寻找正则表达式以匹配以下内容

Question

string = '***All Done***, ***Execution Success 5664 for $**$ files***'

re pattern = ([\w+].*[\$\*\*]\$.*[\w+]|[\w+])

output i'm getting: 'All Done***, ***Execution Success for $**$ files'

预期输出：All Done Execution Success 5664 for $**$ files

应仅获取字母数字字符和$\*\*$。其余所有应清除。任何帮助，将不胜感激。如果在字符串上找不到$\*\*$，则它应返回：All Done Execution Success 5664 for files。

Answer 1

这似乎适用于您提供的示例（Python 3.6）：

import re

strings = [
    '***All Done***, ***Execution Success 5664 for $**$ files***',
    'Error not ** found. Restore $**$ again **'
]

pattern = "\w+|\$\*\*\$"
cpattern = re.compile(pattern)

for string in strings:
    print(" ".join(cpattern.findall(string)))

输出：

 All Done Execution Success 5664 for $**$ files
 Error not found Restore $**$ again