add header for download

download2markdown - one.py

@@ -5,14 +5,14 @@ from selenium.webdriver.common.by import By
 from selenium.webdriver.support.ui import WebDriverWait
 from selenium.webdriver.support import expected_conditions as EC
 from selenium.webdriver.common.action_chains import ActionChains
-import random
-import time
+#import random
+#import time
 from bs4 import BeautifulSoup
 import os
 import re
 import html2text
 import requests
-import base64
+#import base64
 
 # 自定义 HTML 转换器类，继承自 html2text.HTML2Text
 class CustomHTML2Text(html2text.HTML2Text):