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

Question

I am returning 5 for my computational field old_default_code, and I am getting the following error:

ValueError: dictionary u

Answer 1

The most common way to come across this error is when you have a type casting error, for example,

MWE to regenerate the error -

str_var = 'abc'
str_var = dict(str_var)

Running this gives the error ValueError: dictionary update sequence element #0 has length 1; 2 is required

Hope this helps.