save project

1.py

+while True:
+    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}
+    b = input("水果名")
+    a = input("水果多少一克(单位：美元)")
+    if b in cost:
+        if float(a) < cost[b]:
+                print("买它")
+        else:
+               print("卖了")
+    else:
+            cost[b] = float(a)
+            print(cost[b])
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