[Error] yfinance 'Index' object has no attribute 'tz_localize'

AttributeError: 'Index' object has no attribute 'tz_localize'

yfinance를 import

!pip install yahoo-finance
import yfinance as yf

!pip install yahoo-finance
import yfinance as yf
!pip install yahoo-finance
import yfinance as yf
Requirement already satisfied: yahoo-finance in c:\users\g4560\anaconda3\lib\site-packages (1.4.0)
Requirement already satisfied: pytz in c:\users\g4560\anaconda3\lib\site-packages (from yahoo-finance) (2021.3)
Requirement already satisfied: simplejson in c:\users\g4560\anaconda3\lib\site-packages (from yahoo-finance) (3.17.6)

Error

df_amzn = yf.download('AMZN', 
           start=  '2018-01-01',
           end='2020-12-31',
           progress=False,  #진행상황 표시 여부 
           auto_adjust = False,  #False로 하면 Adjust 전의 종가와 후의 종가 모두 확인 가능
           actions='inline')
df_amzn

Exception in thread Thread-14:
Traceback (most recent call last):
  File "C:\Users\G4560\anaconda3\lib\threading.py", line 973, in _bootstrap_inner
    self.run()
  File "C:\Users\G4560\anaconda3\lib\threading.py", line 910, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\G4560\anaconda3\lib\site-packages\multitasking\__init__.py", line 104, in _run_via_pool
    return callee(*args, **kwargs)
  File "C:\Users\G4560\anaconda3\lib\site-packages\yfinance\multi.py", line 188, in _download_one_threaded
    data = _download_one(ticker, start, end, auto_adjust, back_adjust,
  File "C:\Users\G4560\anaconda3\lib\site-packages\yfinance\multi.py", line 202, in _download_one
    return Ticker(ticker).history(period=period, interval=interval,
  File "C:\Users\G4560\anaconda3\lib\site-packages\yfinance\base.py", line 295, in history
    df.index = df.index.tz_localize("UTC").tz_convert(
AttributeError: 'Index' object has no attribute 'tz_localize'

해결

버전을 업그레이드하면 된다.

pip install --upgrade yfinance

업그레이드하고 restart해야 적용이 되었음.
cf)

pip install -U yfinance pandas

StackOverflow에서 위와 같은 답변이 있어서 실행시켰으나, 무한로딩만 되어 사용X