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循环 if 切片

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ClearIight

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

ClearIight

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

def trim(s):

while s[:1] == ' ' or s[-1:] == ' ':
if s[:1] == ' ':
        s = s[1:]
elif s[-1:] == ' ':
        s = s[:-1]
return s

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