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For example, In fact, all the Python control structures can be intermingled with one another to whatever extent you need. The while loop in Python is used to iterate over a block of code as long as the test expression (condition) is true. While loops, like the ForLoop, are used for repeating sections of code - but unlike a for loop, the while loop will not run n times, but until a defined condition is no longer met. Usage in Python. Its construct consists of a block of code and a condition. It is still true, so the body executes again, and In the example above, when the loop is encountered, In each example you have seen so far, the entire body of the About now, you may be thinking, “How is that useful?” You could accomplish the same thing by putting those statements immediately after the In this case, the loop repeated until the condition was exhausted: One of the following interpretations might help to make it more intuitive:If you don’t find either of these interpretations helpful, then feel free to ignore them.First of all, lists are usually processed with definite iteration, not a Secondly, Python provides built-in ways to search for an item in a list. Leave a comment below and let us know.Almost there! Here we use the for loop to loop through the word computer. Loop through words. We generally use this loop when we don't know the number of times to iterate beforehand. As the for loop in Python is so powerful, while is rarely used, except in cases … Python uses indentation as its method of grouping statements.Here, key point of the while loop is that the loop might not ever run. This results in a loop that never ends. A while loop statement in Python programming language repeatedly executes a target statement as long as a given condition is true.. Syntax. Python has two primitive loop commands: while loops; for loops; The while Loop. Example. While loops. The condition may be any expression, and true is any non-zero value. You’ll be able to construct basic and complex while loops, interrupt loop execution with break and continue, use the else clause with a while loop, and deal with infinite loops. Happily, you won’t find many in Python.This only works with simple statements though. You must use caution when using while loops because of the possibility that this condition never resolves to a FALSE value. Complete this form and click the button below to gain instant access: With each iteration, the current value of the index count is displayed and then increased by 1.A loop becomes infinite loop if a condition never becomes FALSE. The syntax of a while loop in Python programming language is −. When the condition is tested and the result is false, the loop body will be skipped and the first statement after the while loop will be executed.When the above code is executed, it produces the following result −The block here, consisting of the print and increment statements, is executed repeatedly until count is no longer less than 9. Print i as long as i is less than 6: i = 1 while i 6: print(i) i += 1. You can’t combine two compound statements into one line. For example, you might write code for a service that starts up and runs forever accepting service requests. How are you going to put your newfound skills to use? When do I use them? If the condition is initially false, the loop body will not be executed at all. word = "computer" for letter in word: print letter Output c o m p u t e r While Loop. In this tutorial, you'll learn about indefinite iteration using the Python while loop. When the condition becomes false, program control passes to the line immediately following the loop.In Python, all the statements indented by the same number of character spaces after a programming construct are considered to be part of a single block of code.
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