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去掉收尾空格

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雨夜桦

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

def trim(s):

    if not s:

        return s

    if s[0] == '' or s[0] == ' ':

        s = trim(s[1:])

    elif s[-1] == '' or  s[-1]==' ':

        s = trim(s[:-1])

    return s


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