How to Print items in a List of Strings using the format method in Python 3

Question

Provided is a list of data about a store’s inventory where each item in the list represents the name of an item, how much is in stock, and how much it costs. Print out each item in the list with the same formatting, using the .format method (not string concatenation). For example, the first print statement should read The store has 12 shoes, each for 29.99 USD.

I initialized an index variable, i, to 0 and wrote for loop with a loop variable to go through the contents in the list.

I then have a print statement, that will print "The store has {} {}, each for {} USD." that utilizes the format method to fill in the appropriate values for the bracket. For the format method, I have used i for my index variable to index through the list. I then increment my index variable by 1 for the next loop run until the loop iterates through the list.

inventory = ["shoes, 12, 29.99", "shirts, 20, 9.99", "sweatpants, 25, 15.00", "scarves, 13, 7.75"]

i = 0

for item in inventory:
    print("The store has {} {}, each for {} USD.".format(inventory[i], inventory[i], inventory[i]))
    i += 1

The expected result should be - The store has 12 shoes, each for 29.99 USD.

However, the way my code is written, I'm getting - The store has shoes, 12, 29.99 shoes, 12, 29.99, each for shoes, 12, 29.99 USD.

I'm unclear of how to index correctly when using the format method since I'm working with a list of strings. What do I need to fix to index correctly?

Erik Cederstrand · Accepted Answer · 2020-06-19 05:29:16Z

4

You have a list of strings there, you need to split them into fields:

for item in inventory:
    item_desc, number, cost = item.split(", ")
    print(f"The store has {item_desc} {number}, each for {cost} USD.")

edited Jun 19, 2020 at 5:29

Erik Cederstrand

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answered Apr 18, 2019 at 20:17

brunns

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2 Comments

brunns Over a year ago

You don't need to worry about indices - the loop is already giving you one item at a time.

Ravi Over a year ago

the use of split() and assignment to different variables makes perfect sense and worked! I wouldn't have thought of that, thank you for such a clean solution!

Dharman · Accepted Answer · 2019-12-28 21:54:14Z

1

inventory = ["shoes, 12, 29.99", "shirts, 20, 9.99", "sweatpants, 25, 15.00", "scarves, 13, 7.75"]
for i in inventory:
    ``str1 = []
    str1 = i.split(", ")
    print("The store has {} {}, each for {} USD.".format(str1[1],str1[0],str1[2]))

edited Dec 28, 2019 at 21:54

Dharman♦

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answered Dec 28, 2019 at 21:52

AMI

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1 Comment

Dharman Over a year ago

While this code may solve the question, including an explanation of how and why this solves the problem would really help to improve the quality of your post, and probably result in more up-votes. Remember that you are answering the question for readers in the future, not just the person asking now. Please edit your answer to add explanations and give an indication of what limitations and assumptions apply.

groenhen · Accepted Answer · 2021-02-17 07:29:41Z

0

inventory = ["shoes, 12, 29.99", "shirts, 20, 9.99", "sweatpants, 25, 15.00", "scarves, 13, 7.75"]
for item in inventory:
    item = item.split(",")
    print("The store has{qua} {pro}, each for{price} USD.".format(pro = item[0],qua = item[1] ,price = item[2]))

edited Feb 17, 2021 at 7:29

groenhen

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answered Feb 17, 2021 at 7:06

Muhammad Talha

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