Can't a word from shopping cart - Python

Question

I'm working on simple shopping cart code that reads and writes from a text file call Shopping Cart.txt.

I'm able to write to the file but not able to delete from it. The code doesn't generate any error while deleting but doesn't delete neither. Can someone point me to a right direction?

Here's the code:

file = open('/Users/dsmith/Shopping list.txt', 'w')
file.write("Shopping list\n")
file.close()

print("Welcome to the shopping list creator")
print()

def shoppinglist():
    print('''Choose 1 to view your shopping list.
Choose 2 to add an item to your shopping list.
Choose 3 to delete an item from your shopping list.
Choose 4 to exit the program.''')
    print()
    choice = int(input("Enter your choice: "))

    if choice == 1:
        shoppinglist_file = open('/Users/dsmith/Shopping list.txt')
        print()
        print(shoppinglist_file.read())
        print()
        shoppinglist_file.close()
        shoppinglist()

    elif choice == 2:
        shoppinglist_file = open('/Users/dsmith/Shopping list.txt', 'a')
        print()
        thing_to_add = str(input("What would you like to add to your shopping list? "))
        shoppinglist_file.write("%s" % (thing_to_add))
        shoppinglist_file.close()
        print()
        shoppinglist()

    elif choice == 3:
        shoppinglist_file = open('/Users/dsmith/Shopping list.txt')
        shoppinglistfile_list = shoppinglist_file.readlines()
        print()
        print(shoppinglistfile_list)
        del_item = str(input)
        print(del_item)
        shoppinglistfile_list.remove(del_item)
        print()
        shoppinglist()

    elif choice == 4:
        print()
        print("Thank you for using ths program")
        print("--------")

    else:
        print()
        print("Please enter a valid option")
        print()
        shoppinglist()


shoppinglist()

Make an [MCVE](https://stackoverflow.com/help/mcve). It will help you and help us help you. — wjandrea, Aug 21 '18 at 20:26
https://stackoverflow.com/questions/6159900/correct-way-to-write-line-to-file — sniperd, Aug 21 '18 at 20:37
This is not helpful. How I delete a word that was entered by user form my shopping cart? — Dennis Callagher, Aug 21 '18 at 20:38

score 0 · Accepted Answer · answered Aug 21 '18 at 20:51

After deleting from the file, you do not save your changes. Adding the code after

shoppinglistfile_list.remove(del_item)

should help.

shoppinglist_file.close()
shoppinglist_file = open('/Users/dsmith/Shopping list.txt', 'w')
shoppinglist_file.write(shoppinglistfile_list)
shoppinglist_file.close()

The above code re-opens the file in write mode, then writes the shopping list back except the deleted word.

Can't a word from shopping cart - Python

1 Answers1