查找粗体/下划线字符串的正确正则表达式（Python）

Question

所以我想在字符串中找到两组标准。例如：

import re
bold_pattern = re.compile() #pattern for finding all words in between ** **
underline_pattern = re.compile() # pattern for finding all words in between __ __
a = "__Hello__ **This** __is__ **Lego**"

我将如何在正则表达式上做到这一点？

Answer 1

使用捕获模式捕获两个模式之间的单词：

bold_pattern = re.compile(r'\*\*(.*?)\*\*')   # pattern for finding all words in between ** **
underline_pattern = re.compile(r'__(.*?)__')  # pattern for finding all words in between __ __

然后将它们用于re.findall：

bolds = re.findall(bold_pattern, a)
# or: bold_pattern.findall(a)
underlines = re.findall(underline_pattern, a)
# or: underline_pattern.findall(a)