diff --git a/diy1.py b/diy1.py
index 7c1b662..ce831b6 100644
--- a/diy1.py
+++ b/diy1.py
@@ -6,7 +6,7 @@ scores = {'语文':89, '数学':95, '英语':80}
 def get_average(scores):
     score = 0  
     for subject, score in scores.items():
-        score += 1
+        score += score
         print('现在的总分是%d'%score)
     ave_score = score/len(scores)
     print('平均分是%d'%ave_score)
diff --git a/fhgf.py b/fhgf.py
new file mode 100644
index 0000000..60ced31
--- /dev/null
+++ b/fhgf.py
@@ -0,0 +1,11 @@
+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)
\ No newline at end of file