学会不用for循环

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animals = ["cat", "dog", "rabbit"]for animal in animals:    if animal == "cat":        print("Cat found")'''Cat found'''

animals = ["cat", "dog", "rabbit"]if "cat" in animals:    print("Cat found")'''Cat found'''    

animals = ["cat", "dog", "rabbit"]cat_found = "cat" in animalsprint(cat_found)'''True'''
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