엑셀 파일 생성이 안됩니다. ㅠㅠ

from flask import Flask, render_template, request

app = Flask(__name__)



# 크롤링 라이브러리 import
import requests
from bs4 import BeautifulSoup

from openpyxl import Workbook

write_wb = Workbook()
write_ws = write_wb.active




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


@app.route('/result', methods=['POST'])
def result():
    if request.method == 'POST':

        keyword = request.form['input1']
        page = request.form['input2']

        # https://search.daum.net/search?nil_suggest=btn&w=news&DA=SBC&cluster=y&q= + keyword

        daum_list = []

        for i in range(1, int(page) + 1):

            req = requests.get("https://search.daum.net/search?nil_suggest=btn&w=news&DA=SBC&cluster=y&q=" + keyword + "&p=" + page)
            soup = BeautifulSoup(req.text, 'html.parser')

            for i in soup.find_all("a", class_="f_link_b"):
                print(i.text)
                daum_list.append(i.text)

        for i in range(1, len(daum_list) + 1):
            write_ws.cell(i, 1, daum_list[i-1])

        write_wb.save("result.xlsx")

        return render_template("result.html", daum_list = daum_list)


if __name__ == "__main__":
    app.run()

왜 저만 안되는 건지 ? ㅠㅠ