while s[:1] == ' ':
s = s[1:]
if s == ' ':
break
while s[-1:] == ' ':
s = s[:-1]
return s
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神隐筑梦师
while s[:1] == ' ':
s = s[1:]
if s == ' ':
break
while s[-1:] == ' ':
s = s[:-1]
if s == ' ':
break
return s