json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0) while opening json file

Question

i am trying to create blog page using flask and i want to take input file as a config.json which i have created. Please help me i am getting json decoder error i also tried to convert str to utf8 but its showing the error

with open('config.json', 'r', encoding ='utf-8') as c:
    params = json.load(c)["params"]

json content:

{
    "params":
    {
        "local_server":"True",
        "local_uri":"mysql://root:@localhost/codingthunder",
        "prod_uri":"mysql://root:@localhost/codingthunder",
        "fb_url":"https://facebook.com/codingthunder",
        "tw_url":"https://twitter.com/codingthunder",
        "gh_url":"https://github.com/codingthunder",
        "blog_name":"Coding Thunder",
        "tag_line":"A Blog liked by Programmers"
    }
}

output log:

PS C:\Users\ASHISH\Desktop\Coding\Flask> python -u "c:\Users\ASHISH\Desktop\Coding\Flask\Blog Page\main.py"
Traceback (most recent call last):
  File "c:\Users\ASHISH\Desktop\Coding\Flask\Blog Page\main.py", line 7, in <module>
    params = json.load(c)["params"]
  File "C:\Users\ASHISH\AppData\Local\Programs\Python\Python37\lib\json\__init__.py", line 296, in load
    parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
  File "C:\Users\ASHISH\AppData\Local\Programs\Python\Python37\lib\json\__init__.py", line 348, in loads
    return _default_decoder.decode(s)
  File "C:\Users\ASHISH\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 337, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "C:\Users\ASHISH\AppData\Local\Programs\Python\Python37\lib\json\decoder.py", line 355, in raw_decode
    raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Does [this](https://stackoverflow.com/questions/16573332/jsondecodeerror-expecting-value-line-1-column-1-char-0) answer your question ? — Barbaros Özhan, Dec 28 '20 at 15:08
NO i want ans to this question. Why it is throwing an json decoder error? — Ashish Kamble, Dec 28 '20 at 15:23
Your code runs perfectly fine for me. Make sure you are in the right working-direktory and the `config.json` file actually contains data. — wuerfelfreak, Dec 28 '20 at 15:57
Thank you @wuerfelfreak i wrote full file path instead of 'config.json' and it worked! — Ashish Kamble, Dec 28 '20 at 16:34
@AshishKamble You'r welcome. I added my comment as an answer. Please accept. — wuerfelfreak, Dec 28 '20 at 19:42

score 1 · Answer 1 · answered Dec 28 '20 at 18:24

Expecting value: line 1 column 1 (char 0) hints that there is no value at the beginning of the file, so no content in the parsed file.

This could mean, that

the file is empty
you opened the wrong or a non existing file
you are using a relative path and your working direktory is wrong (e.g. the direktory you execute your program in)

json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0) while opening json file

1 Answers1