python - 如何使用标志仅返回一组使用 findall- Python

Question

我正致力于将代码用于艺术(如果可能的话？)并且我正在尝试使用 findall 检索正则表达式的第三组。我阅读了关于 findall 的官方文档，发现它返回一个元组有点缺乏，我想传递一个标志来返回第三组，而不是 3 组的元组(前两个是占位符) .将某些内容链接起来以仅返回名称(第三组)而不是之后进行迭代的最有效方法是什么？

import re, requests

rgx = r"([<][TDtd][>])|(target[=]new[>])(?P<the_deceased>[A-Z].*?)[,]"

urls = {2013: "http://www.killedbypolice.net/kbp2013.html",
        2014: "http://www.killedbypolice.net/kbp2014.html",
        2015: "http://www.killedbypolice.net/" }

names_of_the_dead = []

for url in urls.values():
    response = requests.get(url)
    content = response.content
    people_killed_by_police_that_year_alone = re.findall(rgx, content)
    for dead_person in people_killed_by_police_that_year_alone:
        names_of_the_dead.append(dead_person)

#dead_americans_as_string = ",".join(names_of_the_dead)
#print("RIP, {} since 2013:\n".format(len(names_of_the_dead)))
#print(dead_americans_as_string)

In [67]: names_of_the_dead
Out[67]: 
[('', 'target=new>', 'May 1st - Dec 31st'),
 ('', 'target=new>', 'Ricky Junior Toney'),
 ('', 'target=new>', 'William Jackson'),
 ('', 'target=new>', 'Bethany Lytle'),
 ('', 'target=new>', 'Christopher George'),

Answer 1

只需将第一个和第二个捕获组转为非捕获组即可。

rgx = r"(?:[<][TDtd][>])|(?:target[=]new[>])(?P<the_deceased>[A-Z].*?)[,]"