Fix Test Error

tools/check.import.sh

@@ -29,6 +29,7 @@ __check(){
             -e "filebuffer.py:import threading" \
             -e "texedit.py:from math import log10, floor" \
             -e "string.py:import unicodedata" \
+            -e "string.py:from types import GeneratorType" \
             -e "progressbar.py:import math" \
             -e "uiloader.py:import json" \
             -e "uiproperties.py:from .properties.* import" \