无法在单个csv文件中将抓取的标题写入四个不同的工作表

import csv
from openpyxl import Workbook

# 读取CSV文件
with open('data.csv', 'r') as file:
    reader = csv.reader(file)
    data = list(reader)

# 分类标题
category1 = []
category2 = []
category3 = []
category4 = []

for row in data:
    title = row[0]  # 假设标题在CSV文件的第一列
    # 根据标题内容或其他规则进行分类
    if condition1:
        category1.append(title)
    elif condition2:
        category2.append(title)
    elif condition3:
        category3.append(title)
    else:
        category4.append(title)

# 创建工作表
workbook = Workbook()
sheet1 = workbook.active
sheet1.title = 'Category 1'
sheet2 = workbook.create_sheet('Category 2')
sheet3 = workbook.create_sheet('Category 3')
sheet4 = workbook.create_sheet('Category 4')

# 写入数据
for i, title in enumerate(category1, start=1):
    sheet1.cell(row=i, column=1, value=title)

for i, title in enumerate(category2, start=1):
    sheet2.cell(row=i, column=1, value=title)

for i, title in enumerate(category3, start=1):
    sheet3.cell(row=i, column=1, value=title)

for i, title in enumerate(category4, start=1):
    sheet4.cell(row=i, column=1, value=title)

# 保存文件
workbook.save('output.xlsx')
workbook.close()