code: def not_(validator, not_schema, instance, schema):
      if validator.is_valid(instance, not_schema):
          yield ValidationError(
              "%r is not allowed for %r" % (not_schema, instance)
          )
  
imports: import re
  from jsonschema._utils import ensure_list, equal, extras_msg, find_additional_properties, types_msg, unbool, uniq
  from jsonschema.exceptions import FormatError, ValidationError
  from jsonschema.compat import iteritems
label_desc: Use image node_id 31 for calling a global function with example usage: not_(validator, not_schema, instance, schema) without return types