Python在json中获取值

我需要使用python从json中的键“color”获取值，仅用于第一级

json转储：

[{"color": "red", "value": "10"}, {"color": "blue", "value": [{"color": "black", "value": "15"}]}]

我需要：

[ 'red', 'blue']

我试过：

my_values = my_json_a.get('color')

但有错误：

Error Contents: 'list' object has no attribute 'get'

尝试：

输出：

['red', 'blue']

---

您可以创建一个for循环来循环json字符串，并将每个颜色值附加到一个新列表中

json = [{"color": "red", "value": "10"}, {"color": "blue", "value": [{"color": "black", "value": "15"}]}]
colors =[]
for i in json:
    colors.append(i["color"])
print(colors)

因为

[{"color": "red", "value": "10"}, {"color": "blue", "value": [{"color": "black", "value": "15"}]}]

是一个列表，让我们测试一下：

>>> my_json_a = [{"color": "red", "value": "10"}, {"color": "blue", "value": [{"color": "black", "value": "15"}]}]

>>> type(my_json_a)
<class 'list'>

>>> for i in my_json_a:
...     print(i)
...     print(type(i))

{'value': '10', 'color': 'red'}
<class 'dict'>
{'value': [{'value': '15', 'color': 'black'}], 'color': 'blue'}
<class 'dict'>

---

这

[i['color']表示我的_json中的i]

？@JasonEstibeiro

[dic.get（“color”）表示我的_json中的dic]

会更好

>>> my_json_a = [{"color": "red", "value": "10"}, {"color": "blue", "value": [{"color": "black", "value": "15"}]}]

>>> type(my_json_a)
<class 'list'>

>>> for i in my_json_a:
...     print(i)
...     print(type(i))

{'value': '10', 'color': 'red'}
<class 'dict'>
{'value': [{'value': '15', 'color': 'black'}], 'color': 'blue'}
<class 'dict'>

>>> my_values = [i.get('color') for i in my_json_a]
>>> my_values
['red', 'blue']
>>>