Let's say something like this is being returned.

dictionary update sequence element #0 has length 1; 2 is required

I got this when attempting to create a dictionary using dict.

#!/usr/bin/python3
my_dictionary = dict("foo=bar")

Basically, this was just a syntax error. I had to update my Python script so that the key in the dictionary was not wrapped in quotes and the value was wrapped in quotes.

#!/usr/bin/python3
my_dictionary = dict(foo="bar")