Question: debugging in pycharm (or other arbitrary IDE)

Hello, so quick question. I have locust installed in a venv on python 3 (locustio==0.8a2). I’ve been building and testing a locust python script, but I’m trying to traverse some complicated json responses. In order to run a locust script, you have to run locust loadtest-file.py

Is it possible to attach a debugger while running a locust script?

[MattF-NSIDC]

Took me a minute to get there (specifically to realize I had to call .run()) so I figured I’d share:

I create a subclass of HttpLocust called WebsiteUser. To execute a single instance from the CLI, I added:

if __name__ == '__main__':
    x = WebsiteUser()
    x.run()

Then run python locustfily.py. If I have a pdb breakpoint in one of my tasks, this triggers the breakpoint. Full example locustfile.py:

from locust import HttpLocust, TaskSet, task

class UserBehavior(TaskSet):
    @task
    def index(self):
        import pdb; pdb.set_trace()
        self.client.get("/")

class WebsiteUser(HttpLocust):
    task_set = UserBehavior 
    host = 'http://google.com'
    min_wait = 1000
    max_wait = 2000

if __name__ == '__main__':
    WebsiteUser().run()

[GabLeRoux]

Here I managed to get Intellij Idea (Similar to PyCharm) to break while locust is running.

I used python remote debug run configuration, followed instructions. In my case, I just used a virtualenv and installed locustio and pydevd directly. 🎉

It should break automatically right under the following line (I think break point is optional):

pydevd.settrace('localhost', port=12345, stdoutToServer=True, stderrToServer=True)

👍