如何在打印506前终止Python循环？寻求解决方案

Got it, let's break down why 506 is showing up and fix this for you.

Looking at your code, two issues are causing the unwanted 506 output:

1. You’re printing mySum before checking if it’s reached your threshold (500). So when mySum hits 506, you print it first, then trigger the break.
2. There’s an extra print(mySum) outside the loop that prints 506 a second time after the loop exits.

To terminate the loop before printing 506, reorder your logic to check the condition first, then print only if the threshold hasn’t been hit. Here’s the corrected code:

mySum = 0
for i in range(0, 1000, 2):
    mySum += i
    # Check if we've hit the threshold first—if yes, exit without printing
    if mySum >= 500:
        break
    # Only print if we haven't reached 500 yet
    print(mySum)

How this works: #

• After each addition to mySum, we immediately check if it’s >= 500. If it is, we exit the loop right away without printing that value.
• We only print mySum when it’s still below 500, so your output will stop at the last valid value before 506 (which is 462 in your original example).

内容的提问来源于stack exchange，提问作者Varun_Sharma