class_docstr: A validator was asked to validate an instance against an unknown type.
class_docstr_tok: ["A","validator","was","asked","to","validate","an","instance","against","an","unknown","type","."]
code: def __init__(self, type, instance, schema):
      self.type = type
      self.instance = instance
      self.schema = schema
  
imports: from collections import defaultdict, deque
  import itertools
  import pprint
  import textwrap
  import attr
  from jsonschema import _utils
  from jsonschema.compat import PY3, iteritems
label_desc: Use image node_id 1 to create a new UnknownType object from inherited base classes: Exception with example: obj = UnknownType(type, instance, schema)