Upgrade 0.2.47 to 0.2.48 caused me an issue as if api are returning data frame instead of series

[MarcoOvidi]

Describe bug

Hello,

in my cod I did: df = yfinance.download(titolo, start=start_date, end=None, progress=False)

that inversion 0.2.47 the object df['Close] was a series, now from version 0.2.48 seems that df['Close] is returning a data frame.

Do you know why and how I can solve ? Is an issue or something changed ?

Br
Marco

Simple code that reproduces your problem

with x.x.47

df = yfinance.download(titolo, start=start_date, end=None, progress=False)
type(df['Close]') is a series

with x.x.48

df = yfinance.download(titolo, start=start_date, end=None, progress=False)
type(df['Close]') is a dataframe

Debug log

with 0.2.47:

EBUG Entering download()
DEBUG Disabling multithreading because DEBUG logging enabled
DEBUG Entering history()
DEBUG Entering history()
DEBUG 1AGS.MI: Yahoo GET parameters: {'period1': '2016-09-08 00:00:00+02:00', 'period2': '2024-11-25 19:46:33+01:00', 'interval': '1d', 'includePrePost': False, 'events': 'div,splits,capitalGains'}
DEBUG Entering get()
DEBUG Entering _make_request()
DEBUG url=https://query2.finance.yahoo.com/v8/finance/chart/1AGS.MI
DEBUG params={'period1': 1473285600, 'period2': 1732560393, 'interval': '1d', 'includePrePost': False, 'events': 'div,splits,capitalGains'}
DEBUG Entering _get_cookie_and_crumb()
DEBUG cookie_mode = 'basic'
DEBUG Entering _get_cookie_and_crumb_basic()
DEBUG loaded persistent cookie
DEBUG reusing cookie
DEBUG crumb = '9A50X2zLXJa'
DEBUG Exiting _get_cookie_and_crumb_basic()
DEBUG Exiting _get_cookie_and_crumb()
DEBUG response code=200
DEBUG Exiting _make_request()
DEBUG Exiting get()
DEBUG 1AGS.MI: yfinance received OHLC data: 2016-09-08 07:00:00 -> 2024-11-25 16:26:05
DEBUG 1AGS.MI: OHLC after cleaning: 2016-09-08 09:00:00+02:00 -> 2024-11-25 17:26:05+01:00
DEBUG 1AGS.MI: OHLC after combining events: 2016-09-08 00:00:00+02:00 -> 2024-11-25 00:00:00+01:00
DEBUG 1AGS.MI: yfinance returning OHLC: 2016-09-08 00:00:00+02:00 -> 2024-11-25 00:00:00+01:00
DEBUG Exiting history()
DEBUG Exiting history()
DEBUG Exiting download()

with 0.2.48:

DEBUG Entering history()
DEBUG 1AGS.MI: Yahoo GET parameters: {'period1': '2016-09-08 00:00:00+02:00', 'period2': '2024-11-25 19:47:09+01:00', 'interval': '1d', 'includePrePost': False, 'events': 'div,splits,capitalGains'}
DEBUG Entering get()
DEBUG Entering _make_request()
DEBUG url=https://query2.finance.yahoo.com/v8/finance/chart/1AGS.MI
DEBUG params={'period1': 1473285600, 'period2': 1732560429, 'interval': '1d', 'includePrePost': False, 'events': 'div,splits,capitalGains'}
DEBUG Entering _get_cookie_and_crumb()
DEBUG cookie_mode = 'basic'
DEBUG Entering _get_cookie_and_crumb_basic()
DEBUG loaded persistent cookie
DEBUG reusing cookie
DEBUG crumb = '9A50X2zLXJa'
DEBUG Exiting _get_cookie_and_crumb_basic()
DEBUG Exiting _get_cookie_and_crumb()
DEBUG response code=200
DEBUG Exiting _make_request()
DEBUG Exiting get()
DEBUG 1AGS.MI: yfinance received OHLC data: 2016-09-08 07:00:00 -> 2024-11-25 16:26:05
DEBUG 1AGS.MI: OHLC after cleaning: 2016-09-08 09:00:00+02:00 -> 2024-11-25 17:26:05+01:00
DEBUG 1AGS.MI: OHLC after combining events: 2016-09-08 00:00:00+02:00 -> 2024-11-25 00:00:00+01:00
DEBUG 1AGS.MI: yfinance returning OHLC: 2016-09-08 00:00:00+02:00 -> 2024-11-25 00:00:00+01:00
DEBUG Exiting history()
DEBUG Exiting history()
DEBUG Exiting download()

Bad data proof

No response

yfinance version

0.2.47

Python version

No response

Operating system

No response

[MarcoOvidi]

attrs==24.2.0
beautifulsoup4==4.12.3
certifi==2024.8.30
charset-normalizer==3.4.0
frozendict==2.4.6
h11==0.14.0
html5lib==1.1
idna==3.10
lxml==5.3.0
multitasking==0.0.11
numpy==2.1.3
outcome==1.3.0.post0
packaging==24.2
pandas==2.2.3
peewee==3.17.8
platformdirs==4.3.6
PySocks==1.7.1
python-dateutil==2.9.0.post0
python-dotenv==1.0.1
pytz==2024.2
requests==2.32.3
selenium==4.27.0
setuptools==75.6.0
six==1.16.0
sniffio==1.3.1
sortedcontainers==2.4.0
soupsieve==2.6
ta==0.11.0
tabulate==0.9.0
trio==0.27.0
trio-websocket==0.11.1
typing_extensions==4.12.2
tzdata==2024.2
urllib3==2.2.3
webdriver-manager==4.0.2
webencodings==0.5.1
websocket-client==1.8.0
wsproto==1.2.0
yfinance==0.2.47

[dhruvan2006]

Duplicate of #2101 (comment)

Behavior of yf.download() has been changed