test
test
configure evn in office
Why can not push
Merge branch 'master' of https://github.com/foxli180/pythonprac.git
Merge branch 'master' of https://github.com/foxli180/pythonprac.git
2 ways of object exchange method
1. Pipe
	paren_conn,child_conn = Pipe()
	send()
	recv()
2. Queue
	q = Queue
	q.put
	q.get