save project

diy1.py

+import time
+start_time=time.time()
+print("开始时间为"+str(start_time))
 list1 = []
 list1 = []
-for a in range(0, 1000):
-    for b in range(0, 1000):
-        list1.insert(0, 0)
+list2=[]
+for a in range(0, 100):
+    for b in range(0, 100):
\ No newline at end of file
+        
+        list1.insert(0,0)
+for c in range(0,100):
+    list1.extend(list2)
+finish_time=time.time()
+print("结束时间为"+str(finish_time))
+time=finish_time-start_time
+print("总时间"+str(time))
\ No newline at end of file