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字符串去空

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彩虹

#1 Created at ... [Delete] [Delete and Lock User] 
def trim(s):    for i in s:        if s[:1] ==' ':            s = s[1:]        if s[-1] ==' ':            s = s[0:-1]    return s

RY

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

感觉这个很棒啊

冉

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

trim（‘          ’）这样全是空格的会报错

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