auto save

diy1.py

-list1 = []
+import time
+list= []
 for a in range(0, 1000):
-    for b in range(0, 1000):
-        list1.insert(0, 0)
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+        for b in range(0, 1000):
+            --=insert(0, 0)
+b=time.time()
+
+c=b-a
+
+print("总共耗时："，c)
\ No newline at end of file