TypeError：List indices must be integers or slices , not str

报错代码

A friend in a fan group,An error is reported for complex dictionary values,He wants to implement printingpeach：

import json
python_str={
    
   "season":
      [
      {
    "spring":[{
    "fruit":"pineapple"}]},
      {
    "summer":[{
    "fruit":["watermelon","peach"]}]},
      {
    "fall":[{
    "fruit": "apple"}]},
        {
    "winter":[{
    "fruit": "orange"}]}
      ]
}
#Locate data nodes
#print dictionary allkey
print(python_str.keys())
#print dictionary allvalue
print(python_str.values())
print(python_str["season"]["spring"])

报错信息截图：

报错翻译

报错信息翻译：

类型错误：List indices must be integers or slices,而不是str

报错原因

Observing the code code, you can find that the highlighted red box indicates that the value cannot be obtained

报错原因：The code is wrong and cannot get the value

解决方法

For complex dictionaries, it is necessary to fetch down layer by layer,修改代码为：

import json
python_str={
    
   "season":
      [
      {
    "spring":[{
    "fruit":"pineapple"}]},
      {
    "summer":[{
    "fruit":["watermelon","peach"]}]},
      {
    "fall":[{
    "fruit": "apple"}]},
        {
    "winter":[{
    "fruit": "orange"}]}
      ]
}

print(python_str["season"][1]['summer'][0]['fruit'][1])