diff --git a/source/component/menubar.py b/source/component/menubar.py
index 19acedd..c990700 100755
--- a/source/component/menubar.py
+++ b/source/component/menubar.py
@@ -22,9 +22,7 @@ def getSunValueImage(sun_value):
     return image
 
 def getCardPool(data):
-    card_pool = {}
-    for cardName in data:
-        card_pool[c.PLANT_CARD_INFO[c.PLANT_CARD_INDEX[cardName]]] = data[cardName]
+    card_pool = {c.PLANT_CARD_INFO[c.PLANT_CARD_INDEX[card_name]]: data[card_name] for card_name in data}
     return card_pool
 
 class Card():
diff --git a/source/constants.py b/source/constants.py
index 7579e88..df09fea 100755
--- a/source/constants.py
+++ b/source/constants.py
@@ -376,9 +376,7 @@ PLANT_CARD_INFO = (# 元组 (植物名称, 卡片名称, 阳光, 冷却时间)
             )
 
 # 卡片中的植物名称与索引序号的对应关系，指定名称以得到索引值
-PLANT_CARD_INDEX={}
-for i, item in enumerate(PLANT_CARD_INFO):
-    PLANT_CARD_INDEX[item[PLANT_NAME_INDEX]] = i
+PLANT_CARD_INDEX={item[PLANT_NAME_INDEX]: index for (index, item) in enumerate(PLANT_CARD_INFO)}
 
 # 指定了哪些卡可选（排除坚果保龄球特殊植物）
 CARDS_TO_CHOOSE = range(len(PLANT_CARD_INFO) - 3)