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  • Python美味食谱: 1.5 去除字符串两段空格

    目的

      获得一个首尾不含多余空格的字符串

    方法

    可以使用字符串的以下方法处理:

    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.

    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.

    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, 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:

    In [10]: x='     Hi,Jack!        '

    In [
    11]: print '|',x.lstrip(),'|',x.rstrip(),'|',x.strip(),'|'
    | Hi,Jack!         |      Hi,Jack! | Hi,Jack! |

     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:

    In [12]: x='yxyxyxxxyy Hello xyxyxyy'

    In [
    13]: print x.strip('xy')
     Hello
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  • 原文地址:https://www.cnblogs.com/yuxc/p/2132102.html
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