"TypeError: the JSON object must be str, not 'bytes'"

[Alan Pierson]

Hi! I'm trying to run GYB on my Synology NAS device, which has Python 3 installed. It seems like GYB should work on the Synology, but I get a TypeError whenever I try to run it. 

In response to the command "python3 gyb.py --email [myemail]@gmail.com --action estimate", I get: 

Traceback (most recent call last):

  File "gyb.py", line 1875, in <module>

    main(sys.argv[1:])

  File "gyb.py", line 1198, in main

    doGYBCheckForUpdates(debug=options.debug)

  File "gyb.py", line 372, in doGYBCheckForUpdates

    release_data = json.loads(c)

  File "/volume1/@appstore/py3k/usr/local/lib/python3.5/json/__init__.py", line 312, in loads

    s.__class__.__name__))

TypeError: the JSON object must be str, not 'bytes'

Can anyone help diagnose? 

Thanks, Alan 

[Jay Lee]

What does:

gyb --version

Show?

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[Jay Lee]

Actually the issue here is GYB required Python 3.6 and you are using 3.5.

Jay

[Alan Crosswell]

The fix is to add .decode("utf-8") and then it will be portable across multiple python versions.

[Alan Pierson]

that's terrific! thank you!!!

[subibro]

Not familiar with Python. How/where would one add .decode("utf-8") ?

[subibro]

Found out myself. Line 372 in gyb.py, change to:

release_data = json.loads(c.decode('utf-8'))

The run the python3 command as instructed in the installation page:

python3 gyb.py --email your...@gmail.com --action estimate

That seemed to solve the issue, no errors.

[Alan Crosswell]

> Actually the issue here is GYB required Python 3.6 and you are using 3.5.

Yes, this is fixed in 3.6 but doesn't hurt to add backward compatibility. It's not always easy for people to know how to upgrade their python version, especially if they are not a python developer, and, in this case, running some sort of appliance OS that is back-level. For example, RHEL 6 only delivers 2.7 and 3.5.

You might want to consider using tox and/or travis to test for these kinds of backwards/forwarded compatibility (python 3.7 is out now!).  Here's an example:

https://github.com/django-json-api/django-rest-framework-json-api/blob/master/tox.ini