012_py之证书过期监测及域名使用的py列表的并集差集交集

一、由于线上域名证书快要过期,需要进行监测,顾写了一个方法用于线上证书过期监测,如下:

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

import ssl,socket,pprint   def check_domain_sslexpired(domain):     context = ssl.create_default_context()     context.verify_mode = ssl.CERT_REQUIRED     context.check_hostname = True     context.load_verify_locations("/private/tmp/creditupdate/jyall.crt")     conn = context.wrap_socket(socket.socket(socket.AF_INET), server_hostname=domain)     conn.connect((domain, 443))     cert = conn.getpeercert()     return '{0}\t{1}\t{2}'.format(domain, cert['issuer'][2][0][1], cert['notAfter'])   def main():     print check_domain_sslexpired("www.jyall.com") if __name__ == '__main__':     main()

输出=>

?

1	www.jyall.com   GlobalSign Organization Validation CA - SHA256 - G2 Apr 11 05:16:03 2019 GMT

二、由于域名数量特别地多,所以需要使用集合进行对已经更新的和未更新的域名进行统计

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

#!/usr/bin/env python #coding:utf-8   def diff(listA,listB):     #求交集的两种方式     retA = [i for i in listA if i in listB]     retB = list(set(listA).intersection(set(listB)))       print "retA is: ",retA     print "retB is: ",retB       #求并集     retC = list(set(listA).union(set(listB)))     print "retC1 is: ",retC       #求差集，在B中但不在A中     retD = list(set(listB).difference(set(listA)))     print "retD is: ",retD       retE = [i for i in listB if i not in listA]     print "retE is: ",retE   def main():     listA = [1,2,3,4,5]     listA1 = [3,4,5]     listB = [3,4,5,6,7]     diff(listA,listB)   if __name__ == '__main__':     main()

输出:

?

1 2 3 4 5

retA is:  [3, 4, 5] retB is:  [3, 4, 5] retC1 is:  [1, 2, 3, 4, 5, 6, 7] retD is:  [6, 7] retE is:  [6, 7]