Which structure is used to create a loop in Python that continues while a condition is true?

The structure that is used to create a loop in Python that continues while a condition is true is the while loop. The while loop repeatedly executes a block of code as long as a specified condition evaluates to true. This allows for flexible iteration based on dynamic conditions that may change during the execution of the loop. Unlike for loops, which iterate over a sequence or a specific range, the while loop is primarily concerned with the condition and will keep looping until that condition is no longer satisfied.

In the context of Python, a typical while loop structure looks like this:

while condition:

# Code to execute

This structure illustrates that the code inside the loop will keep running as long as "condition" remains true. Such a loop is particularly useful when the number of iterations is not predetermined, allowing for more adaptable control flow in your programs.