auto save

diy1.py

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