problem with yfinance

according to chatgpt:

These are some of the challenges users run into:

1. Yahoo changed parts of its site / API / encryption

   • Yahoo Finance’s official data API was shut down years ago. yfinance works around that by scraping web-pages. Stack Overflow+2Rana Roussi+2

   • But Yahoo sometimes changes how data is encrypted or presented, so yfinance may break or partially lose functionality until it’s updated. Quantra+1

2. Rate-limiting, requests blocked, missing data

   • Some endpoints (or types of data) may be no longer available or harder to access. E.g. fundamental data or historical data may be partially disrupted. Reddit+3Quantra+3Reddit+3

   • Also, many users report “Too many requests”, being rate-limited, or certain ticker data failing. Reddit+2Reddit+2

3. Dependence on Yahoo’s public site

   • Because it scrapes the site (not using an official stable API), any UX changes, HTML structure changes, or Yahoo policy changes (e.g. making some data behind paywalls or stopping CSV/historical downloads) can break parts of yfinance. 

我自己因為以前沒用過 Python， 我是自動從Yahoo history 網頁抓取HTML， 然後取出其中的數據，剛開始半年一切正常，後來發現有時Yahoo 禁止自動抓取，後來幹脆用收費的數據，eodhd的daily only 數據，每年約200美元，用起來蠻好，也沒太多限製。