maximum recursion depth exceeded

Dear all, while extending our schema with a new Node I ran into following exception:

ERROR 2018-02-07 13:28:50,103 exception 29952 123145344159744 Internal Server Error: /graphql
Traceback (most recent call last):
  File "/site-packages/django/core/handlers/exception.py", line 35, in inner
    response = get_response(request)
  File "/site-packages/django/core/handlers/base.py", line 128, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/site-packages/django/core/handlers/base.py", line 126, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/site-packages/django/views/generic/base.py", line 63, in view
    self = cls(**initkwargs)
  File "/src/graphene-django/graphene_django/views.py", line 70, in __init__
    schema = graphene_settings.SCHEMA
  File "/src/graphene-django/graphene_django/settings.py", line 116, in __getattr__
    val = perform_import(val, attr)
  File "/src/graphene-django/graphene_django/settings.py", line 60, in perform_import
    return import_from_string(val, setting_name)
  File "/src/graphene-django/graphene_django/settings.py", line 74, in import_from_string
    module = importlib.import_module(module_path)
  File "/usr/local/Cellar/python3/3.6.0/Frameworks/Python.framework/Versions/3.6/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 978, in _gcd_import
  File "<frozen importlib._bootstrap>", line 961, in _find_and_load
  File "<frozen importlib._bootstrap>", line 950, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 655, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 205, in _call_with_frames_removed
  File "/Users/dbernardini/Documents/Development/Django/dse_mis/medis/medis/schema.py", line 24, in <module>
    schema = graphene.Schema(query=Query, mutation=Mutation)
  File "/site-packages/graphene/types/schema.py", line 44, in __init__
    self.build_typemap()
  File "/site-packages/graphene/types/schema.py", line 105, in build_typemap
    self._type_map = TypeMap(initial_types, auto_camelcase=self.auto_camelcase, schema=self)
  File "/site-packages/graphene/types/typemap.py", line 66, in __init__
    super(TypeMap, self).__init__(types)
  File "/site-packages/graphql/type/typemap.py", line 16, in __init__
    self.update(reduce(self.reducer, types, OrderedDict()))
  File "/site-packages/graphene/types/typemap.py", line 74, in reducer
    return self.graphene_reducer(map, type)
  File "/site-packages/graphene/types/typemap.py", line 104, in graphene_reducer
    return GraphQLTypeMap.reducer(map, internal_type)
  File "/site-packages/graphql/type/typemap.py", line 79, in reducer
    field_map = type.fields
...
...
  File "/site-packages/graphql/type/typemap.py", line 79, in reducer
    field_map = type.fields
  File "/site-packages/graphql/pyutils/cached_property.py", line 16, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/site-packages/graphql/type/definition.py", line 180, in fields
    return define_field_map(self, self._fields)
  File "/site-packages/graphql/type/definition.py", line 189, in define_field_map
    field_map = field_map()
  File "/site-packages/graphene/types/typemap.py", line 247, in construct_fields_for_type
    map = self.reducer(map, field.type)
  File "/site-packages/graphene/types/typemap.py", line 74, in reducer
    return self.graphene_reducer(map, type)
  File "/site-packages/graphene/types/typemap.py", line 104, in graphene_reducer
    return GraphQLTypeMap.reducer(map, internal_type)
  File "/site-packages/graphql/type/typemap.py", line 79, in reducer
    field_map = type.fields
  File "/site-packages/graphql/pyutils/cached_property.py", line 16, in __get__
    value = obj.__dict__[self.func.__name__] = self.func(obj)
  File "/site-packages/graphql/type/definition.py", line 180, in fields
    return define_field_map(self, self._fields)
  File "/site-packages/graphql/type/definition.py", line 189, in define_field_map
    field_map = field_map()
  File "/site-packages/graphene/types/typemap.py", line 244, in construct_fields_for_type
    field = get_field_as(field.get_type(self.schema), _as=Field)
  File "/site-packages/graphene/types/dynamic.py", line 21, in get_type
    return self.type()
  File “/src/graphene-django/graphene_django/converter.py", line 188, in dynamic_type
    return Field(_type, description=field.help_text, required=not field.null)
  File "/site-packages/graphene/types/field.py", line 39, in __init__
    type = NonNull(type)
  File "/site-packages/graphene/types/structures.py", line 70, in __init__
    super(NonNull, self).__init__(*args, **kwargs)
  File "/site-packages/graphene/types/structures.py", line 12, in __init__
    super(Structure, self).__init__(*args, **kwargs)
RecursionError: maximum recursion depth exceeded while calling a Python object

Looks to me that there is a recursive call spanning the whole Schema which at some point exceeds the max recursions. I could not find this issue elsewhere and I am trying to understand if it is a problem of our schema or a limit of the current implementation.

For now I extended the max recursions with:

sys.setrecursionlimit(10000)

[genomics-geek]

I see this behavior as well - but I think it has to do with changing the schema while the django server (manage.py runserver) is running. When it occurs, I just kill the django server and refresh the page and it works just fine.

I only see this during development and not in our production environments - so I am assuming it has to do with the updates while running the django server - but not 100% sure - I could not trace it down. Seems to happen randomly as well.

[mostafaghadimi]

I have done as you said but I still have the same problem. I have described my configuration in details in this link. Would you please take a look?

Thanks Dani!