>>> def trim(s):
... while s!='' and s[0]==' ':
... s=s[1:]
... while s!='' and s[-1]==' ':
... s=s[:-1]
... return s
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穆临想修改昵称了
>>> def trim(s):
... while s!='' and s[0]==' ':
... s=s[1:]
... while s!='' and s[-1]==' ':
... s=s[:-1]
... return s