How to handle keyError in python and continue execution?

Question

My python rest API receives a JSON and extracts the values from keys.

Problem: The program throws a keyError and exits if any one key is not present or if the keys' value is null. The function is not inside a loop.

I want the program to continue execution even if the key is not present.

So, catch the exception with `except`. Or use a form like `.get` that doesn't throw. — Antti Haapala -- Слава Україні, Apr 23 '18 at 02:30
Also, did you try searching Google first? There are so many duplicate QA on Stack Overflow that I don't even know which one to choose. — Antti Haapala -- Слава Україні, Apr 23 '18 at 02:33
Possible duplicate of [json KeyError with json.loads](https://stackoverflow.com/questions/2687225/json-keyerror-with-json-loads) — Sean Dawson, Apr 23 '18 at 02:35

score 0 · Answer 1 · answered Apr 23 '18 at 02:30

The simplest way in Python is:

try:
    extract = json_resp[key]
except KeyError:
    pass

Alternatively you can use get, with a default:

extract = json_resp.get(key, default)

Which fall back to the default if the key isn't present in the dictionary.

1 Answers1