use qtpy in workfiles tool

openpype/tools/workfiles/files_widget.py

@@ -3,8 +3,8 @@ import logging
 import shutil
 import copy
 
-import Qt
-from Qt import QtWidgets, QtCore
+import qtpy
+from qtpy import QtWidgets, QtCore
 
 from openpype.host import IWorkfileHost
 from openpype.client import get_asset_by_id
@@ -618,7 +618,7 @@ class FilesWidget(QtWidgets.QWidget):
             "caption": "Work Files",
             "filter": ext_filter
         }
-        if Qt.__binding__ in ("PySide", "PySide2"):
+        if qtpy.API in ("pyside", "pyside2"):
             kwargs["dir"] = self._workfiles_root
         else:
             kwargs["directory"] = self._workfiles_root

openpype/tools/workfiles/lock_dialog.py

@@ -1,4 +1,4 @@
-from Qt import QtWidgets, QtCore, QtGui
+from qtpy import QtWidgets, QtCore, QtGui
 from openpype.style import load_stylesheet, get_app_icon_path
 
 from openpype.pipeline.workfile.lock_workfile import get_workfile_lock_data

openpype/tools/workfiles/model.py

@@ -1,7 +1,7 @@
 import os
 import logging
 
-from Qt import QtCore, QtGui
+from qtpy import QtCore, QtGui
 import qtawesome
 
 from openpype.client import (

openpype/tools/workfiles/save_as_dialog.py

@@ -3,7 +3,7 @@ import re
 import copy
 import logging
 
-from Qt import QtWidgets, QtCore
+from qtpy import QtWidgets, QtCore
 
 from openpype.pipeline import (
     registered_host,

openpype/tools/workfiles/window.py

@@ -1,7 +1,7 @@
 import os
 import datetime
 import copy
-from Qt import QtCore, QtWidgets, QtGui
+from qtpy import QtCore, QtWidgets, QtGui
 
 from openpype.client import (
     get_asset_by_name,