def trim(s): while True: if s[:1] ==' ': s=s[-len(s)+1:] else: break while True: if s[-1:] ==' ': s=s[:len(s)-1] else: break return s
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用户6822917370
-- coding:utf-8 --
def trim(s): while True: if s[:1] ==' ': s=s[-len(s)+1:] else: break while True: if s[-1:] ==' ': s=s[:len(s)-1] else: break return s