How to extract dictionary single key-value pair in variables

Question

I have only a single key-value pair in a dictionary. I want to assign key to one variable and it\'s value to another variable. I have tried with below ways but I am getting

Answer 1

If you just want the dictionary key and don't care about the value, note that (key, ), = foo.items() doesn't work. You do need to assign that value to a variable.

So you need (key, _), = foo.items()

Illustration in Python 3.7.2:

>>> foo = {'a': 1}
>>> (key, _), = foo.items()
>>> key
'a'
>>> (key, ), = foo.items()
Traceback (most recent call last):
  File "", line 1, in 
ValueError: too many values to unpack (expected 1)