HTTP PUT request in Python using JSON data

Question

I want to make PUT request in Python using JSON data as

data = [{"$TestKey": 4},{"$TestKey": 5}]

Is there any way to do this?

import requests
import json

url = 'http://localhost:6061/data/'

data = '[{"$key": 8},{"$key": 7}]'

headers = {"Content-Type": "application/json"}

response = requests.put(url, data=json.dumps(data), headers=headers)

res = response.json()

print(res)

Getting this error

requests.exceptions.InvalidHeader: Value for header {data: [{'$key': 4}, {'$key': 5}]} must be of type str or bytes, not <class 'list'>

Have a look for python-requests.org/en/master

atline
– atline

2018-09-26 05:40:04 +00:00
Commented Sep 26, 2018 at 5:40 — atline
– atline, Commented Sep 26, 2018 at 5:40

blhsing · Accepted Answer · 2018-09-26 06:05:22Z

24

Your data is already a JSON-formatted string. You can pass it directly to requests.put instead of converting it with json.dumps again.

Change:

response = requests.put(url, data=json.dumps(data), headers=headers)

to:

response = requests.put(url, data=data, headers=headers)

Alternatively, your data can store a data structure instead, so that json.dumps can convert it to JSON.

Change:

data = '[{"$key": 8},{"$key": 7}]'

to:

data = [{"$key": 8},{"$key": 7}]

answered Sep 26, 2018 at 6:05

blhsing

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2 Comments

dumbledad Over a year ago

But this will not change the Content-Type in the request header to application/json

blhsing Over a year ago

@dumbledad Why not? It's defined in the headers dict as posted in the OP's question.

monkut · Accepted Answer · 2022-10-29 05:22:43Z

13

HTTP methods in the requests library have a json argument that, when given, will perform json.dumps() for you and set the Content-Type header to application/json:

data = [{"$key": 8},{"$key": 7}]
response = requests.put(url, json=data)

edited Oct 29, 2022 at 5:22

answered Mar 12, 2021 at 0:53

monkut

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Comments

Viet Le · Accepted Answer · 2023-10-14 00:46:02Z

0

# Python examples

I used the following script to update mapped IP for a VIP object in FortiGate 
firewall. 

import requests
import urllib3

def update_vip(current_vip, new_vip, new_ip):
    urllib3.disable_warnings()        # disable HTTPS certificate verify warning
    json_body = {
        "name": new_vip,
        "id": 65535,
        "mappedip": [
            {
                "range": new_ip
            }
        ]
    }
    fgt_url = ("https://<FGT_IP>/api/v2/cmdb/firewall/vip/" + current_vip +
               ("?access_token=<accesstoken>"))
    res = requests.put(fgt_url, json=json_body, verify=False)

if __name__ == '__main__':
    current_vip = "VIP_Collector_SSH"
    new_vip = "VIP_Collector_SSH"
    new_ip = "172.16.31.32"
    update_vip(current_vip=current_vip, new_vip=new_vip, new_ip=new_ip)

answered Oct 14, 2023 at 0:46

Viet Le

1

1 Comment

Diego Borba Over a year ago

Your answer could be improved with additional supporting information. Please edit to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers in the help center.

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