How to run locust with multiple test files

Write tests in different files. Ensure the classes in each of these files are named differently.

import the classes from all different files into a locustfile.py ( it can have any name and need not be locustfile.py )

example.

testfile1.py

from locust import HttpUser, task, between, tag

class WebTests1(HttpUser):
    wait_time = between(0,0.1)
    def on_start(self):
        # on_start is called when a Locust start before any task is scheduled.
        pass

    def on_stop(self):
        # on_stop is called when the TaskSet is stopping
        pass


    @task(1)
    def testaURL1(self):
        response = self.client.post("/api/test/url1",
                                name="test url",
                                data="some json data",
                                headers="headers")

testfile2.py

from locust import HttpUser, task, between, tag

class WebTests2(HttpUser):
    wait_time = between(0,0.1)
    def on_start(self):
        # on_start is called when a Locust start before any task is scheduled.
        pass

    def on_stop(self):
        # on_stop is called when the TaskSet is stopping
        pass


    @task(1)
    def testaURL2(2self):
        response = self.client.post("/api/test/url2",
                                    name="test url",
                                    data="some json data",
                                    headers="headers")

locustfile.py

 from testfile1 import WebTests1
 from testfile2 import WebTests2

Save all the files in the same directory and run cmd locust or locust -f locustfile.py

Its recommend that you follow Python best practices for structuring your test code. Ref : https://docs.locust.io/en/stable/writing-a-locustfile.html#how-to-structure-your-test-code