python的json取值
时间: 2023-10-18 17:26:42 浏览: 197
要在Python中获取JSON数据的值,可以使用以下方法:
方法1: 使用json模块的loads()函数将JSON字符串转换为Python字典,然后使用字典访问方法获取值。例如:
```python
import json
json_data = '{"key": "value"}'
data = json.loads(json_data)
value = data['key']
print(value) # 输出"value"
```
方法2: 如果JSON数据是一个嵌套的字典,可以使用多个访问键来获取值。例如:
```python
import json
json_data = '{"key1": {"key2": "value"}}'
data = json.loads(json_data)
value = data['key1']['key2']
print(value) # 输出"value"
```
这两种方法都可以根据键的层次结构来获取JSON数据的值。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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