Github Action/Ubuntu: add to PYTHONPATH - github-actions

Question

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

Answer 1

As already said in comments, each step runs in it's own shell. You need to make sure your variable is exported properly, so that it's available in all subsequent steps.
echo "PYTHONPATH=$PYTHONPATH" >> $GITHUB_ENV
See docs for more details.