Use platform-independent path separator constant

With slide_loc of: M:/Histo/LucarelliPAS\91647.svs
slideID before: LucarelliPAS\91647
slideID  after: 91647

Author: dzenanz

multic/segmentationschool/Codes/wsi_loader_utils.py

@@ -89,7 +89,7 @@ def __init__(self,args, wsi_directory=None, transform=None):
 
         usable_slides=[]
         for slide_loc in all_slides:
-            slideID,slideExt=os.path.splitext(slide_loc.split('/')[-1])
+            slideID,slideExt=os.path.splitext(slide_loc.split(os.sep)[-1])
             print("working slide... "+ slideID,end='\r')
 
             slide=openslide.OpenSlide(slide_loc)