snapshot before regression test

Test/SysLibTest/temp/59e00d50660b941e.pyi

@@ -0,0 +1,19 @@
+"""
+Auto-generated Python stub file from os_backend.py
+Module: os_backend
+"""
+
+
+import t, c
+from stdint import *
+import platmacro
+import os._win32
+import os._posix
+
+def os_exists(path: str) -> bool: pass
+
+def os_remove(path: str) -> int: pass
+
+def os_isdir(path: str) -> bool: pass
+
+def os_getsize(path: str) -> t.CInt64T: pass