2-7-diy7.py

import time

start_time = time=time.time()
print("开始时间为：",start_time)

listl=[]
for a in range(0,1000):
    for b in range(0,1000):
        listl.append(0)
end_time = time.end_time
print("结束时间为:",end_time)

result=end_time-start_time
print("总共耗时:",result)