save project

3.py

+group = {'a':'933','b':'932','c':'931'}
+if'933'in group:
+    print(group['933'])
+          
\ No newline at end of file

4.py

+dict = {'可口可乐':3,'旺仔牛奶':4,'农夫三泉':2,'辣条':5,'巴西烤肉':2,'果冻':4,'乐事':5,'奥利奥':10,'巧克力':6}
+k = input('你想买什么啊')
+if k in dict:
+    print('叮咚~您的'+k+'需要支付'+str(dict[k])+'元~')
+else:
+    print('神奇百货暂未有您想要的商品，敬请期待')    
\ No newline at end of file