Re: [Tutor] 6 random numbers
> print random.randrange(1,42) > If you want to collect the intermediate results, either store them in a > list: > > results = [] > for i in range(6): > results.append(random.randrange(1,42)) Gmail has removed the "Reply All" function for some ABSOLUTELY RIDICULOUS REASON, so I think people missed my reply on this. randrange is a horrible way to generate lottery numbers because it doesn't generate unique numbers, and as for lotteries I don't think I've seen a single one where they put the balls back before selecting a new. random.sample is better because it does (for this purpose, at least) and it stores the result in a list automatically. Let's hope this email goes to the right thread. :/ -- best regards, Robert S. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] 6 random numbers
ADRIAN KELLY, 16.10.2011 21:43: anyone know how i would go about printing 6 random numbers print(75, 45, 6, 35, 36472, 632) Numbers were generated by typing randomly on my keyboard. Sorry-for-taking-it-all-too-literally-ly, Stefan ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] 6 random numbers
ADRIAN KELLY wrote: hello all, anyone know how i would go about printing 6 random numbers, i know i could copy and paste 6 times (which would work) but i was thinking about a while loop, ie. while lottery_numbers.count is <7. Is it possible to code this? is it possible to count random variables? i am trying to keep the program as simple as possible, cheers any help would be welcome, import random lottery_numbers=random.randrange(1,42) print lottery_numbers Whenever you want to do something repeatedly, a for-loop or while-loop is usually the answer. If you know how many times you need to do it, use a for-loop: for i in range(6): print random.randrange(1,42) If you don't know how many times, use a while-loop: total = 0 while total < 100: total += random.randrange(1,42) print total If you want to collect the intermediate results, either store them in a list: results = [] for i in range(6): results.append(random.randrange(1,42)) or use a list comprehension, which is syntactic sugar for a for-loop: results = [random.randrange(1,42) for i in range(6)] -- Steven ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] 6 random numbers
>> hello all, >> anyone know how i would go about printing 6 random numbers, i know i could >> copy and paste 6 times (which would work) but i was thinking about a while >> loop, ie. while lottery_numbers.count is <7. >> Is it possible to code this? is it possible to count random variables? i am >> trying to keep the program as simple as possible, cheers >> >> any help would be welcome, >> >> import random >> lottery_numbers=random.randrange(1,42) >> print lottery_numbers >> > > Following example may be useful: > x = [random.randrange(1, 1+random.randrange(42) for _ in range(100)] > > Useful read: > http://docs.python.org/tutorial/datastructures.html This wouldn't work because if you're making a lottery-type program, you can't generate the same number again. A solution would be to check if, say we stored the numbers in a list, len(set(numbers)) == 7 and if it's not append another (random) number. This would be done until len(set(numbers)) == 7. However, it's a bit tedious and the random module offers a much better option: import random numbers = random.sample(range(1,42), 7) random.sample returns k unique random elements from a population sequence; in this case the population sequence is range(1, 42) (I think python 2.x it'd be xrange()?) and the second argument would be the number of elements we want. >>>random.sample(range(1,42), 7) [16, 29, 17, 2, 12, 36, 10]#this list is in selection order! -- best regards, Robert S. ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] 6 random numbers
On 17-Oct-2011, at 1:13 AM, ADRIAN KELLY wrote: > hello all, > anyone know how i would go about printing 6 random numbers, i know i could > copy and paste 6 times (which would work) but i was thinking about a while > loop, ie. while lottery_numbers.count is <7. > Is it possible to code this? is it possible to count random variables? i am > trying to keep the program as simple as possible, cheers > > any help would be welcome, > > import random > lottery_numbers=random.randrange(1,42) > print lottery_numbers > Following example may be useful: x = [random.randrange(1, 1+random.randrange(42) for _ in range(100)] Useful read: http://docs.python.org/tutorial/datastructures.html -- shantanoo http://xkcd.com/221/ ___ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
