Implementing Django's Templating Language in Rust: Conquering Lifetimes and PyO3
2025-09-03
This article details the challenges encountered while reimplementing Django's templating language in Rust, specifically focusing on handling custom template tags and context. Due to Rust's lifetimes and PyO3 limitations, the author cleverly uses `std::mem::take`, `std::mem::replace`, `Arc`, and `Mutex` to safely pass and modify context data between Rust and Python, ultimately solving context lifecycle management issues during custom tag rendering.
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