Python -O won’t magically make every script faster, but in the right workloads it’s a free win—here’s how to test it safely.

JIT compiler stack up against PyPy? We ran side-by-side benchmarks to find out, and the answers may surprise you.

President again disparages allies and tells Fox News he is ‘not sure’ Nato would come to US’s defence Donald Trump has again disparaged America’s Nato allies, claiming that troops from allied nations ...