# Maps composites to primes witnessing their compositeness.
""" Generate an infinite sequence of prime numbers. Super quick sieve implementation by David Eppstein - takes 0.146s for the first 1000 primes on my PC: def gen_primes(): Here it is again for 1000 (prime outputs removed): naive The output of this on my machine for n = 100 is: naiveĪs you can see, there's a pretty big discrepancy. Print 'Time in seconds: ' + str(time() - start) Return l # print result list limited to N elements L += filter(isPrime, range(M - 100, M)) # append prime element of to l N = int(sys.argv) # number of primes wanted (from command-line) Primes = (n for n in count(2) if all(n % d for d in range(2, n))) The solution pointed to by Lennart is called "historic", the one proposed by Ants is called "naive", and the one by RC is called "regexp." from sys import argv Python program to print even and odd numbers from 1 to N(10, 50 100, 1000) Through this tutorial, you will learn how to print even and odd numbers from 1 to N (10, 100, 500, 1000) using the function, for loop, while loop and if-else statement.For reference, there's a pretty significant speed difference between the various stated solutions. If you have a list: List5, 40, 50, 160, 300, 75, 100 List-1 is 100 To print all elements smaller than 100 (the last element in the list). The second attempt is correct because if a is not divisible by either 3 or 5, the expression evaluates to False, and 0 = False gives True. Enumerate function in for loop returns the member of the collection that we are looking at with the index number. If we find any other number which divides, print that value. It should print 10 9 8 7 6 5 4 3 2 1 I'm doing a tutorial about while loops on Codeacademy "Click here!" How to print the value of number during a "x" number of loops? # In case you want to print the multiples starting from some other number other than 1 then you could use the starting_from parameter # In case you want to print every 2nd multiple or every 3rd multiple you could Also See:-Print numbers from 1 to 100 in ez_ad_units!='undefined') _ez_fad_position('div-gpt-ad-knowprogram_com-large-mobile-banner-1-0') In this post, we will discuss how to print 1 to 10 in Python using while loop. The idea to solve this problem is to iterate the val from start to end using a Python loop and for every number, if it is greater than 1, check if it divides n. By clicking Post Your Answer, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct. In this Python program, we replaced the For Loop with While Loop. |News To understand this example, you should have the knowledge of the following Python programming topics: A positive integer greater than 1 which has no other factors except 1 and the number itself is called a prime number.
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