if s == '': s = s else: while s[:1] == ' ': s = s[1:] while s[-1:] == ' ': s = s[:-1] return s
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我我我Metanoia
if s == '': s = s else: while s[:1] == ' ': s = s[1:] while s[-1:] == ' ': s = s[:-1] return s