Update app.py

app.py

@@ -4,6 +4,7 @@ import pandas as pd
 from selenium import webdriver
 from selenium.webdriver.support.ui import WebDriverWait
 from selenium.webdriver.support import expected_conditions as EC
+from selenium.webdriver.common.by import By
 from selenium.common.exceptions import WebDriverException
 from io import BytesIO
 from bs4 import BeautifulSoup