(随手记)python 获取https-证书过期时间

from urllib3.contrib import pyopenssl
def get_expire(https_url):
    try:
        conn = pyopenssl.ssl.create_connection((https_url, 443))
        sock = pyopenssl.ssl.SSLContext(pyopenssl.ssl.PROTOCOL_SSLv23).wrap_socket(conn, server_hostname=https_url)
        cert = pyopenssl.ssl.DER_cert_to_PEM_cert(sock.getpeercert(True))
        data = pyopenssl.OpenSSL.crypto.load_certificate(pyopenssl.OpenSSL.crypto.FILETYPE_PEM, cert)
        print(data.get_notAfter().decode()[0:-1])
        expire_time = datetime.datetime.strptime(data.get_notAfter().decode()[0:-1], '%Y%m%d%H%M%S')
        expire_days = (expire_time - datetime.datetime.now()).days
        return True, {"expire_time": str(expire_time), "expire_days": expire_days}
    except Exception as e:
        print(e)
        return False, {}

使用方法：
is_suc, ssl_expire_dict = get_expire(“www.baidu.com”)
返回结果：
print(is_suc) # True
print(ssl_expire_dict) # {“expire_time”: “2022-08-02 01:16:03”, “expire_days”: 292}