Update app.py

app.py

@@ -62,7 +62,7 @@ def main():
    # else:
     #    result = "False2"
     #load_model("stylegan2-ffhq-config-f","feng2022/Time-TravelRephotography_stylegan2-ffhq-config-f")
-    result = os.system('nvidia-smi')
+    result = subprocess.check_output('nvidia-smi')
     iface = gr.Interface(
       fn=predict, 
       inputs='text',