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贴一下我的代码，没想到和前排的一样

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MingkaiNVM

#1 Created at ... [Delete] [Delete and Lock User] 
def trim(s):
    if [x for x in s if x is not ' '] is not True:
        raise TypeError
    while s[0] is ' ':
        s = s[1:]
    while s[-1] is ' ':
        s = s[:-1]
    return s

MingkaiNVM

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

第二行错了，改为 if bool([x for x in s if x is not ' ']) is not True:

用户6313651038

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

def trim(s): n=0 m=len(s) for i in range(len(s)): if s[i]!=' ': n=i break for l in range(len(s)): if s[-l-1]!=' ': m=len(s)-l break return s[n:m]

大家能不能帮我看下为啥这个不行？老是通不过。

老哥稳002

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

第二行没看懂，是判断字符串里面有没有空格吗？ is not True 为什么不直接写is Flase呢

老哥稳002

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

三楼的代码，你的i和l最大值只能到len(s)-1,而且你用for循环是遍历整个字符串，记下最后一个空格的位置，如果你想分别记下前后两端的最后一个空格的位置的话，可以用while循环。还有你前面已经把m=len(s)了，后面为啥不直接用m呢。

灬低调总没错灬

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

“if bool([x for x in s if x is not ' ']) is not True:”这段代码我没有看懂啊，尤其是[x for x in s if x is not ' ']这一块，我是真没懂，求大神讲解

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