auto save

diy1.py

@@ -4,11 +4,11 @@
 scores = {'语文':89, '数学':95, '英语':80}
 
 def get_average(scores):
-    score = 0  
+    sum_score=0 
     for subject, score in scores.items():
-        score += score
-        print('现在的总分是%d'%score)
-    ave_score = score/len(scores)
+        sum_score += score
+        print('现在的总分是%d'%sum_score)
+    ave_score = sum_score/len(scores)
     print('平均分是%d'%ave_score)
 
 get_average(scores)
\ No newline at end of file

平均分.py

+scores = {'语文':89, '数学':95, '英语':80}
+scores = {'语文':89, '数学':95, '英语':80}
+
+def get_average(scores):
+    sum_score = 0  # sum_score 作为函数内部的局部变量，从而可以为函数所用
+    for subject, score in scores.items():
+        sum_score += score
+        print('现在的总分是%d'%sum_score)
+    ave_score = sum_score/len(scores)
+    print('平均分是%d'%ave_score)
+
+get_average(scores)
+