) : ")
     count = count + 1
 bin_file.close()

Reading records from a Binary File -

import pickle
 bin_file = open("Items.dat", "rb")
 record = {}
 count = 1
 try:
     while True: 
        print("Item #",count,"Details")
        record = pickle.load(bin_file)
        print("Item Number : ",record['itemno'])
        print("Item Name  : ",record['itemname'])
        print("Quantity : ",record['quantity'])
        print("Price : ", record['price'])
        print("Amount : ",record['quantity'] * record['price'])
        count = count + 1
   except EOFError:
       bin_file.close()