Python has a way to convert one type of data to another. For example, turning a number into a string to print it, or converting user input (which is always a string) into an integer for calculations.

Modifying a List While Iterating Modifying a Python list while you're looping through it might sound like a clever shortcut, but it's a classic Python gotcha! This sneaky mistake can lead to ...

In the above example, the add_2 function uses a loop to simulate some expensive computation, which pushes its tottime score to the top.