code: def _exception_raise(self):
          
          exc = self.exc_info()[:]
          try:
              exc_type, exc_value, exc_traceback = exc
          except ValueError:
              exc_type, exc_value = exc
              exc_traceback = None
  
          # raise exc_type(exc_value).with_traceback(exc_traceback)
          if sys.version_info[0] == 2:
              exec("raise exc_type, exc_value, exc_traceback")
          else: #  sys.version_info[0] == 3:
              if isinstance(exc_value, Exception): #hasattr(exc_value, 'with_traceback'):
                  # If exc_value is an exception, then just reraise
                  exec("raise exc_value.with_traceback(exc_traceback)")
              else:
                  # else we'll create an exception using the value and raise that
                  exec("raise exc_type(exc_value).with_traceback(exc_traceback)")
docs: Raises a pending exception that was recorded while getting a
          Task ready for execution.