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用一用昨天学的递归

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宋忠义_

#1 Created at ... [Delete] [Delete and Lock User] 
    if s[: 1] == ' ':
        s = s[1:]
        return trim(s)
    if s[-1:] == ' ':
        s = s[: -1]
        return trim(s)
    return s

大运村城管

#2 Created at ... [Delete] [Delete and Lock User]

好评

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