JSONDecodeError:期望值:第7行第1列(字符6) -当我使用json.load()方法时

Question

我在谷歌Colab工作。我使用json.load()方法从json文件创建字典。代码是：

import json

! wget -O train_set.json https://github.com/rslab-ntua/MSc_GBDA/blob/master/2020/Exercise_ML2/train_split.json

with open('train_set.json') as f:
  train_set = json.load(f)

我得到以下错误：

---------------------------------------------------------------------------
JSONDecodeError                           Traceback (most recent call last)
<ipython-input-20-1a34dc9ec442> in <module>()
      4 
      5 with open('train_set.json') as f:
----> 6   train_set = json.load(f)

3 frames
/usr/lib/python3.7/json/decoder.py in raw_decode(self, s, idx)
    353             obj, end = self.scan_once(s, idx)
    354         except StopIteration as err:
--> 355             raise JSONDecodeError("Expecting value", s, err.value) from None
    356         return obj, end

JSONDecodeError: Expecting value: line 7 column 1 (char 6)

json文件的前几行是：

​

为什么会出现此消息错误？

Answer 1

您正在使用的url会将您带到包含所需数据的页面，但是数据位于不同的url中。将“blob”更改为“raw”

r = requests.get('https://github.com/rslab-ntua/MSc_GBDA/raw/master/2020/Exercise_ML2/train_split.json').json()

print(r)

['2750/River/River_2132.jpg',
 '2750/HerbaceousVegetation/HerbaceousVegetation_868.jpg',
 '2750/Highway/Highway_316.jpg',
 '2750/Residential/Residential_2628.jpg',
 '2750/Industrial/Industrial_1304.jpg',
 '2750/AnnualCrop/AnnualCrop_1615.jpg',
 '2750/SeaLake/SeaLake_1227.jpg',
 '2750/SeaLake/SeaLake_677.jpg',
 '2750/Forest/Forest_2496.jpg',
 '2750/Forest/Forest_2532.jpg',....