Starting with Requests version 2.4.2, you can use the json= parameter (which takes a dictionary) instead of data= (which takes a string) in the call:
>>> import requests
>>> r = requests.post('http://httpbin.org/post', json={"key": "value"})
>>> r.status_code
200
>>> r.json()
{'args': {},
'data': '{"key": "value"}',
'files': {},
'form': {},
'headers': {'Accept': '*/*',
'Accept-Encoding': 'gzip, deflate',
'Connection': 'close',
'Content-Length': '16',
'Content-Type': 'application/json',
'Host': 'httpbin.org',
'User-Agent': 'python-requests/2.4.3 CPython/3.4.0',
'X-Request-Id': 'xx-xx-xx'},
'json': {'key': 'value'},
'origin': 'x.x.x.x',
'url': 'http://httpbin.org/post'}
ReqBin
reqbin.com › code › python › m2g4va4a › python-requests-post-json-example
How do I post JSON using the Python Requests Library?
The json= parameter takes a dictionary and automatically converts it to a JSON string. The Request Library automatically adds the Content-Type: application/json header to your request when using the json= parameter. In this Python Requests POST JSON example, we send a JSON data string to the ...
Delft Stack
delftstack.com › home › howto › python › post json data with requests python
How to POST JSON Data With requests in Python | Delft Stack
March 4, 2025 - The simplest way to post JSON data ... is by using the json parameter in the post method. This method automatically serializes your Python dictionary into a JSON string, making it effortless to send data to the server. ... import requests url = "https://api.example.com/data" data = { "name": "John Doe", "email": "john.doe@example.com" } response = requests.post(url, ...
How can I POST JSON data with Python's Requests library? - Stack Overflow
I need to POST JSON content from a client to a server. I'm using Python 2.7.1 and simplejson. The client is using Requests. The server is CherryPy. I can GET hard-coded JSON content from the server... More on stackoverflow.com
I don't really understand Requests python module
You might want to start with some basics on client-server communication before delving into networking/web-dev side of Python. As others have mentioned here, requests docs is a great place to learn about the library, but if you don't know what a 'POST' or 'GET' method is or what's a request header used for, the docs won't make much sense. There are plenty of free online resources which explains the above concepts. Listing some of them which I think should cover your case: https://www.freecodecamp.org/news/http-request-methods-explained/ https://doc.oroinc.com/api/http-methods/ https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Objects/JSON More on reddit.com
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July 24, 2022[Python] How to parse JSon response from a post request (Requests)
If I run your code I get NameError on session, maybe you need to define that for it to work? More on reddit.com
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March 2, 2017APIs: Params= vs json= whats the difference?
Maybe it's a good idea to study the basics of HTTP methods: https://developer.mozilla.org/en-US/docs/Web/HTTP/Methods A GET request has no body, so the only (practical) way of delivering data with it is through its url, so GET hostname/api/some_object/?name='test' The requestst library supports that via its params= parameter. So in this case you would do params={'name': 'test'}. Then methods like PUT and POST are meant to deliver data through their body, for which you would normally use the data= parameter. However to simplify delivering a Python structure (dict/list or some combination thereof) as a JSON encoded body, it supports that via its json= parameter. It then also sets the correct content-type header. More on reddit.com
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November 26, 2021Videos
REST APIs, Requests Module and JSON in Python (Python ...
04:41
Python Requests: How To Send POST Requests - YouTube
04:42
Sending JSON Data Using Python Requests - YouTube
00:31
How to POST JSON data with Python requests library #shorts - YouTube
03:43
How to POST JSON data with Python Requests? - YouTube
02:41
Python Requests | JSON - YouTube
W3Schools
w3schools.com › python › ref_requests_post.asp
Python Requests post Method
Python Examples Python Compiler Python Exercises Python Quiz Python Challenges Python Practice Problems Python Server Python Syllabus Python Study Plan Python Interview Q&A Python Bootcamp Python Training ... import requests url = 'https://www.w3schools.com/python/demopage.php' myobj = {'somekey': 'somevalue'} x = requests.post(url, json = myobj) print(x.text) Run Example »
Stack Abuse
stackabuse.com › how-to-post-json-data-using-requests-library-in-python
How to POST JSON Data Using requests Library in Python
June 27, 2023 - In this article, we took a look at how to use the requests library to make a POST request with JSON data in Python.
Top answer 1 of 10
1809
Starting with Requests version 2.4.2, you can use the json= parameter (which takes a dictionary) instead of data= (which takes a string) in the call:
>>> import requests
>>> r = requests.post('http://httpbin.org/post', json={"key": "value"})
>>> r.status_code
200
>>> r.json()
{'args': {},
'data': '{"key": "value"}',
'files': {},
'form': {},
'headers': {'Accept': '*/*',
'Accept-Encoding': 'gzip, deflate',
'Connection': 'close',
'Content-Length': '16',
'Content-Type': 'application/json',
'Host': 'httpbin.org',
'User-Agent': 'python-requests/2.4.3 CPython/3.4.0',
'X-Request-Id': 'xx-xx-xx'},
'json': {'key': 'value'},
'origin': 'x.x.x.x',
'url': 'http://httpbin.org/post'}
2 of 10
561
It turns out I was missing the header information. The following works:
import requests
url = "http://localhost:8080"
data = {'sender': 'Alice', 'receiver': 'Bob', 'message': 'We did it!'}
headers = {'Content-type': 'application/json', 'Accept': 'text/plain'}
r = requests.post(url, data=json.dumps(data), headers=headers)
Carmatec
carmatec.com › home › python requests post json: best practices & examples 2026
Python Requests POST JSON: Best Practices & Examples 2026
February 3, 2026 - python from requests.auth import HTTPBasicAuth r = requests.post(url, json=payload, auth=HTTPBasicAuth("user", "pass")) # or shorthand r = requests.post(url, json=payload, auth=("user", "pass")) python def get_access_token(): r = requests.post( "https://auth.example.com/token", data={"grant_type": "client_credentials", "client_id": "...", "client_secret": "..."} ) return r.json()["access_token"] token = get_access_token() r = requests.post(api_url, json=data, headers={"Authorization": f"Bearer {token}"})
Apidog
apidog.com › blog › python-requests-post-json
Python Requests: How to POST JSON Data with Ease in 2026
February 4, 2026 - Step 2: Click on the Request tab and select POST from the dropdown menu. Step 3: Enter the URL of the API endpoint you want to test, in the Headers section, add any required headers.
W3docs
w3docs.com › python
How to POST JSON data with Python Requests?
Here is a code snippet that ... headers = {'Content-type': 'application/json'} response = requests.post('https://httpbin.org/post', data=json_data, headers=headers) # Print the response print(response.text) ...
GitHub
gist.github.com › thepacketgeek › 6691361
POST JSON from Python with Requests · GitHub
POST JSON from Python with Requests · Raw · python-post-json.py · This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Apify
blog.apify.com › python-post-request
How to post JSON data with Python Requests
December 7, 2025 - The Python Requests library is widely used for making HTTP requests. Here are some tips for making effective POST requests: Sending JSON data: The best way to send JSON data is to use the json parameter of the requests.post() function.
PYnative
pynative.com › home › python › json › python post json using requests library
Python Post JSON using requests library
May 14, 2021 - Select POST request and enter your service POST operation URL. Click on Headers. In the key column enter Content-Type and in the Value column enter application/json. Click on the body section and click the raw radio button. enter your JSON data.
Codegive
codegive.com › blog › requests_python_json_post.php
Mastering <code>requests</code> Python JSON POST (2026): Unleash Your API Communication Power Today!
March 24, 2026 - Example 5: Robust Error Handling for POST Requests5. Common Mistakes When Using requests python json post
Plain English
python.plainenglish.io › how-to-send-post-requests-with-json-data-using-python-requests-daaffa0a3335
How to Send POST Requests with JSON Data Using Python Requests? | Python in Plain English
April 25, 2025 - Python handles this beautifully with dictionaries and lists. import requests url = "https://httpbin.org/post" nested_data = { "user": { "name": "Alice", "contact": { "email": "alice@example.com", "phone": "123-456-7890" } }, "roles": ["admin", "editor"] } response = requests.post(url, json=nested_data) print(response.json()) # Echoed response
ProxiesAPI
proxiesapi.com › articles › sending-and-receiving-json-data-with-python-requests
Sending and Receiving JSON Data with Python Requests | ProxiesAPI
Requests will serialize the dict to JSON and add the correct Content-Type header for you: ... import requests data = { 'name': 'John Doe', 'age': 30 } response = requests.post('https://api.example.com/users', json=data)
LoadForge
loadforge.com › directory › getting-started › json-posts
POSTing JSON data - Getting Started - LoadForge - LoadForge
Setup and Imports Start by importing necessary modules like time, json, and relevant locust classes. Define User Behavior Create a class (QuickstartUser) that extends the HttpUser class from Locust. This will define the behavior of a simulated user. Set Waiting Time Use wait_time to simulate the wait period between tasks. This example uses a randomized wait time of 3 to 5 seconds. Define the Task Within the user class, define a task named api_page. This task sends a POST request with the payload.
Datasciencebyexample
datasciencebyexample.com › 2023 › 03 › 12 › using-json-or-data-parameter-in-requests-post
Difference between `json` and `data` parameter of the HTTP POST Requests with JSON Data in Python using the Requests Library | DataScienceTribe
March 12, 2023 - In this example, we define a url variable that represents the endpoint where we want to send the POST request. We also define a payload variable that contains the JSON data we want to send. To send the POST request, we use the requests.post() method and pass the url and json parameters.
GeeksforGeeks
geeksforgeeks.org › python › python-requests-post-request-with-headers-and-body
Python requests - POST request with headers and body - GeeksforGeeks
July 23, 2025 - import requests url = "https://httpbin.org/post" data = { "id": 1001, "name": "geek", "passion": "coding", } response = requests.post(url, json=data) print("Status Code", response.status_code) print("JSON Response ", response.json()) Output: ...
DEV Community
dev.to › apilover › python-requests-mastering-json-data-post-leh
Python Requests: Mastering JSON Data POST - DEV Community
February 12, 2025 - POST is ideal for creating resources (e.g., submitting a form, uploading a file). import requests url = "https://api.example.com/users" payload = {"name": "Ashley", "role": "Developer"} _# Automatically sets Content-Type to application/json _ response = requests....
AnyIP
anyip.io › blog › python-requests-post
How to make a POST with the Python Requests module?
April 2, 2025 - { "args": {}, "data": "", "files": {}, "form": { "password": "strongpassword", "username": "jeremylp" }, "headers": { "Accept": "*/*", "Accept-Encoding": "gzip, deflate", "Content-Length": "41", "Content-Type": "application/x-www-form-urlencoded", "Host": "httpbin.org", "User-Agent": "python-requests/2.32.3", "X-Amzn-Trace-Id": "Root=1-66eb33aa-7af65511275545d24f8a9f17" }, "json": null, "origin": "IP_CENSORED", "url": "https://httpbin.org/post" } In this short section, we’ll see an example of how to specify the data format and the data encoding.
Oxylabs
oxylabs.io › blog › how-to-send-post-python-request
How to Send a POST with Python Requests?
To send a POST request using the Python requests library, you need to use the requests.post() method. This method allows you to send data to a server or API and is useful for tasks such as submitting form data or uploading files. POST requests typically include data in the request body. This data can be sent as form-encoded key-value pairs or JSON. Here’s an example of sending form data with the correct headers: