Issue with "for" and lists

Question

I am trying to have the user input delivery information and use the for loop. I keep getting an IndexError: list assignment index out of range

I want it to print and have the user input each item then after ask if info is correct and if not return them. However, I cannot get to for statement correct after trying multiple ways. Thank you.

address = []
address_info = ('Name:', 'Address:', 'City:', 'State', 'Zip Code')

print('***DELIVERY METHOD***')
print('Please enter the info below from customer...')
for x in address_info:
    address[x] = input(address_info[x])
    x += 1

You can't assign to indices that don't exist. You need to *`append()`* to add more elements, or start your input list with at least `len(address_info)` elements. — Martijn Pieters, Apr 25 '17 at 15:01
Change the `address = []` to `address = {}` and on the for loop change `input(address_info[x])` to `input(x)` and remove the line `x += 1` — Szabolcs, Apr 25 '17 at 15:02

Raymond Hettinger · Answer 1 · 2017-04-25T15:03:25.067

-1

Try using append-logic instead of using indexing.

address = []
address_info = ('Name:', 'Address:', 'City:', 'State', 'Zip Code')

print('***DELIVERY METHOD***')
print('Please enter the info below from customer...')

for info in address_info:     # these are the values not indicies
    user_input = input(info)
    address.append(user_input)

There were to issues in your original code. First, the for-loop will loop over the values from address_info rather than the indicies. Second, the result list needs to be grown by appends; you can't make an indexed assignment until the list already has some value at the the position that can be replaced.

edited Apr 25 '17 at 15:03

answered Apr 25 '17 at 15:02

Raymond Hettinger

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Thank you! That worked out well... I figured I was overthinking the code again... – Matthew Phaneuf Apr 25 '17 at 15:27
@MatthewPhaneuf Glad to have helped. I just gave you an upvote because I think this was a good question that has an interesting answer. – Raymond Hettinger Apr 26 '17 at 20:25

Issue with "for" and lists

1 Answers1