Add script to update last modified date in Markdown files

This script updates the last modified date in Markdown files that have been changed in the last commit. It also adds and commits the changes automatically.

Author: brown9804

.github/update_date.py

@@ -0,0 +1,49 @@
+import os
+import subprocess
+from datetime import datetime, timezone
+
+# Get the list of modified files
+result = subprocess.run(['git', 'diff', '--name-only', 'HEAD~1'], stdout=subprocess.PIPE)
+modified_files = result.stdout.decode('utf-8').split()
+
+# Debugging: Print the list of modified files
+print("Modified files:", modified_files)
+
+# Filter for Markdown files
+modified_md_files = [f for f in modified_files if f.endswith('.md')]
+
+# Debugging: Print the list of modified Markdown files
+print("Modified Markdown files:", modified_md_files)
+
+# Current date
+current_date = datetime.now(timezone.utc).strftime('%Y-%m-%d')
+
+# Function to update the last modified date in a file
+def update_date_in_file(file_path):
+    with open(file_path, 'r') as file:
+        lines = file.readlines()
+
+    updated = False
+    with open(file_path, 'w') as file:
+        for line in lines:
+            if line.startswith('Last updated:'):
+                file.write(f'Last updated: {current_date}\n')
+                updated = True
+            else:
+                file.write(line)
+        if not updated:
+            file.write(f'\nLast updated: {current_date}\n')
+
+# Check if there are any modified Markdown files
+if not modified_md_files:
+    print("No modified Markdown files found.")
+    exit(0)
+
+# Update the date in each modified Markdown file
+for file_path in modified_md_files:
+    print(f"Updating file: {file_path}")  # Debugging: Print the file being updated
+    update_date_in_file(file_path)
+
+# Add and commit changes
+subprocess.run(['git', 'add', '-A'])
+subprocess.run(['git', 'commit', '-m', 'Update last modified date in Markdown files'])