def reraise(self):
        r"""Reraises the wrapped exception in the current thread"""
        # Format a message such as: "Caught ValueError in DataLoader worker
        # process 2. Original Traceback:", followed by the traceback.
        msg = "Caught {} {}.\nOriginal {}".format(
            self.exc_type.__name__, self.where, self.exc_msg
        )
        if self.exc_type == KeyError:
            # KeyError calls repr() on its argument (usually a dict key). This
            # makes stack traces unreadable. It will not be changed in Python
            # (https://bugs.python.org/issue2651), so we work around it.
            msg = KeyErrorMessage(msg)
        elif getattr(self.exc_type, "message", None):
            # Some exceptions have first argument as non-str but explicitly
            # have message field
            raise self.exc_type(message=msg)
        try:
            exception = self.exc_type(msg)
        except TypeError:
            # If the exception takes multiple arguments, don't try to
            # instantiate since we don't know how to
            raise RuntimeError(msg) from None
        raise exception
Reraises the wrapped exception in the current thread
python/dgl/utils/exception.py