Python中从右到左的字符串替换?

问题描述

我想在 Python 中进行字符串替换，但只执行从右到左的第一个实例.在理想的世界中，我会:

myStr = "密西西比"打印 myStr.rreplace("iss","XXX",1)>小姐XXXippi

鉴于 rreplace 不存在，这样做的最佳方法是什么?

解决方案

rsplit 和 join 可用于模拟 rreplace 的效果>

>>>'XXX'.join('密西西比'.rsplit('iss', 1))'小姐XXXippi'

I want to do a string replace in Python, but only do the first instance going from right to left. In an ideal world I'd have:

myStr = "mississippi"
print myStr.rreplace("iss","XXX",1)

> missXXXippi

What's the best way of doing this, given that rreplace doesn't exist?

解决方案

rsplit and join could be used to simulate the effects of an rreplace

>>> 'XXX'.join('mississippi'.rsplit('iss', 1))
'missXXXippi'

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