save project

l.py

+cost={'苹果':5.2,'山竹':12.9,'香蕉':2.4,'l':15,'p':9.3,'g':8,'l':10,'l':8}
+k=input("名称")
+v=input("价格")
+if k in cost:
+    if float(v)<cost[k]:
+        cost[k]=float(v)
+        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")
\ No newline at end of file