pip install pytest

# test_sample.py

# A simple test to check if the sum function works correctly
def test_sum():
    assert sum([1, 2, 3]) == 6, "Sum function did not return the expected result"

name: Python application

# This triggers the workflow on every push or pull request to the main branch
on: [push, pull_request]

jobs:
  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v2

    - name: Set up Python
      uses: actions/setup-python@v2
      with:
        python-version: '3.x'  # Specify the Python version you want to use

    - name: Install dependencies
      run: |
        pip install pytest

    - name: Run tests
      run: |
        pytest

quantities = {"pink": 3, "green": 4}
color = "blue"
if not quantities.get(color):
    print(f"Uh oh! There's no value for {color}")
# -> Uh oh! There's no value for blue

quantities = {"pink": 3, "green": 4, "blue": 0}
color = "blue"
if not quantities.get(color):
    print(f"Uh oh! There's no value for {color}")
# -> Uh oh! There's no value for blue

color = "blue"
if color not in quantities:
    print(f"Uh oh! There's no value for {color}")