Pycharm: “unresolved reference” error on the IDE when opening a working project

Question

Intro

I have a Python project on a git repository. Everything works ok for most of the team members, we can sync the code and edit it without any pr

Answer 1

I faced similar issue with pyspark ( spark 2.1 ) & luigi.

Failed tries:

1. Setting PYTHONPATH environment variable
2. Invalidate cache & restart pycharm
3. Mark directory as Source Root

Unresolved reference pyspark could be fixed by adding the spark's python directory as Content Root in the project, but running the project as luigi task gave the same error.

Successfull steps

• Create an empty __init__.py file in the project

• Include following lines of code at the top of script

  ...
  import sys
  
  sys.path.append("/path/to/spark/python")
  
  sys.path.append("/path/to/spark/python/lib")
  
  ...
  // import pyspark files after above mentioned lines
  

and the Unresolved reference error issue was fixed both in pycharm & luigi task.