DOn't understand KeyError:

Question

I am trying to create an interactive dictionary. The file data.json is where the definition of the words are stored. I expected the code to look up the definition of a word as entered by the user and print it out in the terminal.

import json

data = json.load(open("data.json", 'r'))
item = input("Enter word you are looking for: ")
data["%s", item]
print(data)

However I keep getting the following error

Enter word you are looking for: rain
Traceback (most recent call last):
  File "C:\Users\Hassan\eclipse-workspace\FTS\src\FirstModule.py", line 10, in <module>
    data["%s", item]
KeyError: ('%s', 'rain')

I don't understand what is causing the error or how to fix it. Can someone please point out where I am making the mistake and suggest a possible solution.

Thanks in advance

`data["%s", item]` cannot be a valid key for a JSON object. Did you mean only `data[item]`? — UnholySheep, Jan 05 '19 at 22:19
I believe this SO question might have what you're looking for https://stackoverflow.com/questions/2687225/json-keyerror-with-json-loads — semore_1267, Jan 05 '19 at 22:20

score 1 · Answer 1 · answered Jan 05 '19 at 22:20

1

Just change data["%s", item] to data[item]. You have a string stored in the item variable, and you want that to be used as the index into your dictionary. That should resolve the key error.

answered Jan 05 '19 at 22:20

alanc10n

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score 0 · Answer 2 · answered Jan 05 '19 at 22:23

0

That KeyError means just that the tuple ('%s', 'rain') does not exists in your dictionary.

Now you must ask yourself why would you want such object (that tuple) to be a key in your dictionary and why is not present yet.

answered Jan 05 '19 at 22:23

Jorge Lavín

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DOn't understand KeyError:

2 Answers2