AttributeError: 'NoneType' object has no attribute 'to_json' about pyais HOT 6 CLOSED

That's good, thanks!

from pyais.

Hey,

thanks again for the bug report!

This message itself is weird. I have never seen a type zero message. I also can not find any information regarding type zero messages. But they seem to be the same as type 1,2,3. I decided to add support for them with the next release. This message has it's own testcase:

Regarding your general issue: Yes it is true, that some messages return None. This happens if my decoder encounters an unexpected issue. By default it will just return None and continue silently. I would recommend that you do a check for None, before you try to convert it into json.

Kind regards,
Leon

:-)

from pyais.

Thanks,

I have one more b'!AIVDM,1,1,,B,139fgIPP00Pe,0*63'
Probably some cheap device or for testing purposes.
Since the type 0 are not defined it might be better to not process them, maybe you can log them if some debuglevel is set.

When I check whether it is None, I cannot use message = msg.decode().to_json() anymore? That would be sad.
Maybe I'll find a way and send a pull request for a new to_json :-)

Frank

from pyais.

Well, if you really want to keep using this onliner, you could do this:

try:
    msg.decode().to_json()
    # so something 
except AttributeError:
    # handle error

from pyais.

I included the bugfix in the newest release. Feel free to upgrade and tell me how it works for you! 😎

from pyais.

Like it, let's see 👍

from pyais.