Re: [Tutor] Generate 8 digit random number
> Hey Tutors
>
> I saw a lot of responses...After analyze them I have resumed two
> approaches
>
> 1.- Generate a random number from 0 to and fill this number with
> zeros (Almost everyone's approach)
> 2.- Generate 8 random numbers and join them (Pietro and someone else)
>
> Which one of this is more randomic? I mean which one of these has lower
> chances to get duplicates?
> Until now I'm using approach number 2...Unless anyone has something
> against it...
Frankly,
I would probably prefer #1 because it's probably faster. (You're just
generating one number, and calling 1or 2 functions on it as opposed to at
least 1 random and 1 function for each digit)
Secondly, in both cases, there is the chance that you will get duplicates~~
So the best way to do that is save passwords already generated in a list.
## Try this ###
import random
import cPickle ## This is to save passwords already generated between
program runs.
def getlist():
try:
fileobj = file("passwords.lst","r")
returnlist = cPickle.load(fileobj)
fileobj.close()
except IOError:
returnlist = []
return returnlist
def generate():
return str(random.randrange(0,)).zfill(8) ## Not that this is
the best, but it is concise
def close(li):
obj = file("passwords.lst","w")
cPickle.dump(li,obj)
obj.close()
masterlist = getlist()
num = 0
while 1:
while num in masterlist:
num = generate()
masterlist.append(num)
print num
m = raw_input()
if m == 'quit':
close(masterlist)
break
##
Okay, I believe it will work, I haven't tested it though. Any problems,
grouch at me, please.
Respectfully,
Jacob
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Re: [Tutor] Generate 8 digit random number
On 8/26/05, Alberto Troiano <[EMAIL PROTECTED]> wrote: Hi everyoneI need to generate a password..It has to be an 8 digit number and it has tobe randomThe code I've been trying is the following:import randomrandom.randrange(,) The code works but sometimes it picks a number with 7 digits. Is there anyway that I can tell him to select always a random number with 8 digits?Thanks in advancedAlberto Along with everyone else's solutions, I'll throw out: str(random.randrange()).zfill(8) -Arcege-- There's so many different worlds,So many different suns.And we have just one world,But we live in different ones. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Generate 8 digit random number
On Fri, 26 Aug 2005, Alberto Troiano wrote: > I need to generate a password..It has to be an 8 digit number and it has > to be random > > import random > random.randrange(,) > > The code works but sometimes it picks a number with 7 digits. Is there any > way that I can tell him to select always a random number with 8 digits? well, you've gotten a lot of good answers, so let me chime in with a really ugly one: >>> ''.join(['000',str(random.randrange(,))])[-8:] '00101381' (I don't really recommend this, but this is pretty much akin to the prefered way in IBM's EXEC2 language as I used to use it some 25 years ago!) ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Generate 8 digit random number
> I need to generate a password..It has to be an 8 digit number and it > has to be random I assume you mean a string representing an 8 digit random number? If so... > import random > random.randrange(,) > > The code works but sometimes it picks a number with 7 digits. Is > there any way that I can tell him to select always a random number > with 8 digits? Eventually it will generate a single digit number if its truly random! But when you convert it to a string (see assumption above!) you can pad it with zeros passString = "%08d" % random.randrange(0,) Is that what you want? Alan G. ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Generate 8 digit random number
Sorry for that you will have to change the %09 to a %08 to get 8 digits. I got a bit to fixated on the John Ertl -Original Message- From: Ertl, John Sent: Friday, August 26, 2005 2:23 PM To: Alberto Troiano; tutor@python.org Subject:RE: [Tutor] Generate 8 digit random number Alberto If you don't mind having leading 0 then you could just do the random like you did then format it to 9 digits. You could give this a try num = random.randrange(,) num8 = "%09i" % num John Ertl -Original Message- From: Byron [mailto:[EMAIL PROTECTED] Sent: Friday, August 26, 2005 1:50 PM To: Alberto Troiano; tutor@python.org Subject: Re: [Tutor] Generate 8 digit random number Hi Alberto, Here's how to do it: --- import random def generateKey(): nums = "0123456789" strNumber = "" count = 0 while (count < 8): strNumber += nums[random.randrange(len(nums))] count += 1 print strNumber # A quick test... count = 0 while (count < 1): generateKey() count += 1 --- Byron :-) --- Alberto Troiano wrote: > Hi everyone > > I need to generate a password..It has to be an 8 digit number and it has to > be random > > The code I've been trying is the following: > > > import random > random.randrange(,) > > The code works but sometimes it picks a number with 7 digits. Is there any > way that I can tell him to select always a random number with 8 digits? > > Thanks in advanced > > Alberto > > > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Generate 8 digit random number
Alberto If you don't mind having leading 0 then you could just do the random like you did then format it to 9 digits. You could give this a try num = random.randrange(,) num8 = "%09i" % num John Ertl -Original Message- From: Byron [mailto:[EMAIL PROTECTED] Sent: Friday, August 26, 2005 1:50 PM To: Alberto Troiano; tutor@python.org Subject: Re: [Tutor] Generate 8 digit random number Hi Alberto, Here's how to do it: --- import random def generateKey(): nums = "0123456789" strNumber = "" count = 0 while (count < 8): strNumber += nums[random.randrange(len(nums))] count += 1 print strNumber # A quick test... count = 0 while (count < 1): generateKey() count += 1 --- Byron :-) --- Alberto Troiano wrote: > Hi everyone > > I need to generate a password..It has to be an 8 digit number and it has to > be random > > The code I've been trying is the following: > > > import random > random.randrange(,) > > The code works but sometimes it picks a number with 7 digits. Is there any > way that I can tell him to select always a random number with 8 digits? > > Thanks in advanced > > Alberto > > > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Generate 8 digit random number
Hi Alberto, Here's how to do it: --- import random def generateKey(): nums = "0123456789" strNumber = "" count = 0 while (count < 8): strNumber += nums[random.randrange(len(nums))] count += 1 print strNumber # A quick test... count = 0 while (count < 1): generateKey() count += 1 --- Byron :-) --- Alberto Troiano wrote: > Hi everyone > > I need to generate a password..It has to be an 8 digit number and it has to > be random > > The code I've been trying is the following: > > > import random > random.randrange(,) > > The code works but sometimes it picks a number with 7 digits. Is there any > way that I can tell him to select always a random number with 8 digits? > > Thanks in advanced > > Alberto > > > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Generate 8 digit random number
Hey ALL The code Kent sent might work ok but I didn't see it because of what Pierre said about the left 0's I think I will go with Pietro's approach. I think is neater and shorter than the randrange approach Thanks to all that helped Best Regards Alberto >From: Kent Johnson <[EMAIL PROTECTED]> >CC: tutor@python.org >Subject: Re: [Tutor] Generate 8 digit random number >Date: Fri, 26 Aug 2005 10:16:37 -0400 > >Alberto Troiano wrote: > > Hi Kent > > > > Nope... > > Not workingI'm still getting 7 even 6 digits number > >Are you sure? It works for me: > >>> import random > >>> random.randrange(1000,) >42247129 > >>> for i in range(1000): > ... x = random.randrange(1000,) > ... if len(str(x)) < 8: > ... print x > ... > >>> (prints nothing - they are all 8 digits) > >Kent > > > > Any other idea? > > > > Thanks > > > > Alberto > > > >> From: Kent Johnson <[EMAIL PROTECTED]> > >> CC: tutor@python.org > >> Subject: Re: [Tutor] Generate 8 digit random number > >> Date: Fri, 26 Aug 2005 10:00:50 -0400 > >> > >> Alberto Troiano wrote: > >> > Hi everyone > >> > > >> > I need to generate a password..It has to be an 8 digit number and it > >> has to > >> > be random > >> > > >> > The code I've been trying is the following: > >> > > >> > > >> > import random > >> > random.randrange(,) > >> > > >> > The code works but sometimes it picks a number with 7 digits. Is > >> there any > >> > way that I can tell him to select always a random number with 8 >digits? > >> > >> random.randrange(1000,) ?? > >> > >> Kent > >> > >> ___ > >> Tutor maillist - Tutor@python.org > >> http://mail.python.org/mailman/listinfo/tutor > > > > > > > > > >___ >Tutor maillist - Tutor@python.org >http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Generate 8 digit random number
Alberto Troiano wrote: > Hi Kent > > Nope... > Not workingI'm still getting 7 even 6 digits number Are you sure? It works for me: >>> import random >>> random.randrange(1000,) 42247129 >>> for i in range(1000): ... x = random.randrange(1000,) ... if len(str(x)) < 8: ... print x ... >>> (prints nothing - they are all 8 digits) Kent > > Any other idea? > > Thanks > > Alberto > >> From: Kent Johnson <[EMAIL PROTECTED]> >> CC: tutor@python.org >> Subject: Re: [Tutor] Generate 8 digit random number >> Date: Fri, 26 Aug 2005 10:00:50 -0400 >> >> Alberto Troiano wrote: >> > Hi everyone >> > >> > I need to generate a password..It has to be an 8 digit number and it >> has to >> > be random >> > >> > The code I've been trying is the following: >> > >> > >> > import random >> > random.randrange(,) >> > >> > The code works but sometimes it picks a number with 7 digits. Is >> there any >> > way that I can tell him to select always a random number with 8 digits? >> >> random.randrange(1000,) ?? >> >> Kent >> >> ___ >> Tutor maillist - Tutor@python.org >> http://mail.python.org/mailman/listinfo/tutor > > > > ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Generate 8 digit random number
On Fri, Aug 26, 2005 at 01:50:04PM +, Alberto Troiano wrote: > Hi everyone > > I need to generate a password..It has to be an 8 digit number and it has to > be random > > The code I've been trying is the following: > > > import random > random.randrange(,) > > The code works but sometimes it picks a number with 7 digits. Is there any > way that I can tell him to select always a random number with 8 digits? > > Thanks in advanced Hi, The following code seeems to work. from random import choice lnd='0123456789' print ''.join(map(lambda x,y=lnd: choice(y), range(8))) Bye -- The Old Man and the Sea LITE(tm) -- by Ernest Hemingway 'An old man goes fishing, but doesn't have much luck.' ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Generate 8 digit random number
Hi Kent Nope... Not workingI'm still getting 7 even 6 digits number Any other idea? Thanks Alberto >From: Kent Johnson <[EMAIL PROTECTED]> >CC: tutor@python.org >Subject: Re: [Tutor] Generate 8 digit random number >Date: Fri, 26 Aug 2005 10:00:50 -0400 > >Alberto Troiano wrote: > > Hi everyone > > > > I need to generate a password..It has to be an 8 digit number and it has >to > > be random > > > > The code I've been trying is the following: > > > > > > import random > > random.randrange(,) > > > > The code works but sometimes it picks a number with 7 digits. Is there >any > > way that I can tell him to select always a random number with 8 digits? > >random.randrange(1000,) ?? > >Kent > >___ >Tutor maillist - Tutor@python.org >http://mail.python.org/mailman/listinfo/tutor ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Generate 8 digit random number
Is "0" a valid digit for your password ? If the answer is "YES" then, remember that the "0" at the left of a number are juste removed ! In that case, try writing your password with : "%08d" % password Pierre Alberto Troiano a écrit : > Hi everyone > > I need to generate a password..It has to be an 8 digit number and it has to > be random > > The code I've been trying is the following: > > > import random > random.randrange(,) > > The code works but sometimes it picks a number with 7 digits. Is there any > way that I can tell him to select always a random number with 8 digits? > > Thanks in advanced > > Alberto > > > ___ > Tutor maillist - Tutor@python.org > http://mail.python.org/mailman/listinfo/tutor > -- Pierre Barbier de Reuille INRA - UMR Cirad/Inra/Cnrs/Univ.MontpellierII AMAP Botanique et Bio-informatique de l'Architecture des Plantes TA40/PSII, Boulevard de la Lironde 34398 MONTPELLIER CEDEX 5, France tel : (33) 4 67 61 65 77fax : (33) 4 67 61 56 68 ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
Re: [Tutor] Generate 8 digit random number
Alberto Troiano wrote: > Hi everyone > > I need to generate a password..It has to be an 8 digit number and it has to > be random > > The code I've been trying is the following: > > > import random > random.randrange(,) > > The code works but sometimes it picks a number with 7 digits. Is there any > way that I can tell him to select always a random number with 8 digits? random.randrange(1000,) ?? Kent ___ Tutor maillist - Tutor@python.org http://mail.python.org/mailman/listinfo/tutor
