Update app.py

app.py

@@ -64,7 +64,7 @@ def preprocess_text(text):
     replace_by = " " 
     replacement_map = {
         ord(c): replace_by
-        for c in '#{|}' + string.digits
+        for c in ':#{|}' + string.digits
     }
     text = text.translate(replacement_map)