Learn how Python's dictionary data structure works as a powerful and versatile way to store and retrieve objects and data in your applications.

For most diesel-powered engines, DEF is vital so the vehicle performs at its best. Here's what it is exactly and what the acronym stands for.

Quick LinksSet Up Your Development EnvironmentWrite Your First Python ProgramWrite Comments in Your CodeStore Data in ...

DEF stands for diesel exhaust fluid, and it is mandatory for all semi-trucks to use it in the United States. Here's why and what exactly it does.

Free Speech Defamation Lawsuit Against Def Con Cybersecurity Conference Dismissed " [I]t is irrelevant that Defendant Def Con did not know at the time the Transparency Reports were published ...

Vivian Campbell played his first Def Leppard show since receiving a bone marrow transplant in May 2025.

Def Leppard Guitarist Vivian Campbell Is 'Completely in Remission' After 12-Year Cancer Struggle "I'm a hundred percent clean," said the musician, who was first diagnosed with Hodgkin lymphoma in 2013 ...

Def Leppard and Journey have announced they’re co-headlining a stadium tour. They last teamed up on a 2018 joint tour. The latest tour will see the groups tour in North America in summer 2024.

Def Leppard x Journey x Steve Miller Band is the tour we needed in 2024: hit-filled setlists for the ages. Here's what their Phoenix concert was like.

The Def Leppard drummer described how a 1984 car crash he "absolutely" left him more prepared to cope with the recent attack.

Before Def Leppard released their 1980 debut album, On Through the Night, the songs were written while the band members were working day jobs and rehearsing at night.