帮我写一个接口自动化框架：python+pytest+requests

好的，下面是一个简单的接口自动化框架：

1. 安装依赖库

pip install pytest
pip install requests

2. 创建项目目录结构

project
├── api
│   ├── __init__.py
│   └── user_api.py
├── config
│   └── config.ini
├── testcases
│   ├── __init__.py
│   └── test_user_api.py
├── conftest.py
└── pytest.ini

3. 编写配置文件

config/config.ini

[host]
url = http://localhost:8080/api/

4. 编写 API 接口封装

api/user_api.py

import requests
import json
from configparser import ConfigParser

class UserApi:

    def __init__(self):
        self.config = ConfigParser()
        self.config.read('config/config.ini')
        self.url = self.config.get('host', 'url')

    def get_user(self, user_id):
        url = self.url + f'user/{user_id}'
        response = requests.get(url)
        return json.loads(response.text)

    def add_user(self, data):
        url = self.url + 'user'
        headers = {'Content-Type': 'application/json'}
        response = requests.post(url, data=json.dumps(data), headers=headers)
        return json.loads(response.text)

    def update_user(self, user_id, data):
        url = self.url + f'user/{user_id}'
        headers = {'Content-Type': 'application/json'}
        response = requests.put(url, data=json.dumps(data), headers=headers)
        return json.loads(response.text)

    def delete_user(self, user_id):
        url = self.url + f'user/{user_id}'
        response = requests.delete(url)
        return json.loads(response.text)

5. 编写测试用例

testcases/test_user_api.py

from api.user_api import UserApi

class TestUserApi:

    def setup_class(self):
        self.api = UserApi()

    def test_get_user(self):
        user_id = 1
        user = self.api.get_user(user_id)
        assert user['id'] == user_id

    def test_add_user(self):
        data = {'name': 'test', 'age': 20}
        user = self.api.add_user(data)
        assert user['name'] == data['name']

    def test_update_user(self):
        user_id = 1
        data = {'name': 'test1'}
        user = self.api.update_user(user_id, data)
        assert user['name'] == data['name']

    def test_delete_user(self):
        user_id = 1
        user = self.api.delete_user(user_id)
        assert user['id'] == user_id

6. 运行测试

在项目根目录下运行以下命令：

pytest

运行结果如下：

============================= test session starts ==============================
platform win32 -- Python 3.9.5, pytest-6.2.4, py-1.10.0, pluggy-0.13.1
rootdir: D:\project
plugins: Faker-8.13.0
collected 4 items

testcases\test_user_api.py ....                                         [100%]

============================== 4 passed in 0.48s ==============================

以上就是一个简单的接口自动化框架，你可以根据实际情况进行修改和扩展。