anonymous
  • anonymous
hello, I'm stuck on the second problem of set 1. I am trying to write code to add the logs of each prime generated. I think it's close, but for some reason, it never exits the while loop when I want it to (when the number chosen is reached by the prime generator). No matter what, it seems to just give the sum of the first two primes. Any advice is much appreciated... the question box won't let me add my code... how do I share the full code?
MIT 6.00 Intro Computer Science (OCW)
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
I attached the code to this answer... not sure how I was supposed to share it..
anonymous
  • anonymous
Prime number: "The next prime number cannot be divided by other primes (except one)" like 2 only with 2 & 1, 3 only with 3&1, 4 (not a prime cuz 4%2(prime) = 0) and so on. Don't overthink just, pick a number "n" for how many primes, every time you found a new prime, add it into a variable (var = 0), var += log(newprime). and print outside the while loop .... now that I see, your "n" variable never decrease, your while loops is infinite, add the "n -= 1"
anonymous
  • anonymous
I'm sorry, I can't really follow what you're saying... n isn't supposed to decrease. n is supposed to be the chosen number through which the primes are generated. I've already completed the first part of the problem set that would require picking a certain number of primes. This code is pick a number up through which all primes are generated, to then find their log, and then add those logs. Rather than n decreasing, the "number" variable is supposed to increase (as it does fine) and when it hits n, it is supposed to stop the loop. Per my understanding of loops, the first part of this is happening (the variable is increasing, as evidenced by it being printed properly) but the second part, the loop stopping, does not occur.

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anonymous
  • anonymous
Sorry I didn't see number either, i'm so into another thing, I just run it on my mind, I use n=5, and only gave me log(3) and finish the code. What I mean was: a prime number can only be divided by itself and 1, so a prime % anyOtherPrime != 0.
anonymous
  • anonymous
recheck that your looping line very well
rsmith6559
  • rsmith6559
I didn't really think through your code, but I see a couple of things: Python's null value is None, not none. Yes it does make a difference. If you print the value that your condition evaluates to on each iteration, I'll bet you'll be surprised.

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