def get_left_name(self):

        name = None
        if LEFT is not None:
            left = LEFT.get("clip")
            name = None
            if left is not None:
                name = left.file_name()
            else:
                win_id = LEFT.get("win_id")
                view_id = LEFT.get("view_id")
                window = None
                view = None
                for w in sublime.windows():
                    if w.id() == win_id:
                        window = w
                if window is not None:
                    for v in window.views():
                        if v.id() == view_id:
                            view = v
                if view is not None:
                    name = view.file_name()
                    if name is None:
                        name = "Untitled"
                    else:
                        name = basename(name)
        return name
Get left name.
dataset/ETHPy150Open facelessuser/EasyDiff/easy_diff_basic.py/EasyDiffPanelCommand.get_left_name