When talking about tracing in this section, we will refer to something more general that has to do with dealing with the execution of a function that we wish to monitor. This could refer to scenarios in which we want to:

• Actually trace the execution of a function (for example, by logging the lines it executes)
• Monitor some metrics over a function (such as CPU usage or memory footprint)
• Measure the running time of a function
• Log when a function was called, and the parameters that were passed to it

In the next section, we will explore a simple example of a decorator that logs the execution of a function, including its name and the time it took to run.