python3：如果包含特定字符串，如何搜索和检索组成字典的所有列表

Question

我有一本包含以下键和值的字典：

Pasta : [['Tomato', 'hot'], ['Vegetables', 'Lemon', 'cold'],
        ['Cheese','hot']]
Cookies : [['Chocolate', 'Nuts', 'hot'], ['Chocolate', 'Pistachio', 'hot']]
Salad : [['Mushrooms', 'Lettuce', 'cold'], ['Lettuce', 'Fruits', 'cold']]

假设对于每个键，我希望保留包含字符串“hot”的所有值，以获得：

Pasta : [['Tomato', 'hot'], ['Cheese','hot']]
Cookies : [['Chocolate', 'Nuts', 'hot'], ['Chocolate', 'Pistachio', 'hot']]
Salad : []

Answer 1

dictionary = { k : [ x for x in v if "hot" in x ] for k, v in dictionary.items() }