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.

A set of the best bike lights will help you be seen when cycling at night, when visibility is poor and in bad weather – and, of course, on unlit roads, they'll light your way reliably. We have tested ...

Tesco is considering making a change to its Clubcard loyalty scheme, plus the hunt is on for a EuroMillions winner who has just hours to claim their prize. Read that, our latest Buy Like a Pro feature ...