When the logic of the program is done correctly, depending on the requirement provided, Do While loop can be imitated perfectly.In this syntax, the condition appears at the end of the loop, so the statements in the loop execute at least once before the condition is checked. THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS.This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to our Web development, programming languages, Software testing & othersWeb development, programming languages, Software testing & others36 Online Courses | 13 Hands-on Projects | 189+ Hours | Verifiable Certificate of Completion | Lifetime Access

Python has two primitive loop commands: while loops; for loops; The while Loop.

If the condition is true it jumps to do, and the statements in the loop are again executed. Print i as long as i is less than 6: i = 1 while i 6: print(i) i += 1.

in Python, or a nice way to implement such a looping construct?This is a similar construct, taken from the link above.I prefer to use a looping variable, as it tends to read a bit nicer than just "while 1:", and no ugly-looking There's no prepackaged "do-while", but the general Python way to implement peculiar looping constructs is through generators and other iterators, e.g. See Python 2.7.3 $ python -mtimeit 'while 0:pass' 100000000 loops, best of 3: 0.0132 usec per loop $ python -mtimeit 'while False:pass' 10000000 loops, best of 3: 0.0538 usec per loop@jpmc26 I've used Python for programming contests to cut down on development time. Here we discuss the flowchart of Do While Loop in Python with the syntax and example. If the condition is initially false, the loop body will not be executed at all.

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:executes one leg, as desired, even though the predicate's already false at the start.It's normally better to encapsulate more of the looping logic into your generator (or other iterator) -- for example, if you often have cases where one variable increases, one decreases, and you need a do/while loop comparing them, you could code:It's up to you how much loop-related logic you want to put inside your generator (or other iterator) and how much you want to have outside of it (just like for any other use of a function, class, or other mechanism you can use to refactor code out of your main stream of execution), but, generally speaking, I like to see the generator used in a site design / logo © 2020 Stack Exchange Inc; user contributions licensed under When do I use them? The syntax of a while loop in Python programming language is −.

I read the comment found at I'd like to point out that "do while" is distinct from "do until".BTW, this is called "loop-and-a-half". With the while loop we can execute a set of statements as long as a condition is true.

In this, if the condition is true then while statements are executed if not true another condition is checked by if loop and the statements in it are executed. See @Bort The loop-and-a-half construct guarantees that @brandon yes, the "easy, natural way" is the loop-and-a-half(TM) way, especially because the [just-one-fscking-]until way is so much harder to grasp than "infinite loop with break" ... the truly pythonic, PEP-excreting way. At times we encounter situations where we want to use the good old do-while loop in Python. 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. You may also look at the following article to learn more-© 2020 - EDUCBA. ALL RIGHTS RESERVED. Then the current i value is added with 1 to get the new value of i. Stack Overflow for Teams is a private, secure spot for you and A while loop statement in Python programming language repeatedly executes a target statement as long as a given condition is true.. Syntax.

while expression: statement(s) Here, statement(s) may be a single statement or a block of statements. The body of the while loop starts with indentation and as soon as the unindented line is found then that is marked as the end of the loop.This is a guide to Do while loop in python. While loop in python has the syntax of the form:The above statements can be a single statement or block of statements. If you have any problems, give us a simplified idea of what you want to accomplish.