假设我有一个关键字列表和一个标记为部分的输入字符串，我希望我的代码在部分中找到这些关键字并将它们放在 [] 方括号内。然而，我的关键词有时会相互重叠。

keywords = ["alpha", "alpha beta", "alpha beta charlie", "alpha beta charlie delta"]

为了解决这个问题，我按长度对它们进行排序，以便优先考虑较长的关键字。但是，当我运行代码时，有时我会得到双括号或嵌套括号（我认为这是因为它仍然将它们检测为有效关键字）

我试过这个：

import re

keywords = ["alpha", "alpha beta", "alpha beta charlie", "alpha beta charlie delta"]

keywords.sort(key=len, reverse=True)

section = "alpha alpha beta alpha beta charlie alpha beta charlie delta"
section = section.replace("'", "’").replace("\"", "”")
section_lines = section.split('\n')
for i, line in enumerate(section_lines):
    if not line.startswith('#'):
        section_lines[i] = re.sub(r'-',' ',line)
        for x in range(4):
            section_lines[i] = re.sub(r'\b' + f"{keywords[x]}" + r'\b', f"[{keywords[x]}]", section_lines[i], flags=re.IGNORECASE)
            section_lines[i] = section_lines[i].replace("[[", "[").replace("]]", "]")

section = '\n'.join(section_lines)
section = section.replace("   "," ").replace("  "," ")

print(section)

不要介意线路分割，它是为了处理多条线路的另一部分。

我想要：[alpha] [alpha beta] [alpha beta charlie] [alpha beta charlie delta]

但我得到的是： [alpha] [alpha] beta] [alpha] beta] charlie] [alpha] beta] charlie] delta]