无法将cURL POST命令转换为python请求

我试图将cURL块转换成python请求。执行此操作时,会出现以下错误:

{'error': 'invalid_request', 'error_description': 'request is missing a required parameter or malformed.'}

我翻译错了什么?

POST /identity/v1/oauth2/token HTTP/1.1
Host: api.sandbox.ebay.com
Authorization: Basic <B64-encoded-oauth-credentials>
Content-Type: application/x-www-form-urlencoded

grant_type=authorization_code&code=<URL-decoded-auth-code>&redirect_uri=<your_redirect_uri>

headers = {
    'Content-Type': 'application/x-www-form-urlencoded',
a    'Authorization': f'Basic {<Base64 encoded value>}'
}
data = {
    'grant_type': 'authorization_code',
    'code': client_id  # str,
    'redirect_uri': url  # str,
    'scope': 'https://api.ebay.com/oauth/api_scope/sell.inventory.readonly',
}

def get_oath_token():
    url = 'https://api.ebay.com/identity/v1/oauth2/token'
    r = requests.post(url, headers=headers, data=data)
    print(r.json())