add pre-commit config

.pre-commit-config.yaml

@@ -0,0 +1,41 @@
+# See https://pre-commit.com for more information
+# See https://pre-commit.com/hooks.html for more hooks
+repos:
+    - repo: https://github.com/pre-commit/pre-commit-hooks
+      rev: v3.4.0
+      hooks:
+          - id: trailing-whitespace
+          - id: end-of-file-fixer
+          - id: check-added-large-files
+          - id: check-case-conflict # Check for files that would conflict in case-insensitive filesystems
+          - id: check-merge-conflict # Check for files that contain merge conflict strings.
+          - id: debug-statements # Check for debugger imports and py37+ `breakpoint()` calls in python source.
+          - id: requirements-txt-fixer # Sorts entries in requirements.txt
+          - id: forbid-new-submodules
+
+    - repo: https://gitlab.com/pycqa/flake8
+      rev: '3.9.0'
+      hooks:
+          - id: flake8
+    - repo: https://github.com/asottile/seed-isort-config
+      rev: v2.2.0
+      hooks:
+          - id: seed-isort-config
+    - repo: https://github.com/pre-commit/mirrors-isort
+      rev: v5.8.0
+      hooks:
+          - id: isort
+    - repo: https://github.com/asottile/blacken-docs
+      rev: v1.10.0
+      hooks:
+          - id: blacken-docs
+            additional_dependencies: [black]
+    - repo: https://github.com/psf/black
+      rev: 20.8b1
+      hooks:
+          - id: black
+    - repo: https://github.com/pre-commit/mirrors-mypy
+      rev: v0.812
+      hooks:
+          - id: mypy
+            exclude: tests/