auto save

diy1.py

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