Reading JSON files from a folder and saving them as numpy arrays in a list

Asked Dec 21 '19 at 10:22

Active Dec 21 '19 at 11:05

Viewed 120 times

I am trying to read a folder that has multiple .json files in them. I want to convert each file into numpy array. This is my code

labelarray = []
for filename in glob.glob(r'C:/Users/samin/Desktop/Wolution/Datastets/Grass/label/*.json'):

    json_img = json.load(filename)
    numpy_2d_arrays = np.array(json_img)
    labelarray.append(im2arr)

but I get an error:

File "<unknown>", line 1
    C:/Users/samin/Desktop/Wolution/Datastets/Grass/label\Fuji V1 B1 24.05.json
     ^
SyntaxError: invalid syntax

I have no idea what causes this error. Any hints will be appreciated.

edited Dec 21 '19 at 10:35

asked Dec 21 '19 at 10:22

parastoo91

That error aside, you shouldn't be using `ast.literal_eval` for JSON, there is a json module for that. – roganjosh Dec 21 '19 at 10:27
I just changed it to json.load(filename) and now get another error: AttributeError: 'str' object has no attribute 'read' – parastoo91 Dec 21 '19 at 10:33
1

You still need to open the file first – roganjosh Dec 21 '19 at 10:37
@parastoo91 You need to use `json.load(open(filename))` – mousetail Dec 21 '19 at 10:41
I added: json_img = json.load(open(filename, 'r')) and it works. Thanks a lot. – parastoo91 Dec 21 '19 at 10:42
Try it without the preceding `r` on the string. I'm a bit stumped at why this is a `SyntaxError` – roganjosh Dec 21 '19 at 10:43
Note: the array's `dtype` will be `object` if the list elements are dictionaries and not simple ones – Pynchia Dec 21 '19 at 11:24

Reading JSON files from a folder and saving them as numpy arrays in a list

0 Answers0