ModuleNotFoundError in Python 3.6 OSX 10.12

I use Python 3.6 installed via Homebrew. There seems to be import issue, I am exactly not sure why as I see tests for Python 3.6 seems to be passing.

$ locust locustfile.py
Traceback (most recent call last):
  File "/usr/local/bin/locust", line 7, in <module>
    from locust.main import main
  File "/usr/local/lib/python3.6/site-packages/locust/__init__.py", line 1, in <module>
    from core import HttpLocust, Locust, TaskSet, task
ModuleNotFoundError: No module named 'core'

Version: locustio ==0.7.5

$ which locust
/usr/local/bin/locust

[cgoldberg]

@chhantyal

I use Python 3.6

The issue you are having is because version 0.7.5 is only compatible with Python 2.7. To get Python 3 support you must install Locust 0.8. As of today (7/21/2017) it has not been officially released… so you have 2 options:

1. install the 0.8a2 pre-release from PyPI: pip install locustio==0.8a2
2. install the latest master branch from the git repository: pip install git+https://github.com/locustio/locust.git

I see tests for Python 3.6 seems to be passing

Python 3.6 tests do pass in current master branch, but you’ll notice the v0.7.5 branch does not test against against Python 3.x: https://travis-ci.org/locustio/locust/builds/135922735

hth

[heyman]

@gkandale

The stacktrace seems to indicate that the error originates from your test scripts, and not from Locust.