Python实现从url中提取域名的几种方法

方法一：（python3适用）

from urllib.parse import urlparse

def url_to_domain(url):
	o = urlparse(url)
	domain = o.hostname
	return domain

urls = [
    "http://meiwen.me/src/index.html",
    "http://1000chi.com/game/index.html",
    "http://see.xidian.edu.cn/cpp/html/1429.html",
    "https://docs.python.org/2/howto/regex.html",
    """https://www.google.com.hk/search?client=aff-cs-360chromium&hs=TSj&q=url%E8%A7%A3%E6%9E%90%E5%9F%9F%E5%90%8Dre&oq=url%E8%A7%A3%E6%9E%90%E5%9F%9F%E5%90%8Dre&gs_l=serp.3...74418.86867.0.87673.28.25.2.0.0.0.541.2454.2-6j0j1j1.8.0....0...1c.1j4.53.serp..26.2.547.IuHTj4uoyHg""",
    "file:///D:/code/echarts-2.0.3/doc/example/tooltip.html",
    "http://api.mongodb.org/python/current/faq.html#is-pymongo-thread-safe",
    "https://pypi.python.org/pypi/publicsuffix/",
    "http://127.0.0.1:8000"
]

for url in urls:
	print(url_to_domain(url))

# print(url_to_domain("http://www.baidu.com:80/index.php?id=1&uid=2"))
# --> www.baidu.com

这里也提到了几种方法，使用python3的话需要更改代码：
https://www.jb51.net/article/55693.htm