使用unittest框架进行接口测试
直接上代码吧，就是为了能添加一个断言

import  requests
import unittest

class Test(unittest.TestCase):
    def setUp(self):
        print("开始")

    def tearDown(self):
        print("结束")

    def test01(self):
        #定义变量
        url = "http://web.juhe.cn:8080/environment/water/river"
        para = {"river": "长江流域", "key": "5877d742cc7ebb0d1d9f65c88329cdf4"}
        r=requests.get(url,para)
        res=r.json()
        print(res)
        #断言
        self.assertEqual(res["reason"],"SUCCESSED!")

if __name__ == '__main__':
    unittest.main()

运行结果：
Process finished with exit code 0
开始

Ran 1 test in 0.302s

{‘resultcode’: ‘200’, ‘reason’: ‘SUCCESSED!’
OK
结束