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batch = {k: v.to(device) for k, v in batch.items()}
，更多细节参见PG官网
When an attacker compromises a maintainer’s credentials or takes over a dormant package, they publish a malicious version and wait for automated tooling to pull it into thousands of projects before anyone notices. William Woodruff made the case for dependency cooldowns in November 2025, then followed up with a redux a month later: don’t install a package version until it’s been on the registry for some minimum period, giving the community and security vendors time to flag problems before your build pulls them in. Of the ten supply chain attacks he examined, eight had windows of opportunity under a week, so even a modest cooldown of seven days would have blocked most of them from reaching end users.
The chief executive of the Australian Curriculum, Assessment and Reporting Authority (Acara), Stephen Gniel, said the technical issue, identified at 9.20am, stopped some students from logging on to the online platform for their writing assessments.