python formatting configuration

.flake8

@@ -0,0 +1,5 @@
+[flake8]
+exclude = .git,.history,.github,config,docs,lib,scripts,src,test
+ignore = E401,E203,W503,C901,E501,E722,E302,E303,E306,E741,F841,W605,E721
+
+max-complexity=10 

pyproject.toml

@@ -0,0 +1,13 @@
+[tool.black]
+line-length = 80
+include = '\.pyi?$'
+exclude = '''
+(
+      \.github/
+    | \.history/
+    | config/
+    | docs/
+    | lib/
+    | src/
+)
+''' 

scripts/python-format.sh

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+#!/bin/bash
+# Format python files passed as arguments, or format dirty and uncached files.
+# If GIT_COMMIT environment variable is set to a reference, format the files
+# affected by this commit only.
+# If AMEND is set, amend the HEAD commit.
+
+set -e
+
+if [ "$#" -eq 0 ]; then
+    if [ -z "$GIT_COMMIT" ]; then
+        # Take dirty and cached files
+        FILES=$(git diff-index HEAD -r --name-only)
+    else
+        # Take modified files by a commit (eg. for tree-filter)
+        FILES=$(git diff-tree --no-commit-id --name-only -r --diff-filter=AM "$GIT_COMMIT")
+    fi
+    readarray -t PYFILES < <(echo "$FILES" | grep '\.py$' || true)
+else
+    PYFILES=("$@")
+fi
+
+if [ ${#PYFILES[@]} -eq 0 ]; then
+    exit 0
+fi
+
+set +e # Formatters are allowed to fail
+
+black $BLACK_ARGS "${PYFILES[@]}"
+autoflake --in-place "${PYFILES[@]}"
+autopep8 --in-place -a -a "${PYFILES[@]}"
+black $BLACK_ARGS "${PYFILES[@]}"
+
+if [ "$AMEND" ]; then
+    git add -u "${PYFILES[@]}"
+    git commit --amend --no-edit -q --allow-empty
+fi

scripts/requirements_dev.txt

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+# This file describes the Python virtualenv package requirements for
+# klipper CI checks and local development.
+black==22.6.0
+flake8==5.0.4
+autopep8==1.7.0
+autoflake==1.4
+