Python importing module from another directory

Question

I want to import the module from another directory scripts/driver/scheduler.py to run.py and execute it, but every time I get the following error msg

ModuleNotFoundError: No module named 'scripts'

I added empty init .py files, but it didn't solve the issue

Here are a tree and the code:

.
├── __init__.py
├── pythonmodules
│   ├── module
│   │   └── run.py
│   └── setup
│       └── smthelse
└── scripts
    ├── driver
    │   ├── __init__.py
    │   └── scheduler.py
    └── resources
        └── smthelse

run.py

import argparse
import os.path as op
from scripts.driver.scheduler import scheduler

some lines of code
s = scheduler()

scheduler.py

import re
import sys

class scheduler():
    some code

if __name__ == '__main__':
    s = scheduler()

Could somebody explain why it doesn't work?

Answer 1

Somehow pythonpath was missing. The following export fixed it: export PYTHONPATH=$PYTHONPATH:/home/user/myapp