请写一段获取token的代码

以下是使用Python语言获取token的示例代码：

import requests

url = 'https://your_token_api.com'
headers = {'Content-Type': 'application/json'}

payload = {
    "username": "your_username",
    "password": "your_password"
}

response = requests.post(url, headers=headers, json=payload)

if response.status_code == 200:
    token = response.json()['access_token']
    print("Token obtained successfully: ", token)
else:
    print("Failed to obtain token")

请将 `your_token_api.com` 替换为实际的 API 地址，并填写正确的用户名和密码。如果一切顺利，上述代码将打印出获得的token。