def set_root_path(self, path, hide_extra_columns=True):
        if not self.isVisible():
            self._path_to_set = path
            self._hide_extra_colums = hide_extra_columns
            return
        if sys.platform == 'win32' and os.path.splitunc(path)[0]:
            mdl = QtGui.QStandardItemModel(1, 1)
            item = QtGui.QStandardItem(
                QtGui.QIcon.fromTheme(
                    'dialog-warning',
                    QtGui.QIcon(':/pyqode-icons/rc/dialog-warning.png')),
                'UNC pathnames not supported.')
            mdl.setItem(0, 0, item)
            self.setModel(mdl)
            self.root_path = None
            return
        self._hide_extra_colums = hide_extra_columns

        if os.path.isfile(path):
            path = os.path.abspath(os.path.join(path, os.pardir))
        self._fs_model_source = QtWidgets.QFileSystemModel()
        self._fs_model_source.setFilter(QtCore.QDir.Dirs | QtCore.QDir.Files |
                                        QtCore.QDir.NoDotAndDotDot |
                                        QtCore.QDir.Hidden)
        self._fs_model_source.setIconProvider(self._icon_provider)
        self._fs_model_proxy = self.FilterProxyModel()
        for item in self._ignored_patterns:
            self._fs_model_proxy.ignored_patterns.append(item)
        self._fs_model_proxy.setSourceModel(self._fs_model_source)
        self._fs_model_proxy.set_root_path(path)
        # takes parent of the root path, filter will keep only `path`, that
        # way `path` appear as the top level node of the tree
        self._root_path = os.path.dirname(path)
        self.root_path = path
        self._fs_model_source.directoryLoaded.connect(self._on_path_loaded)
        self._fs_model_source.setRootPath(self._root_path)
Sets the root path to watch
dataset/ETHPy150Open OpenCobolIDE/OpenCobolIDE/open_cobol_ide/extlibs/pyqode/core/widgets/filesystem_treeview.py/FileSystemTreeView.set_root_path