Github Action/Ubuntu: add to PYTHONPATH

On Github Action workflow main.yml, I did the following to add to PYTHONPATH

PWD=$(pwd)
export PYTHONPATH=$PWD/src:$PWD/tests:$PYTHONPATH

I verified the PYTHONPATH using the following command

echo "PYTHONPATH=$PYTHONPATH"

and the output is PYTHONPATH=/home/runner/work/my_api/my_api/src:/home/runner/work/my_api/my_api/tests

I have a module called my_api live under /home/runner/work/my_api/my_api/src

But now I'm getting ModuleNotFoundError: No module named 'my_api' It seems export PYTHONPATH has no impact on the system. Below is the complete workfile YML file.

name: Integration Test Run
env:
    HISTORIC_DATA_FOLDER: /usr/my_api_historic_data
on: [push]
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - name: Install Python 3
        uses: actions/setup-python@v1
        with:
          python-version: 3.6
      - name: Filessytem Setup
        run: |
          pwd
          mkdir my_api_historic_data_test
      - name: Docker Compose
        run: |
          sudo docker-compose -f docker-compose-github.yml build
          sudo docker-compose -f docker-compose-github.yml --verbose --env-file .env up &
      - name: Intgration Test Setup
        run: |
          echo "-----pwd-----"
          pwd

          echo "-----ls-----"
          ls

          echo "-----ls src/-----"
          ls src/

          echo "----PYTHONPATH------"
          PWD=$(pwd)
          export PYTHONPATH=$PWD/src:$PWD/tests:$PYTHONPATH
          echo "PYTHONPATH=$PYTHONPATH"

          echo "-----HISTORIC PATH----"
          export HISTORIC_DATA_FOLDER=/home/runner/work/my_api/my_api/my_api_historic_data_test
          echo "HISTORIC_DATA_FOLDER=$HISTORIC_DATA_FOLDER"
      - name: Integreation Test Run
        run: |
          sleep 30
          pip install requests
          sudo python -m unittest discover