HTTPResponse object -- JSON object must be str, not 'bytes'

json python-3.x python-3.4 nexmo
Chevron picture Chevron · Jun 5, 2014 · Viewed 60.2k times · Source

I've been trying to update a small Python library called libpynexmo to work with Python 3.

I've been stuck on this function:

def send_request_json(self, request):
    url = request
    req =  urllib.request.Request(url=url)
    req.add_header('Accept', 'application/json')
    try:
        return json.load(urllib.request.urlopen(req))
    except ValueError:
        return False

When it gets to this, json responds with:

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

I read in a few places that for json.load you should pass objects (In this case an HTTPResponse object) with a .read() attached, but it doesn't work on HTTPResponse objects.

I'm at a loss as to where to go with this next, but being that my entire 1500 line script is freshly converted to Python 3, I don't feel like going back to 2.7.

Answer

costas picture costas · Jul 1, 2014

Facing the same problem I solve it using decode()

...
rawreply = connection.getresponse().read()
reply = json.loads(rawreply.decode())

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