save project

diy1.py

 import time
 
-
-
+t1=time.time()
+print('开始时间为:t1')
 list1 = []
-for a in range(0, 1000):
-    for b in range(0, 1000):
+for a in range(0, 10):
+    for b in range(0, 10):
+        c=1000-a-b
         list1.insert(0, 0)
+t2=time.time()
+print('结束时间为:t2')
+t3=t2-t1
+print('时间差为:t3')
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