sloved erros

Author: srikanthbaride

.github/workflows/python-tests.yml

@@ -11,22 +11,19 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        chapter: [ch2_rl_formulation, ch3_bandits]   # add/remove chapters as needed
+        chapter: [ch2_rl_formulation, ch3_bandits]
+
     steps:
-      - name: Checkout
-        uses: actions/checkout@v4
+      - uses: actions/checkout@v4
 
-      - name: Set up Python
-        uses: actions/setup-python@v5
+      - uses: actions/setup-python@v5
         with:
           python-version: "3.10"
 
       - name: Install deps
         run: |
           python -m pip install --upgrade pip
-          # Root requirements (optional)
           if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-          # Chapter-specific requirements (if present)
           if [ -f "${{ matrix.chapter }}/requirements.txt" ]; then \
             pip install -r "${{ matrix.chapter }}/requirements.txt"; \
           fi
@@ -35,5 +32,19 @@ jobs:
       - name: Make repo importable
         run: echo "PYTHONPATH=${GITHUB_WORKSPACE}" >> $GITHUB_ENV
 
+      - name: Check if ${{ matrix.chapter }} has tests
+        id: has_tests
+        run: |
+          if compgen -G "${{ matrix.chapter }}/tests/**/*.py" > /dev/null; then
+            echo "exists=true" >> $GITHUB_OUTPUT
+          else
+            echo "exists=false" >> $GITHUB_OUTPUT
+          fi
+
       - name: Run ${{ matrix.chapter }} tests
+        if: steps.has_tests.outputs.exists == 'true'
         run: pytest -q ${{ matrix.chapter }}/tests
+
+      - name: Note skipped chapter
+        if: steps.has_tests.outputs.exists != 'true'
+        run: echo "No tests found for ${{ matrix.chapter }} — skipping."