def trim(s): if s != '': while(s[:1]) == ' ': s = s[1:] while(s[-1:]) == ' ': s= s[:-1] return s
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达仔hongda
def trim(s): if s != '': while(s[:1]) == ' ': s = s[1:] while(s[-1:]) == ' ': s= s[:-1] return s