FAQ: Learn Python: A Day at the Supermarket - Keeping Track of the Produce

faq
#1

This community-built FAQ covers the “Keeping Track of the Produce” exercise in Codecademy’s lessons on Python.

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#2

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split this topic #4

2 posts were split to a new topic: What does %s and % do

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2 posts were split to a new topic: Dictionary order

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3 posts were split to a new topic: How Does This Work?

split this topic #7

2 posts were split to a new topic: Why don’t we need to wrap stock[key] or prices[key] in str()?

Why don’t we need to wrap stock[key] or prices[key] in str()?
split this topic #8

2 posts were split to a new topic: Am getting an error about the the “Orange key”

#9

In writing the following code:

prices = {“banana”: 4,“apple”: 2,“orange”: 1.5,“pear”: 3}

stock = {“banana”: 6, “apple”: 0, “orange”: 32, “pear”: 15}

for food in prices:
print food
print “price: %s” % prices[food]
print “stock: %s” % stock[food]

How was I supposed to know that “apple” was categorized and can be called with the term “food”? There is no indication that this is how the info was stored.

2 Likes
#10

I totally agree,
My code was like this
prices ={“banana”:4,“apple”:2,“orange”:1.5,“pear”:3}
stock = {“banana”:6,“apple”:0,“orange”:32,“pear”:15}
for key in prices:
print key
print “price: %s” % prices[key]
print “stock: %s” % stock[key]
And it worked, yet it gave me the exercise as failed.

#11

so this was what i used to get the “print EXACTLY the following format” format, but it marked it as fail

image

and when i hit solution, it gave a format of

apples
price:
stock:

which isn’t in the EMPHASIZED IN CAPS exact format as listed in the instructions. Should fix your instructions to reflect the answer or fix your answer to reflect the instructions

10 Likes
#12

Still Broken i had the same exact code as the solution and still gave me a fail

1 Like
#13

Where is the variable ‘food’ coming from in this exercise? It seems like it appears without definition.
thanks

#14

It exists only in the function as the declared formal parameter. That parameter accepts any list passed to the function as a call argument. We pass in shopping_list which is referred to by the parameter name within the function. It is still referring to the same data structure, just by a different local name.