如何在字符串中的重复单词前添加分隔符？

Question

我有一个原始文本，如下所示：

images = "background-image:url('some-url'); background-repeat: no-repeat; background-image:url('some-url'); background-repeat: no-repeat; background-image:url('some-url'); background-repeat: no-repeat; background-image:url('some-url'); background-repeat: no-repeat;"

我想要分隔上面的字符串，以便在背景图像之前插入一个逗号。一个像这样的结果。

images = "background-image:url('some-url'); background-repeat: no-repeat; , background-image:url('some-url'); background-repeat: no-repeat; , background-image:url('some-url'); background-repeat: no-repeat; , background-image:url('some-url'); background-repeat: no-repeat;" 

我如何使用python来实现这一点？

Answer 1

像这样使用replace ()：

first_string = "images = background-image:url('some-url'); background-repeat: no-repeat; background-image:url('some-url'); background-repeat: no-repeat; background-image:url('some-url'); background-repeat: no-repeat; background-image:url('some-url'); background-repeat: no-repeat;"
second_string = first_string.replace ('; background-image', '; , background-image')
print (second_string)