Merge pull request #485 from lsst/tickets/DM-29073

DM-29073: Make ButlerURI immutable

.github/workflows/docstyle.yaml

@@ -0,0 +1,24 @@
+name: lint docstrings
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.8
+
+      - name: Install
+        run: pip install pydocstyle
+
+      - name: Run linter
+        run: pydocstyle python/lsst/daf/butler/core/

python/lsst/daf/butler/core/__init__.py

@@ -1,6 +1,4 @@
-"""
-Core code for butler.
-"""
+"""Core code for butler."""
 
 # Do not export the utility routines from utils and queries.