import yfinance as yf
import sys

for line in open('C:\\Users\\stant\\OneDrive\\Documents\\daxandpython\\tickers.txt'):
    tkr=yf.Ticker(line.strip("\n\r"))
    with open('C:\\Users\\stant\\OneDrive\\Documents\\daxandpython\\yfinance\\'+line.strip("\n\r") +'.txt', 'w') as sys.stdout:
         tkr.history(period="max")

import yfinance as yf
import pandas as pd
#import sys
from datetime import date
today = date.today()
data = None
for line in open('C:\\Users\\stant\\OneDrive\\Documents\\daxandpython\\tickers.txt'):
    ticker=yf.Ticker(line.strip("\n\r"))
    x = yf.download(ticker, start="2017-01-01", end=today, progress=False).round(2)
    #x["Stock"]=ticker
    x.insert(0, "Ticker", ticker)
    if data is None:
        data = x
    else:
        data = pd.concat((data, x))
    data = data.sort_index()

Error:
Traceback (most recent call last):
  File "<stdin>", line 3, in <module>
  File "C:\Users\stant\AppData\Local\Programs\Python\Python311\Lib\site-packages\yfinance\multi.py", line 107, in download
    tickers, (list, set, tuple)) else tickers.replace(',', ' ').split()
                                      ^^^^^^^^^^^^^^^
AttributeError: 'Ticker' object has no attribute 'replace'