def stu(nam):
nam+=nam
print("函数内:nam=",nam)
nam=["糖鲲","wuxiang","陶鸡蛋"]
print("函数调用前:nam=",nam)
stu(nam)
print("函数调用后:nam=",nam)
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函数调用前:nam= ['糖鲲', 'wuxiang', '陶鸡蛋']
函数内:nam= ['糖鲲', 'wuxiang', '陶鸡蛋', '糖鲲', 'wuxiang', '陶鸡蛋']
函数调用后:nam= ['糖鲲', 'wuxiang', '陶鸡蛋', '糖鲲', 'wuxiang', '陶鸡蛋']