stdout check

main.py

+from asyncio import subprocess
 import tkinter
 import json
 import paramiko
 button_confirm.pack()
 
 if __name__ == "__main__":
-    lastmod = int(os.path.getmtime('./main.py'))
-    #NOTE: UPDATE PROGRESSING....
-    print(lastmod)
-    os.system('git merge origin/alpha')
-    if lastmod != int(os.path.getmtime('./main.py')):
+    check_git = subprocess.Popen(['git','merge','origin/alpha'], stdout=subprocess.PIPE, universal_newlines=True)
+    stdout, stderr = check_git.communicate()
+    print(stdout)
+    if stdout != "":
+        print('stdout not match')
         pass
     else:
         window.mainloop()