adding pre-commit

.pre-commit-config.yaml

@@ -0,0 +1,38 @@
+repos:
+- repo: https://github.com/pre-commit/pre-commit-hooks
+  rev: v2.4.0
+  hooks:
+  - id: trailing-whitespace
+    name: Trim Trailing Whitespace
+    language_version: python3
+  - id: end-of-file-fixer
+    name: File Ending
+    language_version: python3
+  - id: debug-statements
+    name: Debug Statments
+    language_version: python3
+  - id: flake8
+    name: Flake8
+    language_version: python3
+    verbose: true
+  - id: check-yaml
+- repo: https://github.com/asottile/reorder_python_imports
+  rev: v1.8.0
+  hooks:
+  - id: reorder-python-imports
+    name: Reorder Python Imports
+    language_version: python3
+- repo: https://github.com/psf/black
+  rev: 19.10b0
+  hooks:
+  - id: black
+    name: Formate with Black
+    args: [--safe, --quiet, --line-length, "100"]
+    language_version: python3
+    require_serial: true
+- repo: https://github.com/asottile/pyupgrade
+  rev: v1.25.2
+  hooks:
+  - id: pyupgrade
+    name: Python Package Checks
+    language_version: python3