Tkinter无法将标签附加到列表中?

mad*_*mer 2 python label tkinter configure

labels = []
global labels
#blablbalabla code
welcome = Tkinter.Label(root,text= "Welcome to Fobby").place(x=250,y=250)
labels.append(welcome)
print labels
>>> [None]
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怎么了?标签是否与列表不兼容?

HYR*_*YRY 5

这是因为place()返回None:

labels = []
welcome = Tkinter.Label(root,text= "Welcome to Fobby")
welcome.place(x=250,y=250)
labels.append(welcome)
print labels
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