python - 在 Python 中使用数组递归查找字典中的元素

Question

我有一个数组:

["a", "1", "2"]

还有一个有点复杂的字典:

{
  "a":{
    "1": {
      "1": "Some text",
      "2": "This is the text I want",
      "3": "Even more"
    },
    "2": {
      "1": "Some text",
      "2": "More text"
    }
  },
  "b": {
    "1": "Here is some text",
    "2": {
      1: "Some text"
    },
    "3": {}
  }
}

我如何使用我的数组来获取“This is the text I want”？我是递归的新手，所以我真的不知道如何正确解决这个问题

Answer 1

这应该更容易一些:

keys = ["a", "1", "2"]
dictionary = {
  "a":{
    "1": {
      "1": "Some text",
      "2": "This is the text I want",
      "3": "Even more"
    },
    "2": {
      "1": "Some text",
      "2": "More text"
    }
  },
  "b": {
    "1": "Here is some text",
    "2": {
      1: "Some text"
    },
    "3": {}
  }
}

for key in keys: # drop to lower level of dictionary with each loop
    try:
        dictionary = dictionary[key]
    except KeyError:
        dictionary = 'ERROR'
        break
    
print(dictionary) # after the loop ends, 'dictionary' will hold the required value