dagster_web  | Stack Trace:
dagster_web  |   File "/usr/local/lib/python3.7/site-packages/dagster/cli/api.py", line 150, in list_repositories_commanddagster_web  |     python_file, module_name, working_directory, attribute
dagster_web  |   File "/usr/local/lib/python3.7/site-packages/dagster/grpc/utils.py", line 20, in get_loadable_targets   
dagster_web  |     else loadable_targets_from_python_file(python_file, working_directory)
dagster_web  |   File "/usr/local/lib/python3.7/site-packages/dagster/cli/workspace/autodiscovery.py", line 11, in loadable_targets_from_python_file
dagster_web  |     loaded_module = load_python_file(python_file, working_directory)
dagster_web  |   File "/usr/local/lib/python3.7/site-packages/dagster/core/code_pointer.py", line 181, in load_python_file
dagster_web  |     raise error
dagster_web  |   File "/usr/local/lib/python3.7/site-packages/dagster/core/code_pointer.py", line 129, in load_python_file
dagster_web  |     module = import_module_from_path(module_name, python_file)
dagster_web  |   File "/usr/local/lib/python3.7/site-packages/dagster/seven/__init__.py", line 116, in import_module_from_path
dagster_web  |     spec.loader.exec_module(module)
dagster_web  |   File "<frozen importlib._bootstrap_external>", line 728, in exec_module
dagster_web  |   File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
dagster_web  |   File "/opt/dagster/dagster_home/hub.py", line 1, in <module>
dagster_web  |     from hello_dagster import *
dagster_web  |