according to chatgpt:
These are some of the challenges users run into:
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Yahoo changed parts of its site / API / encryption
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Yahoo Finance’s official data API was shut down years ago. yfinance works around that by scraping web-pages. Stack Overflow+2Rana Roussi+2
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But Yahoo sometimes changes how data is encrypted or presented, so yfinance may break or partially lose functionality until it’s updated. Quantra+1
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Rate-limiting, requests blocked, missing data
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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
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Also, many users report “Too many requests”, being rate-limited, or certain ticker data failing. Reddit+2Reddit+2
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Dependence on Yahoo’s public site
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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.
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我自己因为以前没用过 Python， 我是自动从Yahoo history 网页抓取HTML， 然后取出其中的数据，刚开始半年一切正常，后来发现有时Yahoo 禁止自动抓取，后来干脆用收费的数据，eodhd的daily only 数据，每年约200美元，用起来蛮好，也没太多限制。
