python正则表达式 域名
包含http:\
或https:\
表达式:
(?:(?:http:\/\/)|(?:https:\/\/))?(?:[\w](?:[\w\-]{0,61}[\w])?\.)+[a-zA-Z]{2,6}(?:\/)
例:
pattern = re.compile(r"(?:(?:http:\/\/)|(?:https:\/\/))?(?:[\w](?:[\w\-]{0,61}[\w])?\.)+[a-zA-Z]{2,6}(?:\/)")
strs = 'Python官网的网址是https://www.python.org/'
result = pattern.findall(strs)
print(result)
['https://www.python.org/']