shell

server.py

@@ -40,6 +40,7 @@ def hello():
     result = subprocess.run(
         [f"gatttool -i hci0 -b b2:3b:03:00:14:d6 --char-write-req -a 0x0009 -n {str}"],
         stdout=subprocess.PIPE,
+        shell=True,
     ).stdout.decode("utf-8")
     if result != "Characteristic value was written successfully":
         raise Exception("Didn't work")