save project

diy1.py

 import time
-a = time.time()
-print("开始时间：",a)
+
+e = time.time()
+print("开始时间：",e)
 list1 = []
 for a in range(0, 1000):
     for b in range(0, 1000):
-        list1.insert(0, 0)
-b = time.time()
-print("结束时间：",b)
-print("总共用时：",b-a)
+        list1.append(0)
+d = time.time()
+c = d-e
+print("结束时间：",d)
+
+print("总共用时：",c)