save project

123.py

+a = {'可口可乐':3,'旺仔牛逼奶':4,'农夫山泉':1,'辣条':999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999}
+a.clear()
+print(a)
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456.py

+score = {'语文':91,'数学':88,'英语':85}
+for k,v in score.items():
+    print(k,v)
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diy.py

-# 持家小能手 (利用自动更新成绩程序的逻辑完成这个新项目)
-# 如果输入的水果价钱比字典中的低，则替换掉，反之则不更新
-cost= {'苹果':5.2,'山竹':12.9,'香蕉':2.4,'荔枝':15,'葡萄':9.3,'桂圆':8,'蓝莓':10,'李子':8}
-k=input('请输入水果名称：')
-v=input('请输入水果价钱：')
-# ?补充条件判断:
-    if # ?:
-        # ?更新价钱
-        print(k+'降价了，现价'+v+'元')
-    else:
-        print(k+'涨价了，我们不买')
-else:
-    cost[k] = float(v)
-    print(k+'的价钱'+v+'元已上传~')
+a = {'北京':8,'上海':15,'广州':20,'深圳':21}
+b = a.pop('北京')
+print(b)
+print(a)  
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