如何在脚本中添加身份验证步骤？

import requests

url = "https://api.example.com"
username = "your_username"
password = "your_password"

response = requests.get(url, auth=(username, password))

import requests

url = "https://api.example.com"
token = "your_token"

headers = {
    "Authorization": f"Bearer {token}"
}

response = requests.get(url, headers=headers)

from requests_oauthlib import OAuth2Session

url = "https://api.example.com"
client_id = "your_client_id"
client_secret = "your_client_secret"
token_url = "https://auth.example.com/token"

oauth = OAuth2Session(client_id, redirect_uri="https://yourapp.com/callback")
token = oauth.fetch_token(token_url, client_secret=client_secret)

response = oauth.get(url)