Update app.py

app.py

@@ -3,8 +3,8 @@ def hide_message(reg,sec):
     out = reg + " " + ''.join(chr(0xE0000 + ord(ch)) for ch in sec)
     for ea in range(len(out)):
         print(ea)
-        if ea.startswith("\U000e"):
-            new_ea = ea.split("\U000e")[1]
+        if ea.startswith(r"\U000e"):
+            new_ea = ea.split(r"\U000e")[1]
             print(new_ea)
     print (len(out))
     print (out)