save project

tiy.py

-c = {'a':2,'b':7,'c':4}
-k = input("你要买什么")
-n = input("要几个")
-if k in c:    
-    print("总共"+k+"要"+str(c[k]*int(n))+"元~")
-else:    
-    print("缺货了")
\ No newline at end of file
+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}
+j = input("请输入水果名称：")
+b = input("请输入水果价钱：")
+if j in cost:
+    if cost[x] < float(b):
+        cost[x] = float(b)
+        print(j+'降价了,现价'+b+'元')
+