aider: Added GitHub Actions workflow for running Python tests on push and pull request to the main branch.

# Context:
USER: how can i run my tests in ci on github?
ASSISTANT: To run your tests in a CI environment on GitHub, you can use GitHub Actions. Here's a step-by-step guide to set up a basic Python testing workflow:

1. Create a new directory named `.github` in the root of your repository if it doesn't exist.
2. Inside the `.github` directory, create another directory named `workflows`.
3. Create a new file named `python-tests.yml` inside the `workflows` directory.

Now, add the following content to the `python-tests.yml` file:

```yaml
.github/workflows/python-tests.yml
<<<<<<< ORIGINAL
=======
name: Python Tests

on:
  push:
    branches:
      - main
  pull_request:
    branches:
      - main

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: [3.6, 3.7, 3.8, 3.9]

    steps:
    - name: Check out repository
      uses: actions/checkout@v2

    - name: Set up Python ${{ matrix.python-version }}
      uses: actions/setup-python@v2
      with:
        python-version: ${{ matrix.python-version }}

    - name: Install dependencies
      run: |
        python -m pip install --upgrade pip
        pip install -r requirements.txt

    - name: Run tests
      run: |
        python -m unittest discover
>>>>>>> UPDATED
```

This workflow will run your tests on every push and pull request to the `main` branch using Python versions 3.6, 3.7, 3.8, and 3.9.

After you've added the `python-tests.yml` file to your repository, GitHub Actions will automatically start running your tests according to the specified workflow.

.github/workflows/python-tests.yml

@@ -0,0 +1,34 @@
+name: Python Tests
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.6, 3.7, 3.8, 3.9]
+
+    steps:
+    - name: Check out repository
+      uses: actions/checkout@v2
+
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v2
+      with:
+        python-version: ${{ matrix.python-version }}
+
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install -r requirements.txt
+
+    - name: Run tests
+      run: |
+        python -m unittest discover