Loops execute code repeatedly from "summary" of Python Programming by John M. Zelle
Loops are a fundamental concept in programming that allow us to execute code repeatedly. This is particularly useful when we need to perform the same task multiple times without having to write the same code over and over again. With loops, we can automate the process and make our programs more efficient and concise. In Python, there are two main types of loops: the "for" loop and the "while" loop. The "for" loop is used when we know exactly how many times we want to repeat a certain block of code. We can specify the number of iterations by providing a sequence of values for the loop to iterate over. This could be a range of numbers, a list, a tuple, or any other iterable object. On the other hand, the "while" loop is used when we want to repeat a block of code as long as a certain condition is true. This allows for more flexibility, as we can continue executing the loop until a specific condition is met. However, we need to be careful with while loops to avoid infinite loops, where the condition never becomes false and the loop keeps running indefinitely. Both types of loops have their own use cases, and choosing the right one depends on the specific requirements of the program. By mastering loops, we can write more powerful and efficient programs that can handle repetitive tasks with ease. Practice and experimentation are key to becoming proficient with loops, as they are a fundamental building block of programming logic.
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