Why Are Python Dictionary Lookups Slow With Large Datasets? - Python Code School

Replying to @MohAy Why is Python slower than compiled languages like C and Rust, and why do hyperscalers like Google and Meta avoid it for large-scale data workloads? Python has performance limits like interpreter execution, bytecode overhead, dynamic typing, heavy object allocation, and the Global Interpreter Lock (GIL), which prevent parallel CPU execution and make Python unsuitable for CPU-bound, latency-sensitive, and high-throughput systems. C and Rust on the other hand compile to native ma