如何檢查線上域名的過期時間叫潦，sslyze這個包不錯模暗，可以試試
from sslyze import *
from sslyze.server_connectivity import *
from sslyze.plugins.certificate_info_plugin import *
from sslyze.synchronous_scanner import *
server_info = ServerConnectivityInfo(hostname=u'www.baidu.com')
server_info.test_connectivity_to_server(network_timeout=1)
synchronous_scanner = SynchronousScanner()
command = CertificateInfoScanCommand()
scan_result = synchronous_scanner.run_scan_command(server_info, command)
cert=scan_result.certificate_chain[0]
print(cert.not_valid_after)
