Method from_failure

returns/io.py:797–815

One more value to create failure unit values. It is useful as a united way to create a new value from any container. .. code:: python >>> from returns.io import IOResult, IOFailure >>> assert IOResult.from_failure(1) == IOFailure(1) You can us

(
        cls,
        inner_value: _NewErrorType,
    )

    @classmethod
    def from_failure(
        cls,
        inner_value: _NewErrorType,
    ) -> 'IOResult[Any, _NewErrorType]':
        """
        One more value to create failure unit values.

        It is useful as a united way to create a new value from any container.

        .. code:: python

          >>> from returns.io import IOResult, IOFailure
          >>> assert IOResult.from_failure(1) == IOFailure(1)

        You can use this method or :func:`~IOFailure`,
        choose the most convenient for you.

        """
        return IOFailure(inner_value)


@final