How to define a test run in github-actions in a specific branch for a python script? - python-3.x

Question

What I have so far is this code:
name: test run
on:
push:
branches:
- V2.0
jobs:
build:
runs-on: [windows-2019]
steps:
- uses: actions/checkout#v2
- name: Set up Python 3.8
uses: actions/setup-python#v2
with:
python-version: 3.8
- name: Install dependencies
run: |
python -m pip install --upgrade pip
pip install pyautogui
pip install opencv-python
pip install numpy
pip install pynput
- name: Test
run: python Cristishor201/my_repo#V2.0/src/pytest.py
And I want to run pytest.py script which is inside my_repo repository, branch V2.0, and in folder src.
Does anyone have an idea how to do this ?
UPDATE 1:
I found this article when he put github.ref environment variable using if statement. The problem with this solution is that it skip the code, and I already filtered the branch in the trigger block.
name: my workflow
on: push
jobs:
test:
runs-on: ubuntu-latest
steps:
- name: Execute tests
run: exit 0
deploy:
runs-on: ubuntu-latest
needs: test
if: github.ref == 'refs/heads/master'
steps:
- name: Deploy app
run: exit 0
I tried using env: instead if: but it didn't work.

Answer 1

Github action actions/checkout#v2 pulls the current branch for which this pipeline was triggered. Since you are specifically telling the pipeline to trigger on V2.0 then you don't need to specify a specific branch to checkout.
Now you are in the current working directory so you can just do the following to properly find your file in the path.
python .\src\pytest.py
Note: this assumes your repo directory structure contains src at the root level of your repo
src
└── pytest.py