import datetime
import time
 
 
starttime = datetime.datetime.now()
endtime = datetime.datetime.now()
print('The time cost: ')
print(endtime - starttime)

 
start = time.time()
end = time.time()
print("Execution Time: ", end - start)

print(starttime)
print(start)


输出：
The time cost: 
0:00:00
Execution Time:  0.0
2019-12-19 21:16:28.611853
1576761388.6128507