相关疑难解决方法(0)

我刚开始自学Python,我需要一些关于这个脚本的帮助:

old_string = "didnt work"   
new_string = "worked"

def function():
    exec("old_string = new_string")     
    print(old_string) 

function()

我想得到它old_string = "worked".