Ultralytics Code Refactor https://ultralytics.com/actions (#13191) #18

	# Ultralytics YOLOv5 🚀, AGPL-3.0 license
	# Automatically merges repository 'main' branch into all open PRs to keep them up-to-date
	# Action runs on updates to main branch so when one PR merges to main all others update

	name: Merge main into PRs

	on:
	workflow_dispatch:
	push:
	branches:
	- main
	- master

	jobs:
	Merge:
	if: github.repository == 'ultralytics/yolov5'
	runs-on: ubuntu-latest
	steps:
	- name: Checkout repository
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- uses: actions/setup-python@v5
	with:
	python-version: "3.11"
	cache: "pip" # caching pip dependencies
	- name: Install requirements
	run: \|
	pip install pygithub
	- name: Merge main into PRs
	shell: python
	run: \|
	from github import Github
	import os

	# Authenticate with the GitHub Token
	g = Github(os.getenv('GITHUB_TOKEN'))

	# Get the repository dynamically
	repo = g.get_repo(os.getenv('GITHUB_REPOSITORY'))

	# List all open pull requests
	open_pulls = repo.get_pulls(state='open', sort='created')

	for pr in open_pulls:
	# Compare PR head with main to see if it's behind
	try:
	# Merge main into the PR branch
	success = pr.update_branch()
	assert success, "Branch update failed"
	print(f"Merged 'master' into PR #{pr.number} ({pr.head.ref}) successfully.")
	except Exception as e:
	print(f"Could not merge 'master' into PR #{pr.number} ({pr.head.ref}): {e}")
	env:
	GITHUB_TOKEN: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
	GITHUB_REPOSITORY: ${{ github.repository }}

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