如何用Python Selenium从href链接提取指定版本信息？

针对你用Python Selenium抓取链接后，需要从exe链接中提取版本标识的需求，这里提供两种实用方法：

方法1：字符串分割法 #

利用链接固定的结构（/software/版本标识.exe），通过分割字符串直接提取版本：

# 假设你已获取到前缀信息和对应链接，存储在data列表中
data = [
    ("S: July 2022", "https://bdn-ak-ssl.site.com/software/s96_8_80.exe"),
    ("B: July 2022", "https://bdn-ak-ssl.site.com/software/b43_6_56.exe"),
    ("BB: July 2022", "https://bdn-ak-ssl.site.com/software/bb202_2_100.exe")
]

for prefix, url in data:
    # 分割链接取最后一段文件名，再移除.exe后缀
    version = url.split('/')[-1].replace('.exe', '')
    print(f"{prefix} {url} Version: {version}")

方法2：正则表达式法 #

如果链接结构可能有变化，用正则匹配更灵活，精准捕获/software/和.exe之间的内容：

import re

data = [
    ("S: July 2022", "https://bdn-ak-ssl.site.com/software/s96_8_80.exe"),
    ("B: July 2022", "https://bdn-ak-ssl.site.com/software/b43_6_56.exe"),
    ("BB: July 2022", "https://bdn-ak-ssl.site.com/software/bb202_2_100.exe")
]

# 匹配/software/后到.exe前的所有字符
pattern = r'/software/([^.]+)\.exe'
for prefix, url in data:
    match_result = re.search(pattern, url)
    if match_result:
        version = match_result.group(1)
        print(f"{prefix} {url} Version: {version}")

运行任意一种方法，都能得到你期望的输出：

S: July 2022 https://bdn-ak-ssl.site.com/software/s96_8_80.exe Version: s96_8_80
B: July 2022 https://bdn-ak-ssl.site.com/software/b43_6_56.exe Version: b43_6_56
BB: July 2022 https://bdn-ak-ssl.site.com/software/bb202_2_100.exe Version: bb202_2_100

内容的提问来源于stack exchange，提问作者bigmike