python locust 性能测试：locsut参数化-保证并发测试数据唯一性，不循环取数据

from locust import TaskSet, task, HttpLocust
import queue

class UserBehavior(TaskSet):
    @task
    def test_register(self):
        try:
            # get_nowait() 取不到数据直接崩溃；get() 取不到数据会一直等待
            data = self.locust.user_data_queue.get_nowait()  # 取值顺序 'username': 'test0000'、'username': 'test0001'、'username': 'test0002'...
        except queue.Empty:  # 取不到数据时，走这里
            print('account data run out, test ended.')
            exit(0)
        print('register with user: {}, pwd: {}'.format(data['username'], data['password']))
        body = {
            'username': data['username'],
            'password': data['password']
        }
        r = self.client.post('/user/signin', data=body).text
        assert r.status_code == 200

class WebsiteUser(HttpLocust):
    host = 'https://passport.cnblogs.com'
    task_set = UserBehavior
    user_data_queue = queue.Queue(maxsize=100)  # 创建队列，先进先出
    for index in range(100):
        data = {
            "username": "test%04d" % index,
            "password": "pwd%04d" % index,
            "email": "test%04d@debugtalk.test" % index,
            "phone": "186%08d" % index,
        }
        user_data_queue.put_nowait(data)  # 循环加入队列<全部>,循环完，继续执行
    min_wait = 1000
    max_wait = 3000

参考：http://debugtalk.com/post/head-first-locust-advanced-script/