Update app.py

app.py

@@ -13,19 +13,23 @@ from realesrgan.archs.srvgg_arch import SRVGGNetCompact
 
 last_file = None
 img_mode = "RGBA"
+firstrun = True
 
 def realesrgan(img, model_name, face_enhance):
-    global last_file
-    
+
+    # remove last upscale when doing this new upscale to prevent memory being full
+    # added firstrun variable since I was running into global declaration problems?
+    if not firstrun:
+        global last_file
+        
+        if last_file:
+            print(f"Deleting {last_file} ...")
+            os.remove(last_file)
+            last_file = None
+            
     if not img:
         return
 
-    # remove last upscale when doing this new upscale to prevent memory being full
-    if last_file:
-        print(f"Deleting {last_file} ...")
-        os.remove(last_file)
-        last_file = None
-    
     imgwidth, imgheight = img.size
 
     if imgwidth > 1000 or imgheight > 1000:
@@ -112,6 +116,9 @@ def realesrgan(img, model_name, face_enhance):
         cv2.imwrite(out_filename, output)
         global last_file
         last_file = out_filename
+        if firstrun:
+            global firstrun
+            firstrun = False
         return out_filename