auto save

diy.py

+# 创建字典
 # 'a':1  'b':2  'c':4
-dict_char = {}
-
+dict_char = {'a':1,'b':2,'c':4}
+# 提取'c'的值
+print(dict_char['c'])
+# 修改'c'的值为3
+dict_char['c'] = 3
+print(dict_char)