save project

diy1.py

+import time
 list1 = []
+start_time = time.time()
 for a in range(0, 1000):
     for b in range(0, 1000):
-        list1.insert(0, 0)
\ No newline at end of file
+        list1.append(0) 
+end_time = time.time()
+result = end_time - start_time
+print("总时间:",result)
\ No newline at end of file