CATL Sodium Battery Reportedly Reaches Cost Parity with LFP in 2026

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CATL, the Chinese battery maker, is reported to have brought its sodium-ion battery to cost parity with lithium iron phosphate (LFP) batteries in 2026. The reporting cites a rated lifespan of 15,000 charge cycles and an operating life of around 30 years. The source material is a short Hacker News link post with limited detail, so the underlying claims could not be independently verified from the item alone. Sodium-ion chemistry is seen as a potential lower-cost, lithium-free alternative for energy storage. The development was shared on Hacker News, where it drew modest attention.

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Comparer deux versions d'un contrat PDF mot à mot avec Python

Un PDF ne conserve pas d'historique des modifications, ce qui oblige à comparer directement les deux fichiers pour repérer les changements. L'article examine trois méthodes : comparaison des pages rendues pixel par pixel, comparaison du texte extrait ligne par ligne, et comparaison mot par mot. Sur une paire de contrats de test, le diff mot par mot identifie les mêmes cinq modifications même lorsque le texte est recomposé avec une autre mise en page, contrairement aux deux autres méthodes. L'auteur présente un script Python d'environ 120 lignes utilisant PyMuPDF et difflib, qui récupère les coordonnées de chaque mot modifié et réécrit les changements sous forme de commentaires dans le PDF. Il indique aussi qu'un logiciel de bureau, PDF Editor d'osFoundry, applique la même logique de comparaison mot par mot.

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

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ProgrammingDEV Community ·

PostgreSQL's SET SESSION AUTHORIZATION alters both session and current user identities

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