Python列表中的字典

Question

现在我知道已有一些关于这个主题的报道,但我无法理解.我会告诉你我的代码,我希望这能帮助你了解我的目标.

字典

father = {"Yin": ["yang","yaha"]}

这段代码工作正常.

elif choice == "5":
    son = input("Enter the name of a son to get the name of his grandfather: ")
    if son in father:
        description = father[son]
        print("\n", son, "'s grandfather is", description[1])
    else:
        print("\nSorry, I don't know who that is", son)

这段代码没有,我只是希望它能够更改列表中的第二项(yaha).

elif choice == "6":
    son = input("which grandfather and son pair need updating: ")
    if son in father:
        description = input("What's name of the grandfather?: ")
        son[father] = description[1]
        print("\n", son, "has been redefined.")
    else:
        print("\nThat person doesn't exist!  Try adding it.")

任何帮助,将不胜感激.

Answer 1

我想你的意思是

father[son][1] = description

在第二个片段中.

说明:

• father是一个字典,son是一个字符串,所以son[father]会提出一个AttributeError.
• description也是一个字符串,所以description[1]是一个字符.father[son]另一方面,是一个列表,您可以将其元素分配给新字符串.