TypeError: __init__() missing 1 required positional argument: 'descriptor_pool'

[lftalkington]

TypeError: __init__() missing 1 required positional argument: 'descriptor_pool'

[rok-povsic]

@lftalkington Hi, a Protobuf version 3.7.0 was released just today which is the reason for this error. We're looking into how to fix this. At this moment, you can manually install the previous version with pip install protobuf==3.6.1.

[chrisbolman]

thanks @rok-povsic, one of our engineers just ran into this too. appreciate the suggestion.

[k-dal]

@chrisbolman I just encountered the same issue. Downgrading to protobuf==3.6.1 didn't do it for me due to another library's dependency, but I was able to get ClarifaiApp() working again by overriding the __init__() method in _CustomParser to match the older version of protobuf.

class _CustomParser(_Parser):

  def __init__(self, ignore_unknown_fields):
    """
    Overriding the super class init. More details here:
    https://github.com/Clarifai/clarifai-python/issues/101
    """
    self.ignore_unknown_fields = ignore_unknown_fields

  def _ConvertFieldValuePair(self, js, message):
    """
    Because of fields with custom extensions such as cl_default_float, we need
    to adjust the original's method's JSON object parameter by setting them explicitly to the
    default value.
    """

    message_descriptor = message.DESCRIPTOR
    for f in message_descriptor.fields:
      default_float = f.GetOptions().Extensions[extensions_pb2.cl_default_float]
      if default_float:
        if f.name not in js:
          js[f.name] = default_float

    super(_CustomParser, self)._ConvertFieldValuePair(js, message)

_CustomParser is here: clarifai/rest/grpc/custom_converters/custom_dict_to_message.py

Hope this helps others.

[rok-povsic]

@lftalkington @chrisbolman @kevindalias We've just released the version which has the Protobuf 3.7.0 support. Please upgrade to the latest Clarifai version with: pip install clarifai --upgrade. Workaround are no longer needed.

Thanks a lot for reporting this. Please let us know if you encounter any more issues.