auto save

1.py

+student1 = {'语文': 91, '数学': 88, '英语': 85}
+student2 = {'语文': 97, '数学': 98, '英语': 90}
+student3 = {'语文': 95, '数学': 100, '英语': 93}
+score = {'悟空': student1, '诺依': student2, '小贝': student3}
+for i in score.keys():
+    print(i)
+    for x,y in score[i].items(): 
+        print(x,y)   
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2.py

+a=34.453
+a=str(a)
+print(type(a))
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