add PR-size-label tools

.github/workflows/label_pr_size.yml

@@ -0,0 +1,27 @@
+name: Label PR size
+
+on:
+  pull_request:
+    types: [opened, synchronize]
+
+jobs:
+  label_pr:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '3.x'
+
+    - name: Install Dependencies
+      run: pip install PyGithub
+
+    - name: Run Script
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GITHUB_REPOSITORY: ${{ github.repository }}
+        PULL_REQUEST_NUMBER: ${{ github.event.pull_request.number }}
+      run: python .github/workflows/size_label.py

.github/workflows/size_label.py

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+# -*- coding: utf-8 -*-
+"""
+Created on Fri Jan 19 14:21:11 2024
+
+@author: Fan-Lin
+"""
+
+import os
+from github import Github
+
+# 获取环境变量
+TOKEN = os.environ['GITHUB_TOKEN']
+REPO_NAME = os.environ['GITHUB_REPOSITORY']
+PR_NUMBER = os.environ['PULL_REQUEST_NUMBER']
+
+# 初始化Github对象
+g = Github(TOKEN)
+repo = g.get_repo(REPO_NAME)
+pr = repo.get_pull(int(PR_NUMBER))
+
+# 获取PR的更改行数
+additions = pr.additions
+deletions = pr.deletions
+total_changes = additions + deletions
+
+# 根据更改行数设置标签
+label = ''
+if total_changes <= 9:
+    label = 'size/XS'
+elif 10 <= total_changes <= 29:
+    label = 'size/S'
+elif 30 <= total_changes <= 99:
+    label = 'size/M'
+elif 100 <= total_changes <= 499:
+    label = 'size/L'
+elif 500 <= total_changes <= 999:
+    label = 'size/XL'
+else:
+    label = 'size/XXL'
+
+# 设置标签
+pr.set_labels(label)