How to check if a key exists in an inner dictionary inside a dictionary in python?

Question

There is a python dictionary:

a = {b:{c:{\"x\":1, \"y\":2, \"z\":3}}}

I want to know if a[b][c][\"z\"] exists, but yet I don\'t kn

Answer 1

IF you can't use an exception for some reason (eg. lambda func, list comprehension, generator expression etc)

value = a.get(b, {}).get(c, {}).get("z", None)

But normally you should prefer to use the exception handler