[b]目的[/b] 　　获得一个首尾不含多余空格的字符串 [b]方法 [/b] 可以使用字符串的以下方法处理： [b]string.lstrip(s[, chars])[/b] Return a copy of the string with leading characters removed. If chars is omitted or None, whitespace characters are removed. If given and not None, chars must be a string; the characters in the string will be stripped from the beginning of the string this method is called on. [b]string.rstrip(s[, chars])[/b] Return a copy of the string with trailing characters removed. If chars is omitted or None, whitespace characters are removed. If given and not None, chars must be a string; the characters in the string will be stripped from the end of the string this method is called on. [b]string.strip(s[, chars])[/b] Return a copy of the string with leading and trailing characters removed. If chars is omitted or None, whitespace characters are removed. If given and not None, chars must be a string; the characters in the string will be stripped from the both ends of the string this method is called on.   具体的效果如下： 其中提供的参数chars用来删除特定的符号，注意空格并没有被移除，例如：