Add main function

plchat.py

@@ -1442,7 +1442,7 @@ def updateAnimationPref():
     else:
         STATIC_PREF = 'static_'
 
-if __name__ == '__main__':
+def main():
     _mkdir(CACHE+'/img/')
     _mkdir(CACHE+'/vid/')
     _mkdir(CACHE+'/audio/')
@@ -1452,3 +1452,6 @@ if __name__ == '__main__':
     app.setApplicationName("plchat")
     ex = App(app.processEvents)
     sys.exit(ex._eventloop.run_forever())
+
+if __name__ == '__main__':
+    main()