def attr_keys(self):
keys = [key for (key, _) in self._instance.items]
obj = node_classes.List(parent=self._instance)
obj.postinit(elts=keys)
obj = objects.DictKeys(obj)
return self._generic_dict_attribute(obj, "keys")
def attr___subclasses__(self):
"""Get the subclasses of the underlying class
This looks only in the current module for retrieving the subclasses,
thus it might miss a couple of them.
"""
if not self._instance.newstyle:
raise AttributeInferenceError(
target=self._instance, attribute="__subclasses__"
)
qname = self._instance.qname()
root = self._instance.root()
classes = [
cls
for cls in root.nodes_of_class(nodes.ClassDef)
if cls != self._instance and cls.is_subtype_of(qname, context=self.context)
]
obj = node_classes.List(parent=self._instance)
obj.postinit(classes)
class SubclassesBoundMethod(bases.BoundMethod):
def infer_call_result(self, caller, context=None):
yield obj
implicit_metaclass = self._instance.implicit_metaclass()
subclasses_method = implicit_metaclass.locals["__subclasses__"][0]
return SubclassesBoundMethod(proxy=subclasses_method, bound=implicit_metaclass)
def attr_values(self):
values = [value for (_, value) in self._instance.items]
obj = node_classes.List(parent=self._instance)
obj.postinit(values)
obj = objects.DictValues(obj)
return self._generic_dict_attribute(obj, "values")
def attr_items(self):
elems = []
obj = node_classes.List(parent=self._instance)
for key, value in self._instance.items:
elem = node_classes.Tuple(parent=obj)
elem.postinit((key, value))
elems.append(elem)
obj.postinit(elts=elems)
obj = objects.DictItems(obj)
return self._generic_dict_attribute(obj, "items")
def attr___path__(self):
if not self._instance.package:
raise AttributeInferenceError(target=self._instance,
attribute="__path__")
path_objs = [
node_classes.Const(
value=path
if not path.endswith("__init__.py") else os.path.dirname(path),
parent=self._instance,
) for path in self._instance.path
]
container = node_classes.List(parent=self._instance)
container.postinit(path_objs)
return container
