formatting workflow

.github/workflows/python-package.yml

@@ -0,0 +1,11 @@
+name: black-action
+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: "-l 119 ."

src/pytreegrav/bruteforce.py

@@ -26,7 +26,7 @@ def PotentialTarget_bruteforce(
     for i in prange(x_target.shape[0]):
         for j in range(x_source.shape[ 0]):
             for k in range(3):  
-                dx[k] = x_target [i, k] - x_source[j, k]
+                dx[k] = x_target [i, k] - x_source[j, k] 
             r = sqrt(dx[0] * dx[0] + dx[1] * dx[1] + dx[2] * dx[2])
 
             h = max(softening_source[j], softening_target[i])