Post Request ok with postman but failed using code in python

Explanation of the problem

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Problem solution for Post Request ok with postman but failed using code in python

When working with web APIs, it is common to send and receive data in JSON format. The HTTP PUT request is often used to update existing resources, and it is often necessary to send JSON data with a PUT request. The Requests library is a popular Python library for making HTTP requests, and it provides several convenient methods for sending data with HTTP requests. However, when sending JSON data with a PUT request using the Requests library, it is important to properly serialize the data to JSON format.

One common issue when sending JSON data with a PUT request using the Requests library is that the server may expect the data to be sent in a specific format. While it is possible to provide the data as a dictionary or other Python data type, the server may not recognize this format and may return an error. To avoid this issue, it is recommended to serialize the data to a JSON string using the “json.dumps” method. This method converts a Python object to a JSON string, which can be sent as the data with a PUT request.

To perform a PUT request with JSON data using the Requests library, first create a Python dictionary object containing the data to be sent. Next, use the “json.dumps” method to serialize the data to a JSON string. Finally, use the Requests library to send the PUT request with the URL, headers, and data provided as arguments. The data argument should be set to the serialized JSON string. By properly serializing the data to JSON format, the server is more likely to recognize the data and process the request successfully.

In summary, when sending JSON data with a PUT request using the Requests library, it is important to properly serialize the data to JSON format using the “json.dumps” method. This ensures that the server can properly recognize and process the data. The example code provided in the answers demonstrates how to use the Requests library to perform a PUT request with JSON data, where the data is a dictionary serialized to a JSON string using the “json.dumps” method. By following this approach, developers can ensure that their PUT requests with JSON data are sent and processed correctly.

Other popular problems with request request

A brief introduction to request request

request is a popular and versatile module in Node.js used for making HTTP requests to servers. It provides an easy-to-use API that abstracts away the complexities of making HTTP requests, while still offering advanced features for handling responses, managing cookies, and setting custom headers.

The request module can be used to make various types of HTTP requests, such as GET, POST, PUT, DELETE, PATCH, and more. It supports both HTTP and HTTPS protocols, and can be used to interact with RESTful APIs or scrape web pages. Additionally, it offers several options for customizing the request, such as setting headers, cookies, and query parameters, as well as handling timeouts and redirects. The response from the server is passed back in a callback function, which can be used to handle the response data, errors, and status codes. Overall, request is a flexible and powerful module for handling HTTP requests in Node.js applications.

Most popular use cases for request request

const request = require('request');

request('http://www.example.com', function (error, response, body) {
  if (!error && response.statusCode == 200) {
    console.log(body);
  }
});

const request = require('request');

const options = {
  url: 'http://www.example.com/api',
  headers: {
    'User-Agent': 'request'
  },
  form: {
    key: 'value'
  }
};

request.post(options, function (error, response, body) {
  if (!error && response.statusCode == 200) {
    console.log(body);
  }
});

const request = require('request');
const fs = require('fs');

const url = 'http://www.example.com/file.mp3';
const file = fs.createWriteStream('file.mp3');

request.get(url)
  .on('response', function(response) {
    console.log(response.statusCode);
    console.log(response.headers['content-type']);
  })
  .on('error', function(err) {
    console.log(err);
  })
  .pipe(file);