在使用Python编写的应用的过程中,有时候会遇到多个文件之间传递同一个全局变量的情况。本文就此给出了如下的解决方法供大家参考。
文件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
文件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())
文件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())
文件4:main.py
#!/usr/bin/env python2.7 import set import get set.set() get.get()
其中globalvar.py中定义了两个全局变量,在set.py中的set函数中对其进行赋值,在get.py文件中的get函数取值并打印。main.py函数作为应用入口,调用set和get。
这样就可以看到一个完整的应用中,全局变量的跨文件使用。

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