| string.lstrip(s[, chars]) 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. Changed in version 2.2.3: The chars parameter was added. The chars parameter cannot be passed in earlier 2.2 versions. string.rstrip(s[, chars]) 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. Changed in version 2.2.3: The chars parameter was added. The chars parameter cannot be passed in earlier 2.2 versions. string.strip(s[, chars]) 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, charsmust be a string; the characters in the string will be stripped from the both ends of the string this method is called on. Changed in version 2.2.3: The chars parameter was added. The chars parameter cannot be passed in earlier 2.2 versions. |
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demoStr.lstrip() = 去除left左边的白空格 = "hello wold ! " demoStr.rstrip() = 去除right右边的白空格 = " hello wold !" demoStr.strip() = demoStr.lstrip().rstrip()=去除left左边和right右边=去除首尾的白空格="hello wold !" |