save project

diy1.py

 import time
 import time
 start_time=time.time()
 start_time=time.time()
 print("开始时间为:",start_time)
 print("开始时间为:",start_time)
-
 list1 = []
 list1 = []
 for a in range(0, 1000):
 for a in range(0, 1000):
     for b in range(0, 1000):
     for b in range(0, 1000):