import os

with open('index.html', 'r', encoding='utf-8') as f:
    content = f.read()

target = '<script src="ui-news.js"></script>'
inject = '<script src="ui-news.js"></script>\n    <script src="meydan.js"></script>'

if '<script src="meydan.js"></script>' not in content:
    content = content.replace(target, inject)
    with open('index.html', 'w', encoding='utf-8') as f:
        f.write(content)
    print('EKLENDI')
else:
    print('VAR')