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月奏tsukikanade

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

回9楼，因为廖大给的这几个例子后面都有两个空格，所以-2也刚好能过

烟尘沐雨丶

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

继续19日的问题进行思考，s=[:-2]为什么也可以跑出测试成功，发现老师的测试尾部空格都为2个，所以s=[-2]能跑过测试，然后全为空格的例子在第一个while中已经去除空格。想通问题的感觉真好，，ps：还是感谢月奏tsukikanade的帮助。

隔壁老刘liu

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

写的很好！

用户6334935811

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

请问下这里的while为什么不能用if呢

盗贼zxcv

#16 Created at ... [Delete] [Delete and Lock User] 
def trim(s):    for i in range((len(s)-1)):        if s[i] != " ":            return s[i:]print(trim("             xiaoming     "))
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