How to implement cross-file global variables in python

This article mainly introduces how to implement cross-file global variables in python. For more information about how to use Python to compile applications, sometimes the same global variable is transferred between multiple files. This article provides the following solutions for your reference.

File 1: globalvar. py

#!/usr/bin/env python2.7 class GlobalVar:   db_handle = None   mq_client = None def set_db_handle(db):   GlobalVar.db_handle = db def get_db_handle():   return GlobalVar.db_handle def set_mq_client(mq_cli):   GlobalVar.mq_client = mq_cli def get_mq_client():   return GlobalVar.mq_client 

File 2: set. py

import globalvar as GlobalVar def set():   GlobalVar.set_mq_client(10)   print "------set mq_client in set.py------mq_client: " + str(GlobalVar.get_mq_client()) 

File 3: get. py

#!/usr/bin/env python2.7 import globalvar as GlobalVar def get():   print "------get mq_client in get.py------mq_client: " + str(GlobalVar.get_mq_client()) 

File 4: main. py

#!/usr/bin/env python2.7 import set import get set.set() get.get() 

Globalvar. py defines two global variables and assigns values to the set function in set. py. The get function value in the get. py file is printed. The main. py function acts as the application entry and calls set and get.

In this way, you can see the cross-file use of global variables in a complete application.