class_docstr: Retries until an exception is raised of one or more types.
class_docstr_tok: ["Retries","until","an","exception","is","raised","of","one","or","more","types","."]
code: def __call__(self, retry_state):
      # always retry if no exception was raised
      if not retry_state.outcome.failed:
          return True
      return self.predicate(retry_state.outcome.exception())
  
imports: import abc
  import re
  import six
label_desc: Use image node_id 2 for calling the retry_unless_exception_type obj's underlying member method code with example usage: obj.__call__(retry_state) and returns: self, True