Core workflow and worker quickstart

Prerequisites: Python 3.10+, pip install conductor-python, and a reachable Conductor server from server setup.

Run the maintained example from its directory so its sibling workflow module is importable:

cd examples/helloworld
python helloworld.py

Expected result: the workflow completes and prints workflow result: Hello World. The example registers its workflow, starts a local worker, executes the workflow, and stops the worker. If the task stays scheduled, verify that the worker is polling the exact task type. Continue with workers or workflows.