question

Now I was looking for similar problems on the forum, I found that adding time.sleep(2) before self.media.close() in close() method might helps. I check it on few runs and it seems to work fine now I have got DisconnectedRequest in the console but then the program ends and I can type another command in the console.

Oo thank you, I didn't know about this way to save data.

So is it possible to 'add' values to the whole object of 'data', 'register'...? If yes, how?
Or I have to do this by selecting each OBIS code and then reading the value?
I saw you add in another topic code to read each obis code like this:
in ReadAll()
 it = GXDLMSRegister("1.1.1.8.1.255")
 # Read scaler and unit.
 self.read(it, 3)
# Read value.
self.read(it, 2)
 print( it.value)
but running this I'm facing an error like this "TypeError: can only concatenate str (not "int") to str"

Reading only one value as you show works for me fine, but I rather want to read more value in the program and has it as an output.