JSON object must be str, not 'bytes' error when using python3

[chinyeungli]

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

I have the above error when using Python 3 in gen to fetch license.

After some investigation, it seems the problem is at
https://github.com/nexB/aboutcode-toolkit/blob/280-python3-cleanup/src/attributecode/api.py#L66

response_content = response.read()

The fix is likely this: https://stackoverflow.com/a/32250010
i.e.

response_content = response.read().decode('utf-8')

However, I'll like to have your input on this.

[tdruez]

@chinyeungli before jumping onto a fix, could you add a simple unit test that expose the issue?

[chinyeungli]

will do