python如何replace(替换)多个字符？

python中使用replace替换多个字符的方法：

1、使用replace方法替换多个相连的字符

#!/usr/bin/python
 
str = "this is string example....wow!!! this is really string";
print str.replace("is", "was");
print str.replace("is", "was", 3);

输出结果如下：

thwas was string example....wow!!! thwas was really string

thwas was string example....wow!!! thwas is really string

2、在replace()函数中使用正则替换多个字符

//定义一个数组
let str = [[1],[2],[3],[4]];
//先转换成JSON字符串
let str2 = JSON.stringify(str);
//在对该字符串进行字符替换,在这里我们将所有中括号都替换成空
console.log(str2.replace(/\[|]/g,''));
//这样就完成了多个字符的替换

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