The code you provided includes an error traceback, which indicates...

August 27, 2025 at 04:31 PM

File "C:\Users\balexander\AppData\Local\Programs\Python\Python312\Lib\site-packages\requests\models.py", line 974, in json return complexjson.loads(self.text, **kwargs) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\balexander\AppData\Local\Programs\Python\Python312\Lib\json\__init__.py", line 346, in loads return _default_decoder.decode(s) ^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\Users\balexander\AppData\Local\Programs\Python\Python312\Lib\json\decoder.py", line 341, in decode raise JSONDecodeError("Extra data", s, end) json.decoder.JSONDecodeError: Extra data: line 1 column 16 (char 15) During handling of the above exception, another exception occurred: Traceback (most recent call last): File "c:\Users\balexander\Documents\Handy Scripts\Get-DuplicateDevicesSentinel1.py", line 15, in <module> _agents = _response.json().get("data", []) ^^^^^^^^^^^^^^^^ File "C:\Users\balexander\AppData\Local\Programs\Python\Python312\Lib\site-packages\requests\models.py", line 978, in json raise RequestsJSONDecodeError(e.msg, e.doc, e.pos) requests.exceptions.JSONDecodeError: Extra data: line 1 column 16 (char 15)

The code you provided includes an error traceback, which indicates the program attempted to parse JSON from an HTTP response but encountered invalid JSON data. Here's what this code and error mean:

What Happens in the Code:

  1. The _response.json() call attempts to parse the body of an HTTP response (self.text) using a method provided by the requests library.
  2. Internally, requests uses Python's built-in json module (json.loads(), specifically) to decode the response text as JSON.
  3. The json.loads() function failed because the content of the HTTP response (self.text) does not conform to proper JSON formatting.
  4. The specific error is JSONDecodeError: Extra data, which occurs when json.loads() encounters unexpected or invalid characters after it has parsed a valid JSON object. For example, you might have content like:
    {"key": "value"} extra-data
    
    Here, extra-data causes the error because JSON must consist of only a single valid object or array (and nothing else).

Problems in Your Code:

  • _response.json() tried to decode an invalid JSON response. This could happen due to:
    • The server providing malformed JSON.
    • The response containing additional data (like logging/debug info, HTML, or plain text) that is not valid JSON.
    • The HTTP endpoint returning something other than JSON (for example, HTML or plain text).

How to Fix:

  1. Inspect the Response Content: Add a print statement or log _response.text, so you can inspect the actual response body that caused the error:
    print(_response.text)  # Check what server sent back
    
  2. Check the API Documentation: Ensure the endpoint you are calling explicitly states that it returns a JSON response, and confirm its format.
  3. Handle Non-JSON Responses: Before calling .json(), verify that the response content type is correct:
    if 'application/json' in _response.headers.get('Content-Type', ''):
        _agents = _response.json().get("data", [])
    else:
        print("Non-JSON response received!")
        print(_response.text)
    
  4. Handle Unexpected Characters: If the response contains valid JSON data with trailing or leading garbage, you might need to manually clean it up before parsing.

Summary of Code Behavior:

The code tries to decode the HTTP response as JSON but encounters an invalid response (with extra data after valid JSON). The program throws a JSONDecodeError, and the requests library re-raises it as requests.exceptions.JSONDecodeError. Diagnostic steps outlined above can help you resolve the issue.

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