foo

import openpyxl
import re
from datetime import date

workbook = openpyxl.Workbook()
today = date.today()
date_stamp = today.strftime("%Y-%m-%d")
filename = f"neue_datei_{date_stamp}.xlsx"
sheet = workbook.active

with open('ErrorStack.txt', 'r') as file:
    text = file.read()

pattern = r"((.*?Name:\s{0,1}(.*?)\s).*?\-{5,})"

matches = re.findall(pattern, text, re.DOTALL)

for match in matches:
    sheet_name = match[2]
    sheet = workbook.create_sheet(title=sheet_name)

    for row in match[0].split('\n'):
        sheet.append(row.split(','))

workbook.remove(workbook['Sheet'])
workbook.save(filename)