Simple Python 'requests' failing with process api - RENDERER_EXCEPTION

Apps / Services Python SDK
1

Hi all.

I am exploring the process API and have managed to make some requests in Postman.

I used Python code generated from Postman to do the same from a simple Python script. There were some obvious syntax errors around the evalscript string value, but after resolving this and attempting to execute the script, I am constantly presented with “HTTP 400 Bad Request”,“code”:“RENDERER_EXCEPTION”

I have tried looking for similar posts, but none were really helpful. Maybe someone can point me in the right direction. Here is my code:

import requests
import json

url = "https://services.sentinel-hub.com/api/v1/process"

payload = {
    "request": {
        "input": {
            "bounds": {
                "bbox": [
                    1360000, 5121900, 1370000, 5131900
                ],
                "properties": {
                    "crs": "http://www.opengis.net/def/crs/EPSG/0/3857"
                }
            },
            "data": [
                {
                    "type": "sentinel-1-grd",
                    "dataFilter": {
                        "timeRange": {
                            "from": "2019-02-02T00:00:00Z",
                            "to": "2019-04-02T23:59:59Z"
                        }
                    },
                    "processing": {
                        "orthorectify": "true",
                        "demInstance": "COPERNICUS_30"
                    }
                }
            ]
        },
        "output": {
            "width": 512,
            "height": 512,
            "responses": [
                {
                    "identifier": "default",
                    "format": {
                        "type": "image/png"
                    }
                }
            ]
        }
    },
    "evalscript": """//VERSION=3
                    function setup() { 
                        return { 
                            input: [\"VV\"], 
                            output: { 
                                id:\"default\", bands: 1
                            } 
                        } 
                    } 
                    function evaluatePixel(samples) { 
                        return [2 * samples.VV] 
                    }"""
}

files = [

]

headers = {
    'Content-Type': 'multipart/form-data',
    'Accept': 'image/png',
    'Authorization': 'Bearer <token>'
}

data = json.dumps(payload)

print("HEADERS", headers)
print("DATA", data)

response = requests.request(
    "POST", url, headers=headers, data=data, files=None) #also tried payload for data param, as well as in json param, no luck

print(response.text)
2

Can you confirm that you have set the token in headers to an actual token value?

'Authorization': 'Bearer <token>'
3

Yip. That works perfectly, thanks. No problem there.

I am assuming the problem lies somewhere with how the evalscript is prepared, but not sure