Access dict key and return None if doesn't exist

Question

In Python what is the most efficient way to do this:

my_var = some_var[\'my_key\'] | None

ie. assign some_var[\'my_key\'] to

Answer 1

Assuming some_var is a dictionary, you need dict.get():

my_var = some_var.get('my_key')

This result defaults to None if my_key is missing, but you can supply a different default:

my_var = some_var.get('my_key', default)