Lots of fixes

.pre-commit-config.yaml

@@ -1,29 +1,48 @@
 repos:
--   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v3.2.0
-    hooks:
-    -   id: trailing-whitespace
-    -   id: end-of-file-fixer
-    -   id: check-yaml
-    -   id: check-added-large-files
-    -   id: fix-encoding-pragma
-    -   id: detect-private-key
-    -   id: check-merge-conflict
-    -   id: check-case-conflict
-    -   id: check-docstring-first
-    -   id: check-builtin-literals
--   repo: https://github.com/psf/black
-    rev: 19.3b0
-    hooks:
-    -   id: black
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v3.4.0
+  hooks:
+    - id: trailing-whitespace
+    - id: end-of-file-fixer
+    - id: check-yaml
+    - id: check-added-large-files
+    - id: detect-private-key
+    - id: check-merge-conflict
+    - id: check-case-conflict
+    - id: check-docstring-first
+    - id: check-builtin-literals
+    - id: double-quote-string-fixer
 
--   repo: https://github.com/pre-commit/mirrors-isort
-    rev: v5.7.0
-    hooks:
-    -   id: isort
+- repo: https://github.com/asottile/setup-cfg-fmt
+  rev: v1.16.0
+  hooks:
+    - id: setup-cfg-fmt
 
--   repo: https://gitlab.com/pycqa/flake8
-    rev: 3.8.1
-    hooks:
-      - id: flake8
-        additional_dependencies: [flake8-bugbear]
+- repo: https://github.com/asottile/add-trailing-comma
+  rev: v2.0.2
+  hooks:
+    - id: add-trailing-comma
+      args: [--py36-plus]
+
+- repo: https://github.com/asottile/pyupgrade
+  rev: v2.7.4
+  hooks:
+    - id: pyupgrade
+      args:
+        - --py3-plus
+
+- repo: https://github.com/pre-commit/mirrors-isort
+  rev: v5.7.0
+  hooks:
+    - id: isort
+
+- repo: https://github.com/psf/black
+  rev: 20.8b1
+  hooks:
+    - id: black
+
+- repo: https://gitlab.com/pycqa/flake8
+  rev: 3.8.4
+  hooks:
+    - id: flake8
+      additional_dependencies: [flake8-bugbear]