[Python] Curl command and postman is working by JS fetch isn't

Can someone suggest on the below issue please? I am able to call following API using CURL and also using Postman but when I try to write some code, Python or JS to fetch the response, it fails. Not even able to print the response code in the programs. I am using my personal laptop and there is no VPN.

Following code not Working: Getting response code 403 (requests.exceptions.HTTPError: 403 Client Error: Forbidden for url: https://openbanking.api.rabobank.com.au/public/cds-au/v1/banking/products)

1. 
   Javascript:
   
   const response = await fetch("https://openbanking.api.rabobank.com.au/public/cds-au/v1/banking/products", {
   headers: { "x-v": "3" }
   });
2. 
   Python:
   
   BASE_URL = "https://openbanking.api.rabobank.com.au/public/cds-au/v1/banking/products"
   HEADERS = {"x-v": "3"}
   
   resp = requests.get(BASE_URL, headers=HEADERS)

Following things are working:

1. 
   CURL:
   
   curl -X GET "https://openbanking.api.rabobank.com.au/public/cds-au/v1/banking/products" -H "x-v: 3"
2. 
   Postman is working for the same API
   

I want to write a program and get the response to process it further.

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