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Python中replace方法实例分析

Jun 06, 2016 am 11:32 AM
python replace method

本文以实例形式讲述了Python中replace方法,很有实用价值,具体如下:

replace方法主要有两种:

last_date = "1/2/3" 目标为"123"

方法一:repalce

date =last_date.replace('/','')

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方法二:re

p = re.compile("/")
date = p.sub('', last_date)

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需要注意的是:一定不要转义,否则函数不会生效。

replace 方法返回根据正则表达式进行文字替换后的字符串的复制,格式如下:

stringObj.replace(rgExp, replaceText)

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参数:

stringObj 必选项。要执行该替换的 String 对象或字符串文字。该字符串不会被 replace 方法修改。
rgExp 必选项。为包含正则表达式模式或可用标志的正则表达式对象。也可以是 String 对象或文字。如果 rgExp 不是正则表达式对象, 它将被转换为字符串,并进行精确的查找;不要尝试将字符串转化为正则表达式。
replaceText 必选项。是一个String 对象或字符串文字,对于stringObj 中每个匹配 rgExp 中的位置都用该对象所包含的文字加以替换。在 Jscript 5.5 或更新版本中,replaceText 参数也可以是返回替换文本的函数。

例如:

content.replace('\n',' ').replace('\r',' ').replace('\\','\\\\').replace(',','\\,')
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希望本文所述实例对大家的Python程序设计能起到一定的参考作用。

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