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[b]"How to handle JSON responses with Python requests json?"[/b] or [b]"Best practices for parsing JSON data using - Printable Version

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[b]"How to handle JSON responses with Python requests json?"[/b] or [b]"Best practices for parsing JSON data using - MaskIP77 - 28-05-2024

"Python requests json - Why is my response not decoding properly?"

Hey folks!

So I'm trying to work with python requests json, but sometimes the response just... doesn't decode? Like, I get this weird string instead of a clean dict.

Anyone else run into this?

I usually do `response.json()` and call it a day, but sometimes it throws errors or gives me nonsense. Am I missing something? Maybe the response isn’t *actually* JSON?

Also, pro tip: check `response.headers` to see if the content-type is `application/json`. If not, that’s probably your issue.

What’s your go-to fix for this? Share your hacks!

(And yeah, I’ve tried `json.loads(response.text)` too—still weird sometimes. Ugh.)


“” - cloakByte99 - 25-06-2024

Hey! Had the same issue last week. Turns out some APIs send JSON with a BOM (byte order mark) at the start, which messes up decoding.

Try `response.content.decode('utf-8-sig')` before parsing. Works like a charm for me.

Also, Postman is great for checking raw responses—sometimes the API is just sending malformed JSON.


“” - CloudDrifter99 - 20-08-2024

Ugh, python requests json can be finicky. If `response.json()` fails, check `response.status_code` first. Might be a 404 or 500 error disguised as a JSON issue.

Also, `print(response.text)` to see the raw output. Sometimes it’s HTML error pages or plain text, not JSON.


“” - deepSurfer77 - 16-11-2024

Pro tip: Use `response.raise_for_status()` before decoding. If the request fails, it’ll throw an error early instead of giving you garbage data.

And yeah, double-check `Content-Type` in headers. Some APIs are just... bad.


“” - deepTorX99 - 03-12-2024

If you’re dealing with weird encoding, try `json.loads(response.text.encode('utf-8').decode('unicode-escape')`. Sounds hacky, but it’s saved me a few times.

Also, `curl` the endpoint manually to see what’s *really* coming back. Might not be JSON at all!


“” - stealthDrift77 - 18-01-2025

Been there! Sometimes the response is *almost* JSON but has trailing commas or comments.

Try `demjson` (pip install demjson)—it’s more forgiving than the standard lib.

Or just... yell at the API devs to fix their stuff.


“” - MaskIP77 - 11-02-2025

Wow, thanks for all the tips! Didn’t even think about BOM or gzip issues.

Tried `response.content.decode('utf-8-sig')` and it worked! Turns out the API was sending a BOM silently.

Still weird that python requests json doesn’t handle that by default, but hey, now I know.

Gonna check out `jq` and `demjson` too—sounds handy for debugging. Appreciate the help!


“” - StealthVoyager99 - 07-03-2025

Quick fix: Wrap `response.json()` in a try-except. If it fails, log `response.text` to see the culprit.

Also, `chardet` can help detect encoding if the response is weirdly encoded.

Python requests json is usually solid, but APIs? Not so much.


“” - maskedJumpX99 - 11-03-2025

If `response.json()` fails, the response might be gzipped. Check for `Content-Encoding: gzip` in headers.

You can manually decompress with `zlib` if needed.

Or just use `requests`’ built-in decompression—should handle it automatically.


“” - swizzForce - 11-03-2025

Had this happen with APIs that return JSONP instead of JSON. Look for callback wrappers like `callback({...})`.

Strip that junk first, then parse.

Also, `jq` (command-line tool) is great for debugging JSON responses.