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Python

Posted by john larson
john larson
16,594 Points

Practicing saving a list to a txt file but...

def save(shopping_list):
    # list to a string for open
    shopping_list = " ".join(shopping_list) 
    # open/create w/ "w" permission
    shop_obj = open("shopping_list.txt", "w")
    # pass the string list into the write fn
    shop_obj.write(shopping_list)
    shop_obj = open("shopping_list.txt", "r+")
    shop_obj = shop_obj.read()
    return shop_obj


def retrive(saved_list):
    count = 0
    saved_list = saved_list.split()
    for item in saved_list:
        count += 1
        print("Shopping list {}: ".format(count), item)


shopping_list = []
#call save, store in var
saved_list = save(shopping_list) 
#call retrive
#retrive(saved_list)


while True:
    items = input("Add an item? ").lower().capitalize()
    if items == "S":
        retrive(saved_list) # <-- entering in S does not call  retrive()
    else:
        shopping_list.append(items)
        print(shopping_list)
Samuel Ferree
Samuel Ferree
31,723 Points

Can you post the function definition?

did you mean to misspell retrieve?

john larson
john larson
16,594 Points

I thought I looked up retrieve. At least I think I was consistent in my spelling error.

  • I can get my save and retrieve functions to work if I do a static list. When I add things by input it just doesn't seem to be happening.
Samuel Ferree
Samuel Ferree
31,723 Points

Try print items after you input statment to make sure .lower().capitalize() is working the way you expect it to.

items = input("Add an item? ").lower().capitalize()
print(items)

the if statment looks correct

john larson
john larson
16,594 Points

Thanks Samuel, I didn't correct it yet but I think you pointed me in the right direction. Now I'm getting indent errors, which it doesn't look like I do but I'm closer to knowing where to look. I think. If you move your comment to an answer I'll give you a thumbs up :D