How to Use "break" and "continue" in Python "while" Loops
Skills:
Python for Data90%
Key Takeaways
The video demonstrates the use of break and continue statements in Python while loops, showcasing how to control the flow of a loop based on specific conditions.
Full Transcript
all right so let's see how we can use these key terms I'm going to write another while loop that was pretty similar to the original one we saw so first we need to initialize a variable and say n is equal to five then I'm going to write my while loop addition is going to be if it's greater than zero then I'm going to execute the block of code below so first thing we did was decrement in by one and now this is where I'm going to include a conditional statement my if statement if in is equal to two I'm actually gonna break out of my block but if it does not equal to that I'm going to continue on and I'm going to print in just like before now this next piece right here is going to execute once the while loop is finished normally and I'm just going to print OOP is finished all right so take a minute to think about what is going to happen and then we'll run it and see if you're right all right let's see you all right so what I see now is that I printed those first two like I did before I have four and I have three but whenever in over here we can see in is currently equal to two it ran into this if statement and it actually broke out of that code entirely and it went down to the first statement after the while loop which is loop is finished so now I'm going to simply change this word break to continue now let's see what happens when I run this code with the word continue all right so we see now I have four and three still I don't have to but I did continue on and have one and zero and then once that loop was exhausted I then printed my loop is finished so let's look at this step by step with our debugger so first we're going to initialize our variable to five and I'm going to do just like I did before so five is greater than zero so it returns true 4 does not equal two so this returns false so it's not going to execute that code but it is going to go ahead and jump to the next line which is to print in but this is still inside of my loop so I'm going to then jump back up to the top of my loop and check if the condition is still true so I'll continue to do this until I get to to now when in equals 2 this is going to return true and if this returns true my if statement is going to start so if this returns true I'm going to jump into my if statement and it says continue so what's going to happen is I actually jump back up to my while loop and I check my condition and here I see that it's still true so I'm going to continue on and that's why I get the one next and I left out two was because it never actually reached the print in
Original Description
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You'll walk through practical examples of how to use "break" and "continue" in Python when you're dealing with "while" loops. You'll debug the example code, so you'll get a clear sense of what's happening behind the scenes. Click here to learn more: https://realpython.com/courses/mastering-while-loops/
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