Python - Requests generated code doesn't work

Description: When running the code generator for Python - Requests, it generated a script that gets a 400 response doing a POST to ArcGI :
b'{"error":{"code":400,"error":"invalid_request","error_description":"client_id not specified","message":"client_id not specified","details":[]}}'

Reproduce: Create a POST request to https://www.arcgis.com/sharing/rest/oauth2/token using:
'client_id': "your_client_id",
'client_secret': "your_client_secret",
'grant_type': "client_credentials"
Then use the code generation for Python - Requests and try to run the script

Expected code snippet and corresponding request
The fix in the python generated code was to change the data variable called in:
response = requests.request("POST", url, headers=headers, data = payload, files = files)
to instead say (data => params):
response = requests.request("POST", url, headers=headers, params=payload, files=files)

Screenshots

Start with the Python - Requests code generator and reproduce the ArcGIS OAuth token request described in the issue. Compare the generated call with the expected snippet, then verify that the generated request uses the payload in the expected argument and no longer produces the reported missing-client_id response.