save project

diy.py

@@ -19,5 +19,6 @@ bros_sum=bro1 + bro2 + bro3 + ['颜良'] + bros
 bros_sum.extend(['吕布','赵云'])
 bros_sum.extend(['吕布','赵云'])
 print("part of bros_sum is:", bros_sum[-3:])
 print("part of bros_sum is:", bros_sum[-3:])
 print(bros_sum[13][1])
 print(bros_sum[13][1])
+print(bros_sum[13][-2])
 #[end]added by teacher
 #[end]added by teacher
 print("bros_sum is:", bros_sum)
 print("bros_sum is:", bros_sum)
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