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In [1]:

    
xa = [1, 2, 3]
xa.append([4, 5])
print (xa)









    



[1, 2, 3, [4, 5]]



In [2]:

    
xe = [1, 2, 3]
xe.extend({4, 5})
print (xe)









    



[1, 2, 3, 4, 5]



In [3]:

    
import time
timestamp = [
    "2010-04-20 10:07:30",
    "2010-04-20 10:07:38",
    "2010-04-20 10:07:52",
    "2010-04-20 10:08:22",
    "2010-04-20 10:08:22",
    "2010-04-20 10:09:46",
    "2010-04-20 10:10:37",
    "2010-04-20 10:10:58",
    "2010-04-20 10:11:50",
    "2010-04-20 10:12:13",
    "2010-04-20 10:12:13",
    "2010-04-20 10:25:38"
]



In [4]:

    
timestamp.sort(key=lambda x: time.strptime(x, '%Y-%m-%d %H:%M:%S')[0:6],
    reverse=True)



In [5]:

    
print (timestamp)









    



['2010-04-20 10:25:38', '2010-04-20 10:12:13', '2010-04-20 10:12:13', '2010-04-20 10:11:50', '2010-04-20 10:10:58', '2010-04-20 10:10:37', '2010-04-20 10:09:46', '2010-04-20 10:08:22', '2010-04-20 10:08:22', '2010-04-20 10:07:52', '2010-04-20 10:07:38', '2010-04-20 10:07:30']



In [ ]: