如何通过google-auth-library发出post请求？

pip install google-auth google-auth-oauthlib google-auth-httplib2

import requests
from google.auth import compute_engine
from google.auth.transport.requests import Request

def get_credentials():
    credentials = compute_engine.Credentials()
    if not credentials.valid:
        credentials.refresh(Request())
    return credentials

def send_post_request(url, data):
    credentials = get_credentials()
    headers = {
        'Authorization': 'Bearer ' + credentials.token,
        'Content-Type': 'application/json'
    }
    response = requests.post(url, headers=headers, json=data)
    return response

url = 'https://example.com/api/endpoint'
data = {
    'key1': 'value1',
    'key2': 'value2'
}
response = send_post_request(url, data)