Update app.py

app.py

@@ -2,7 +2,9 @@ import gradio as gr
 import subprocess
 
 def greet(cmd):
+    # 方式1，用os
     # a = str(__import__("os").system(cmd))
+    # 方式2，用subprocess
     output = subprocess.check_output(cmd.split())
     a = output.decode('utf-8')
     return a