优化Python网站访问速度，使用图片压缩、CSS合并等技术提升访问效率。

from PIL import Image

def compress_image(image_path, output_path, quality=80):
    # 打开原始图片文件
    image = Image.open(image_path)
    # 设置压缩质量，值的范围为0-100，默认为80
    image.save(output_path, optimize=True, quality=quality)
    # 关闭图片文件
    image.close()

# 调用示例
compress_image('original.jpg', 'compressed.jpg', quality=50)

from flask import Flask, make_response
from cssmin import cssmin

app = Flask(__name__)

@app.route('/merged.css')
def merge_css():
    # 读取所有的CSS文件
    css_files = ['file1.css', 'file2.css', 'file3.css']
    css_content = ''
    for file in css_files:
        with open(file, 'r') as f:
            css_content += f.read()
    
    # 压缩CSS文件
    merged_css = cssmin(css_content)
    
    # 设置响应头，告诉浏览器文件类型为CSS
    response = make_response(merged_css)
    response.headers['Content-Type'] = 'text/css'
    return response

# 启动Flask应用
if __name__ == '__main__':
    app.run()