一次重构，让我处理DataFrame条件逻辑的速度提升了4倍。还记得那个周五的下午，我盯着屏幕上这段代码发呆：df["category"] = np.where(df["score"] > 90, "A", np.where(df["score"] ...

2025年11月中旬，上海某科技公司市场部员工小林在工位上收到一封邮件，主题是：“您的包裹已到，请扫码取件”。邮件正文简洁，仅附有一张图片——一个黑白相间的二维码，下方标注“顺丰速运”。 她没多想，掏出手机，打开原生相机对准屏幕。几秒后，手机自动跳转至一个看似顺丰官网的页面，要求输入手机号和验证码以“确认身份”。她照做了。当天下午，她的企业邮箱开始向外群发带有恶意附件的邮件。 IT部门紧急排查发现 ...

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Tired of out-of-memory errors derailing your data analysis? There's a better way to handle huge arrays in Python.

Abstract: Object recognition is the process of recognizing objects based on their characteristics like color, shape, and with the particular occurrence of the object in digital videos and as well as ...

A USA TODAY/Peacock survey reveals that women disproportionately carry the "mental load" of parenting. The survey found 43% of women report feeling burned out or emotionally exhausted from these ...

Beth Skwarecki is Lifehacker’s Senior Health Editor and has been writing about health, fitness, and science here since 2015. Beth was the recipient of the 2017 Carnegie Science Award in science ...

In today’s data-rich environment, business are always looking for a way to capitalize on available data for new insights and increased efficiencies. Given the escalating volumes of data and the ...

Physics and Python stuff. Most of the videos here are either adapted from class lectures or solving physics problems. I really like to use numerical calculations without all the fancy programming ...

Messy, overheated, self-indulgent, divisive, and literally seminal, Metallica’s 1996 album lacked only a colossal 301-song, five-LP, 15-CD, four-DVD box set reissue. “All preconceived and preexisting ...