AttributeError: 'NoneType' object has no attribute 'encode'

[guettli]

According to #91 this was fixed in 1.9.94, but I am still seeing this (or similar) error message:

Traceback (most recent call last):
 File "/home/modlink_cok_q/src/modlink/modlink/models/remote.py", line 103, in call
 return self.connection.call(*args, **kwargs)
 File "src/pyrfc/_pyrfc.pyx", line 409, in pyrfc._pyrfc.Connection.call
 File "src/pyrfc/_pyrfc.pyx", line 1641, in pyrfc._pyrfc.fillFunctionParameter
 File "src/pyrfc/_pyrfc.pyx", line 1692, in pyrfc._pyrfc.fillVariable
 File "src/pyrfc/_pyrfc.pyx", line 1668, in pyrfc._pyrfc.fillTable
 File "src/pyrfc/_pyrfc.pyx", line 1653, in pyrfc._pyrfc.fillStructureField
 File "src/pyrfc/_pyrfc.pyx", line 1710, in pyrfc._pyrfc.fillVariable
 File "src/pyrfc/_pyrfc.pyx", line 1817, in pyrfc._pyrfc.fillString
AttributeError: 'NoneType' object has no attribute 'encode'

If the string is optional, I think it should be valid do pass in my_string=None which should have the same effect as don't providing my_string.

If it is not optional and the RFC has a default for it, the default should get used, if you provide my_string=None

[bsrdjan]

Thanks for the feature request. None is rejected because users appreciate catching type errors when None unintentionally passed instead of string, or any other parameter/variable type. Skipping None values in inbound processing could be considered as option, in future releases. The error message is now more informative.