save project

diy1.py

+import time
+
+start_time = time.time()
+print('开始时间为：',start_time)
+
 list1 = []
 for a in range(0, 1000):
     for b in range(0, 1000):
         list1.insert(0, 0)
+end_time = time.time()
+print('结束时间:',end_time)
+
+result = end_time - start_time
+print('总共耗时：',result)
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