import time
from datetime import datetime

def generate_dts():
        _dts = []
        for no_items in xrange(5):
                record = (datetime.now(), '123', '456','789')
                _dts.append(record)
                time.sleep(0.5)
        return _dts

if __name__ == '__main__':
        dts = generate_dts()
        dt_max = max(dts)
        dt_min = min(dts)

        #Uncomment to broke example
        #record = (datetime.now(), '123', '456','789')
        #dts.append(record)

        print(dt_max == dts[-1])
        print(dt_min == dts[0])