It's really easy to make C++ code that's slower at reading or writing files than Python if you go about it in an innocent way. https://stackoverflow.com/questi

It's really easy to make C++ code that's slower at reading or writing files than Python if you go about it in an innocent way. https://stackoverflow.com/questions/30197068/why-is-my-c-text-file-parsing-script-so-much-slower-than-my-python-script?rq=1 https://stackoverflow.com/questions/30197068/why-is-my-c-tex... https://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python https://stackoverflow.com/questions/9371238/why-is-reading-l... So I wouldn't be at all surprised if you could make the same mistakes in Nim. But of course it would be unfair to claim that that means Nim is slow in general.