How to use the pdbpp.Pdb.get_terminal_size function in pdbpp

sys.stdout = stdout = MyBytesIO()
        sys.stderr = stderr = MyBytesIO()
        func()
    except InnerTestException:
        pass
    except bdb.BdbQuit:
        print("!! Received unexpected bdb.BdbQuit !!")
    except Exception:
        # Make it available for pytests output capturing.
        print(stdout.get_unicode_value(), file=oldstdout)
        raise
    finally:
        sys.stdin = oldstdin
        sys.stdout = oldstdout
        sys.stderr = oldstderr
        pdbpp.Pdb.get_terminal_size = old_get_terminal_size

    stderr = stderr.get_unicode_value()
    if stderr:
        # Make it available for pytests output capturing.
        print(stdout.get_unicode_value())
        raise AssertionError("Unexpected output on stderr: %s" % stderr)

    return stdout.get_unicode_value().splitlines()

self.encoding = encoding

        def write(self, msg):
            if isinstance(msg, text_type):
                msg = msg.encode(self.encoding)
            super(MyBytesIO, self).write(msg)

        def get_unicode_value(self):
            return self.getvalue().decode(self.encoding).replace(
                pdbpp.CLEARSCREEN, "\n"
            ).replace(chr(27), "^[")

    # Use a predictable terminal size.
    if terminal_size is None:
        terminal_size = (80, 24)
    pdbpp.Pdb.get_terminal_size = staticmethod(lambda: terminal_size)
    try:
        sys.stdin = FakeStdin(input)
        sys.stdout = stdout = MyBytesIO()
        sys.stderr = stderr = MyBytesIO()
        func()
    except InnerTestException:
        pass
    except bdb.BdbQuit:
        print("!! Received unexpected bdb.BdbQuit !!")
    except Exception:
        # Make it available for pytests output capturing.
        print(stdout.get_unicode_value(), file=oldstdout)
        raise
    finally:
        sys.stdin = oldstdin
        sys.stdout = oldstdout