Method __init__

src/click/testing.py:150–153

(self)

    stderr: BytesIOCopy

    def __init__(self) -> None:
        self.output = io.BytesIO()
        self.stdout = BytesIOCopy(copy_to=self.output)
        self.stderr = BytesIOCopy(copy_to=self.output)


class _NamedTextIOWrapper(io.TextIOWrapper):