If you heavily rely on the Python standard library, then you’re using a lot of Python code that doesn’t call out to C extensions. Peruse the standard library c

If you heavily rely on the Python standard library, then you’re using a lot of Python code that doesn’t call out to C extensions. Peruse the standard library code, if you want to get a sense of it: https://github.com/python/cpython/tree/main/Lib https://github.com/python/cpython/tree/main/Lib So you can expect any code that heavily relies on the standard library to be slower than the Rust equivalent. A purely interpreted language implementation (not JIT’d) like CPython is almost always going to have a 10x-100x slowdown compared to equivalent code in C/C++/Rust/Go or most other compiled/JIT’d languages. So unless your program spends the vast majority of time in C extensions, it will be much slower.