如何替换字符串中同时出现的2个或更多特殊字符或下划线

Question

我有以下字符串：

'___5weeks_rollingAverage_8hours'
'___5weeks__rolling=*%Average_8hours'
'___5weeks_rollingAverage_8hours__'
'___5weeks_rollingAverage_8hours'

如果_在字符串中的任何位置出现多次，我希望删除它。因此，上述内容应转化为：

5weeks_rollingAverage_8hours

tvm

Answer 1

使用正则表达式

import re

test_str = ("___5weeks_rollingAverage_8hours", "___5weeks__rolling=*%Average_8hours",
            "___5weeks_rollingAverage_8hours__", "___5weeks_rollingAverage_8hours")

regex = re.compile(r"[!\"#$%&'()*+,-.\/:;<=>?@\[\\\]^_`{|}~]{2,}")
for item in test_str:
    item = regex.sub('', item)
    print(item)

输出

5weeks_rollingAverage_8hours
5weeksrollingAverage_8hours
5weeks_rollingAverage_8hours
5weeks_rollingAverage_8hours