Python 3.15 released with lazy imports, frozendict, and UTF-8 default

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Python version 3.15 was released on October 9, 2026, after a one-week delay to fix last-minute bugs. Its key features include a new 'lazy' keyword to defer module loading until first use, potentially speeding up application startup. The release also introduces a built-in 'frozendict' type for creating immutable dictionaries. Furthermore, UTF-8 is now the default text encoding for file operations across all operating systems.

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