Fix runners

.github/workflows/black.yml

@@ -0,0 +1,11 @@
+name: python-black
+on: [push, pull_request]
+jobs:
+  linter_name:
+    name: runner / black formatter
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: rickstaa/action-black@v1
+        with:
+          black_args: ". --check"

.github/workflows/cocotb.yml

@@ -0,0 +1,17 @@
+name: cocotb
+on: [push, pull_request]
+jobs:
+  cocotb-container:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Run pytest in container
+        uses: addnab/docker-run-action@v3
+        with:
+          image: ghcr.io/builderdev212/cocotb-runner:latest
+          options: -v ${{ github.workspace }}:/usr/src/verilogbits
+          run: |
+            . .venv/bin/activate && /bin/bash
+            cd verilogbits
+            pytest

problems/getting-started/output-zero/tb/constant_zero.py

@@ -21,4 +21,6 @@ def get_signals(self):
 
     async def zero_check(self):
         if int(self.zero.value) != 0:
-            raise DataError(f"Output should always be 0, got {self.zero.value} instead.")
+            raise DataError(
+                f"Output should always be 0, got {self.zero.value} instead."
+            )