Which keyword is used to create a loop in Python?

The keyword used to create a loop in Python is 'while.' This keyword initiates a while loop, which repeatedly executes a block of code as long as a specified condition evaluates to True. This structure allows for powerful iteration capabilities, enabling developers to run code multiple times without having to write it out repeatedly.

In a while loop, the condition is checked before each iteration, and if it is not met, the loop terminates. This makes the 'while' keyword essential for scenarios where the number of iterations is not predetermined and depends on the outcome of the checks within the loop. While other control structures are used for different purposes in Python, 'while' specifically denotes the creation of a loop that will continue executing based on a condition.