有谁用过Python调用云账户的REST API接口吗？

我调过不少云服务的API，Python里用requests库最直接。给你个通用模板：

import requests
import json
from datetime import datetime
import hashlib
import hmac

class CloudAccountAPI:
    def __init__(self, api_key, api_secret, base_url="https://api.cloudaccount.com/v1"):
        self.api_key = api_key
        self.api_secret = api_secret
        self.base_url = base_url
        self.session = requests.Session()
        
    def _generate_signature(self, params):
        """生成API签名（根据具体云服务调整）"""
        timestamp = str(int(datetime.now().timestamp()))
        param_str = '&'.join([f"{k}={v}" for k, v in sorted(params.items())])
        string_to_sign = f"{timestamp}\n{param_str}"
        signature = hmac.new(
            self.api_secret.encode('utf-8'),
            string_to_sign.encode('utf-8'),
            hashlib.sha256
        ).hexdigest()
        return timestamp, signature
    
    def get_account_info(self):
        """获取账户信息示例"""
        endpoint = f"{self.base_url}/account/info"
        params = {"api_key": self.api_key}
        timestamp, signature = self._generate_signature(params)
        
        headers = {
            "X-API-KEY": self.api_key,
            "X-TIMESTAMP": timestamp,
            "X-SIGNATURE": signature,
            "Content-Type": "application/json"
        }
        
        try:
            response = self.session.get(endpoint, headers=headers, params=params, timeout=10)
            response.raise_for_status()
            return response.json()
        except requests.exceptions.RequestException as e:
            print(f"请求失败: {e}")
            if hasattr(e.response, 'text'):
                print(f"错误详情: {e.response.text}")
            return None
    
    def create_transaction(self, amount, currency="USD"):
        """创建交易示例"""
        endpoint = f"{self.base_url}/transactions"
        data = {
            "amount": amount,
            "currency": currency,
            "timestamp": int(datetime.now().timestamp())
        }
        
        _, signature = self._generate_signature(data)
        headers = {
            "X-API-KEY": self.api_key,
            "X-SIGNATURE": signature,
            "Content-Type": "application/json"
        }
        
        response = self.session.post(endpoint, headers=headers, json=data)
        return response.json()

# 使用示例
if __name__ == "__main__":
    # 从环境变量或配置文件中读取密钥
    api = CloudAccountAPI(
        api_key="your_api_key_here",
        api_secret="your_api_secret_here"
    )
    
    # 获取账户信息
    account_info = api.get_account_info()
    if account_info:
        print(f"账户余额: {account_info.get('balance')}")
    
    # 创建交易
    transaction = api.create_transaction(100.50)
    print(f"交易ID: {transaction.get('transaction_id')}")

关键点：

1. 签名机制每家云服务商都不一样，得仔细看文档
2. 一定要处理异常和错误响应
3. 密钥别硬编码在代码里，用环境变量或配置文件
4. 有些API有请求频率限制，可能需要加延时

建议：先看官方文档的认证和签名部分，用Postman调试通了再写代码。