def trim(s): while True: if s == '': break elif s[0] == ' ': s = s[1:] elif s[-1] == ' ': s = s[:-1] else: break return s
Sign in to make a reply
不说谎dee匹诺曹
def trim(s): while True: if s == '': break elif s[0] == ' ': s = s[1:] elif s[-1] == ' ': s = s[:-1] else: break return s