Not JSON serializable

[apdavison]

With this file: https://web.gin.g-node.org/NeuralEnsemble/ephy_testing_data/raw/master/plexon/File_plexon_1.plx

we get the error

Traceback (most recent call last):
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/site-packages/django/core/handlers/exception.py", line 41, in inner
    response = get_response(request)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/site-packages/django/core/handlers/base.py", line 187, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/site-packages/django/core/handlers/base.py", line 185, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view
    return view_func(*args, **kwargs)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/site-packages/django/views/generic/base.py", line 68, in view
    return self.dispatch(request, *args, **kwargs)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/site-packages/rest_framework/views.py", line 495, in dispatch
    response = self.handle_exception(exc)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/site-packages/rest_framework/views.py", line 455, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/site-packages/rest_framework/views.py", line 492, in dispatch
    response = handler(request, *args, **kwargs)
  File "/Users/andrew/dev/analysis/neural-activity-visualizer/neural_activity_app/app/views.py", line 72, in get
    return JsonResponse(block_data)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/site-packages/django/http/response.py", line 530, in __init__
    data = json.dumps(data, cls=encoder, **json_dumps_params)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/json/__init__.py", line 251, in dumps
    sort_keys=sort_keys, **kw).encode(obj)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/json/encoder.py", line 207, in encode
    chunks = self.iterencode(o, _one_shot=True)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/json/encoder.py", line 270, in iterencode
    return _iterencode(o, 0)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/site-packages/django/core/serializers/json.py", line 124, in default
    return super(DjangoJSONEncoder, self).default(o)
  File "/Users/andrew/anaconda/envs/visualizer/lib/python2.7/json/encoder.py", line 184, in default
    raise TypeError(repr(o) + " is not JSON serializable")
TypeError: 101 is not JSON serializable

[apdavison]

also with
https://web.gin.g-node.org/NeuralEnsemble/ephy_testing_data/raw/master/spike2/File_spike2_3.smr