You can give it a boolean condition (boolean values are either True or False in Python), and the loop will execute repeatedly until that condition becomes false. If you want to loop forever, all you have to do is start an infinite loop.

Here's part of the program that's supposed to bring you back to the beginning. goagain = raw_input("Would you like to do the equation again? (Y/N)") if goagain == "Y": #Get values again. loop=2. elif goagain == "N": print "Bye!" #End program. loop=0. else: print"Sorry, that wasn't Y …

Dec 8, 2014 · You can bring the raw_input step into a while loop and only exit if a valid response was received. I added a couple of comments to explain what's going on. while True: # repeat forever unless it reaches "break" or "return" print "What's your favourite type of pokemon?" fav_type = raw_input() if "fire" in fav_type: print "So you like fire types?

Sep 30, 2023 · 1. How to Loop Back to the Beginning of a Program in Python Using a Loop. We can loop back to the start using a control flow statement, i.e., a while statement. To do that, wrap the complete program in a while loop that is always True. Moreover, add a continue statement at a point where you want to start the program from the beginning.

Using break The break statement will completely break out of the current loop, meaning it won’t run any more of the statements contained inside of it. >>> names = ["Rose", "Max", "Nina", "Phillip"] >>> for name in names: ... print(f"Hello, {name}") ... if name == "Nina": .

The continue statement in Python returns the control to the beginning of the while loop. The continue statement rejects all the remaining statements in the current iteration of the loop and moves the control back to the top of the loop. The continue statement can be used in both while and for loops. Example

Sep 28, 2021 · The simplest option is to add while True: as the first line, and indent the rest of the code. You can also remove the last input by doing so. Regarding your last point, are you asking about user-inputted expressions? E.g. inputting the string "3 * 4"? You can use eval("3 * 4") BUT...

The continue Statement: The continue statement in Python returns the control to the beginning of the while loop. The continue statement rejects all the remaining statements in the current iteration of the loop and moves the control back to the top of the loop.

Apr 12, 2020 · Once I receive a certain value, I'd like to go to the start of a loop. The break and continue statements are useful inside loops. With correctly structured code, go-tos are unnecessary. If you share more of what you are trying to accomplish, I can help you figure out a better way to do it.

If you want to terminate the whole program, import sys at the start of your code (before the while True:-- no use repeating the import!-) and whenever you want to terminate the program, use sys.exit()