Utilización de una API REST: Go vs Python

/*
Fetch the NameAPI.org REST API and turn JSON response into a Go struct.

Sent data have to be JSON data encoded into request body.
Send request headers must be set to 'application/json'.
*/

package main

import (
    "encoding/json"
    "io/ioutil"
    "log"
    "net/http"
    "strings"
)

// url of the NameAPI.org endpoint:
const (
    url = "http://rc50-api.nameapi.org/rest/v5.0/parser/personnameparser?" +
        "apiKey=<API-KEY>"
)

func main() {

    // JSON string to be sent to NameAPI.org:
    jsonString := `{
        "inputPerson": {
            "type": "NaturalInputPerson",
            "personName": {
                "nameFields": [
                    {
                        "string": "Petra",
                        "fieldType": "GIVENNAME"
                    }, {
                        "string": "Meyer",
                        "fieldType": "SURNAME"
                    }
                ]
            },
            "gender": "UNKNOWN"
        }
    }`
    // Convert JSON string to NewReader (expected by NewRequest)
    jsonBody := strings.NewReader(jsonString)

    // Need to create a client in order to modify headers
    // and set content-type to 'application/json':
    client := &http.Client{}
    req, err := http.NewRequest("POST", url, jsonBody)
    if err != nil {
        log.Println(err)
    }
    req.Header.Add("Content-Type", "application/json")
    resp, err := client.Do(req)

    // Proceed only if no error:
    switch {
    default:
        // Create a struct dedicated to receiving the fetched
        // JSON content:
        type Level5 struct {
            String   string `json:"string"`
            TermType string `json:"termType"`
        }
        type Level41 struct {
            Gender     string  `json:"gender"`
            Confidence float64 `json:"confidence"`
        }
        type Level42 struct {
            Terms []Level5 `json:"terms"`
        }
        type Level3 struct {
            Gender           Level41 `json:"gender"`
            OutputPersonName Level42 `json:"outputPersonName"`
        }
        type Level2 struct {
            ParsedPerson Level3 `json:"parsedPerson"`
        }
        type RespContent struct {
            Matches []Level2 `json:"matches"`
        }

        // Decode fetched JSON and put it into respContent:
        respContentBytes, err := ioutil.ReadAll(resp.Body)
        if err != nil {
            log.Println(err)
        }
        var respContent RespContent
        err = json.Unmarshal(respContentBytes, &respContent)
        if err != nil {
            log.Println(err)
        }
        log.Println(respContent)
    case err != nil:
        log.Println("Network error:", err)
    case resp.StatusCode != 200:
        log.Println("Bad HTTP status code:", err)
    }

}