This python logo has a ring attached to it so you can use it as a keychain, or necklace

If you want to use it as a keychain, simply attach it to a metal key ring.

If you want to turn it into a necklace, i recommend using a simple thin piece of yarn/rope, hanging a safety pin from it, and hooking the safety pin into the 3d print to wear it and easily change it with one of my other keychain/necklaces