zoom = ['zoom0','zoom1','zoom2','zoom3','zoom4'];
zoom0 = LabelFrame(mtk, text="AAA", width=250, height=200)
zoom1 = LabelFrame(mtk, text="BBB", width=250, height=200)
zoom2 = LabelFrame(mtk, text="CCC", width=250, height=200)
zoom3 = LabelFrame(mtk, text="DDD", width=250, height=200)
for i in range(4):
exec("'%s'.pack()"%(zoom[i]))
但是编译的时候报错：
exec("%s.pack()" % (zoom[i]))
File "<string>", line 1, in <module>
AttributeError: 'NoneType' object has no attribute 'pack'
如果我把(zoom[i])改成(zoom[2])之类的就没有问题，只要是用了i这个参数就会报错。百思不得其解，希望大家能给我解答一下。
