[자동차 경주] 송채원 미션 제출합니다. #7

	name: Check No External Libraries

	on: pull_request

	jobs:
	check-no-external-libs:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v3

	- name: Set up Python
	uses: actions/setup-python@v4
	with:
	python-version: "3.9"

	- name: Ensure no external libraries are imported
	run: \|
	python -c "
	import os
	import ast

	allowed_modules = {'sys', 'os', 'math', 'random', 'datetime', 're'}

	def check_imports(file_path):
	with open(file_path, 'r', encoding='utf-8') as f:
	tree = ast.parse(f.read(), filename=file_path)
	for node in ast.walk(tree):
	if isinstance(node, ast.Import):
	for alias in node.names:
	if alias.name not in allowed_modules:
	raise SystemExit(f'❌ External library detected: {alias.name} in {file_path}')
	elif isinstance(node, ast.ImportFrom):
	if node.module and node.module not in allowed_modules:
	raise SystemExit(f'❌ External library detected: {node.module} in {file_path}')

	for root, _, files in os.walk('src'):
	for file in files:
	if file.endswith('.py'):
	check_imports(os.path.join(root, file))"

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