python requests post invalid json

Python Requests Post Invalid JSON

If you are facing the error "Python Requests Post Invalid JSON" while sending a POST request using the requests library in Python, then it means that the JSON data you are trying to send is not in the correct format. JSON stands for JavaScript Object Notation, and it is a lightweight data interchange format that is easy for humans to read and write and easy for machines to parse and generate. In order to fix this error, you will need to make sure that the data you are sending is valid JSON.

What is JSON?

JSON is a text format that is completely language-independent, but it uses conventions that are familiar to programmers of the C family of languages, including C, C++, C#, Java, JavaScript, Perl, Python, and many others. It is based on a subset of the JavaScript Programming Language Standard ECMA-262 3rd Edition - December 1999. It is often used to transmit data between a server and a web application, as an alternative to XML.

How to Fix the Error?

If you are getting the "Python Requests Post Invalid JSON" error, then you should check the following things:

  • Make sure that your JSON data is properly formatted.
  • Check that all the keys and values in the JSON data are enclosed in double quotes.
  • Make sure that there are no trailing commas in the JSON data.
  • Check that there are no syntax errors in your JSON data.
  • Verify that you are setting the correct content-type header in your request.

Here is an example of how to send a POST request with valid JSON data using the requests library in Python:

import requests
import json

url = ''
headers = {'content-type': 'application/json'}
data = {'key': 'value'}
json_data = json.dumps(data)

response =, data=json_data, headers=headers)


In the above code, we first import the requests and json modules. We then define the URL of the endpoint we want to send the POST request to, set the content-type header to application/json, and define our data in a dictionary. We then convert the dictionary to valid JSON using the json.dumps() method. Finally, we send the POST request using the method and print the response.

If you are still facing issues after trying the above steps, then you may want to check the server-side code to see if there are any issues on that side.