intelligible errors on schema creation.

Il traceback indica graphene/types/schema.py, graphene/types/typemap.py e graphql/type/definition.py; inizia tracciando la creazione dello schema fino alla convalida dei campi di Query. Fai in modo che gli errori identifichino la classe Query/ObjectType non valida e verifica che l’eccezione risultante ne includa il nome.

When creating a schema, if there is a problem with one of your QueryObjects, the resulting error message and traceback does not give any indication as to which ObjectType class is broken.

ex)

Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/home/user/sonicsd/src/api/graphql.py", line 30, in schema
  File "/usr/local/lib/python3.7/dist-packages/graphene/types/schema.py", line 78, in __init__
    self.build_typemap()
  File "/usr/local/lib/python3.7/dist-packages/graphene/types/schema.py", line 168, in build_typemap
    initial_types, auto_camelcase=self.auto_camelcase, schema=self
  File "/usr/local/lib/python3.7/dist-packages/graphene/types/typemap.py", line 80, in __init__
    super(TypeMap, self).__init__(types)
  File "/usr/local/lib/python3.7/dist-packages/graphql/type/typemap.py", line 31, in __init__
    self.update(reduce(self.reducer, types, OrderedDict()))  # type: ignore
  File "/usr/local/lib/python3.7/dist-packages/graphene/types/typemap.py", line 88, in reducer
    return self.graphene_reducer(map, type)
  File "/usr/local/lib/python3.7/dist-packages/graphene/types/typemap.py", line 117, in graphene_reducer
    return GraphQLTypeMap.reducer(map, internal_type)
  File "/usr/local/lib/python3.7/dist-packages/graphql/type/typemap.py", line 109, in reducer
    field_map = type_.fields
  File "/usr/local/lib/python3.7/dist-packages/graphql/pyutils/cached_property.py", line 22, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/usr/local/lib/python3.7/dist-packages/graphql/type/definition.py", line 198, in fields
    return define_field_map(self, self._fields)
  File "/usr/local/lib/python3.7/dist-packages/graphql/type/definition.py", line 217, in define_field_map
    ).format(type_)
AssertionError: Query fields must be a mapping (dict / OrderedDict) with field names as keys or a function which returns such a mapping.

In the error there should at least be the name of the Query class whose fields are invalid.
In this case I believe the error turned out to be that the root Query had no fields because I was improperly dynamically generating them.