我目前需要制作一个基于网络的系统，可以上传包含 URL 列表的 CSV 文件。上传后，系统将逐行读取 URL，并将用于下一步抓取。这里，抓取需要先登录网站再抓取。我已经有了登录网站的源代码。但是，问题是我想将名为“upload_page.html”的html页面与名为“upload_csv.py”的烧瓶文件连接起来。登录和抓取的源代码应该放在flask文件中的哪里？

upload_page.html

<div class="upload">
            <h2>Upload a CSV file</h2>
                <form action="/upload" method="post" enctype="multipart/form-data">
                 <input type="file" name="file" accept=".csv">
                 <br>
                 <br>
                 <button type="submit">Upload</button>
                </form>
</div>

upload_csv.py

from flask import Flask, request, render_template
import pandas as pd
import requests
from bs4 import BeautifulSoup
import csv
import json
import time
from time import sleep
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
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.chrome.options import Options

app = Flask(__name__)

@app.route('/')
def index():
    return render_template('upload_page.html')

#Code for Login to the website


@app.route('/upload', methods=['POST'])
def upload():
    # Read the uploaded file
    csv_file = request.files['file']
    # Load the CSV data into a DataFrameSS
    df = pd.read_csv(csv_file)
    final_data = []
    # Loop over the rows in the DataFrame and scrape each link
    for index, row in df.iterrows():
        link = row['Link']
        response = requests.get(link)
        soup = BeautifulSoup(response.content, 'html.parser')
        start = time.time()
        # will be used in the while loop
        initialScroll = 0
        finalScroll = 1000

        while True:
            driver.execute_script(f"window.scrollTo({initialScroll},{finalScroll})")
            # this command scrolls the window starting from the pixel value stored in the initialScroll
            # variable to the pixel value stored at the finalScroll variable
            initialScroll = finalScroll
            finalScroll += 1000

            # we will stop the script for 3 seconds so that the data can load
            time.sleep(2)
            end = time.time()
            # We will scroll for 20 seconds.
            if round(end - start) > 20:
                break

        src = driver.page_source
        soup = BeautifulSoup(driver.page_source, 'html.parser')
        # print(soup.prettify())

        #Code to do scrape the website

    return render_template('index.html', message='Scraped all data')


if __name__ == '__main__':
    app.run(debug=True)

我的登录和抓取代码是否位于正确的位置？但是，编码不起作用，在我单击上传按钮后，它没有被处理