[Tutor] Contents of Tutor digest, Help with hangman
John Palmer
speederpython at gmail.com
Mon Jul 19 18:20:35 CEST 2010
Thanks a lot for the help guys, but when I use the getpass.getpass(Enter
your word here, I get a different response to what you get. This is what
happen with mine:
>>> import getpass
>>> s = getpass.getpass("Enter your word here: ")
Warning: Password input may be echoed.
Please enter your secret word: hangman
>>> s
'hangman'
>>>
I'm guessing that its something to do with the "Warning: Password may be
echoed" line. In the documentation it says:
"If echo free input is unavailable getpass() falls back to printing a
warning message to stream and reading
from sys.stdin and issuing a GetPassWarning."
But i'm not sure what that means, sry to be a pain, and again thanks for all
the help.
I did manage to find another solution which is just to print a large number
of blank lines, which just moved the line with the word in it off the
screen, but I don't really like it to be honest. The getpass module seems to
be the best solution i just don't understand why its not working for me.
Regards
John
On 19 July 2010 16:02, <tutor-request at python.org> wrote:
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> Today's Topics:
>
> 1. Re: A file containing a string of 1 billion random digits.
> (Peter Otten)
> 2. Re: A file containing a string of 1 billion random digits.
> (ALAN GAULD)
> 3. Re: A file containing a string of 1 billion random digits.
> (Richard D. Moores)
> 4. Re: A file containing a string of 1 billion random digits.
> (Richard D. Moores)
> 5. Re: Contents of Tutor digest, help with Hangman program
> (Steven D'Aprano)
> 6. Re: Contents of Tutor digest, help with Hangman program
> (bob gailer)
> 7. Re: A file containing a string of 1 billion random digits.
> (Steven D'Aprano)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 19 Jul 2010 15:45:43 +0200
> From: Peter Otten <__peter__ at web.de>
> To: tutor at python.org
> Subject: Re: [Tutor] A file containing a string of 1 billion random
> digits.
> Message-ID: <i21ku0$e00$1 at dough.gmane.org>
> Content-Type: text/plain; charset="ISO-8859-1"
>
> Richard D. Moores wrote:
>
> > On Mon, Jul 19, 2010 at 04:51, Peter Otten <__peter__ at web.de> wrote:
> >> bob gailer wrote:
> >>
> >>> Check this out:
> >>>
> >>> import random, time
> >>> s = time.time()
> >>> cycles = 1000
> >>> d = "0123456789"*100
> >>> f = open("numbers.txt", "w")
> >>> for i in xrange(n):
> >>> l = []
> >>> l.extend(random.sample(d, 1000))
> >>> f.write(''.join(l))
> >>> f.close()
> >>> print time.time() - s
> >>
> >> Note that this is not random. E. g. the start sequence "0"*101 should
> >> have a likelyhood of 1/10**101 but is impossible to generate with your
> >> setup.
> > I not sure exactly what you mean, because I don't fully understand
> > that '*' (despite Alan's patient explanation), but if you run
> >
> > import random
> > cycles = 100000
> > d = "0123456789"*10
> > for i in range(cycles):
> > l = []
> > l.extend(random.sample(d, 100))
> > s = (''.join(l))
> > if s[:4] == '0101':
> > print(s)
> >
> > You'll see a bunch of strings that begin with "0101"
> >
> > Or if you run
> >
> > import random
> > cycles = 50
> > d = "0123456789"*10
> > for i in range(cycles):
> > l = []
> > l.extend(random.sample(d, 100))
> > s = (''.join(l))
> > if s[:1] == '0':
> > print(s)
> >
> > You'll see some that begin with '0'.
> >
> > Am I on the right track?
>
> No. If you fire up your python interpreter you can do
>
> >>> "0"*10
> '0000000000'
>
> i. e. "0"*101 is a sequence of 101 zeros. Because a sample can pick every
> item in the population only once and there are only 100 zeros, at most 100
> of them can be drawn, and the more are drawn the less likely it becomes
> that
> another one is drawn. The simplest demo is probably
>
> random.sample([0, 1], 2)
>
> Possible returns are [0, 1] and [1, 0], but for true randomness you want
> [1,
> 1] and [0, 0], too. The more often the items are repeated the less
> pronounced that bias becomes, e. g.
>
> random.sample([0, 1, 0, 1], 2)
>
> can produce all combinations, but [0, 1] is twice as likely as [0, 0]
> because once the first 0 is drawn there is only one 0 left, but two 1s.
> Here's a demonstration:
>
> >>> from collections import defaultdict
> >>> d = defaultdict(int)
> >>> for i in range(1000):
> ... d[tuple(random.sample([0, 1]*2, 2))] += 1
> ...
> >>> dict(d)
> {(0, 1): 333, (1, 0): 308, (0, 0): 174, (1, 1): 185}
>
> Peter
>
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 19 Jul 2010 07:14:18 -0700 (PDT)
> From: ALAN GAULD <alan.gauld at btinternet.com>
> To: "Richard D. Moores" <rdmoores at gmail.com>
> Cc: tutor at python.org
> Subject: Re: [Tutor] A file containing a string of 1 billion random
> digits.
> Message-ID: <94846.12586.qm at web86706.mail.ird.yahoo.com>
> Content-Type: text/plain; charset=utf-8
>
>
>
> > 4 and executed many times. Seems the 0 in 0dddd is
> > there when a dddd is a 3-digit number such as 123.
> > In that case a zero is prefixed to 123 to produce
> > 0123. Or if just 23, 2 zeros are prefixed, etc.
> > Correct?
>
> Yes, the zero indicates that the string should be padded
> with zeros to the length specified. The format string
> documentation gives all the details but while zero
> padding is fairly common the asterisk is less so, that's
> why I explained it but not the zero...I assumed it was
> the asterisk that was confusing you...
>
> HTH,
>
> Alan G.
>
>
>
> ------------------------------
>
> Message: 3
> Date: Mon, 19 Jul 2010 07:14:13 -0700
> From: "Richard D. Moores" <rdmoores at gmail.com>
> To: Peter Otten <__peter__ at web.de>
> Cc: tutor at python.org
> Subject: Re: [Tutor] A file containing a string of 1 billion random
> digits.
> Message-ID:
> <AANLkTikctB03vyzHhhvmpg8Hrf6lMhRDIGbtKcoNPcn- at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> On Mon, Jul 19, 2010 at 06:45, Peter Otten <__peter__ at web.de> wrote:
>
> > No. If you fire up your python interpreter you can do
> >
> >>>> "0"*10
> > '0000000000'
>
> Ah, you're absolutely right. Sorry, I misunderstood you and your '*'.
> Good catch.
>
> Dick
>
>
> ------------------------------
>
> Message: 4
> Date: Mon, 19 Jul 2010 07:48:13 -0700
> From: "Richard D. Moores" <rdmoores at gmail.com>
> To: ALAN GAULD <alan.gauld at btinternet.com>
> Cc: tutor at python.org
> Subject: Re: [Tutor] A file containing a string of 1 billion random
> digits.
> Message-ID:
> <AANLkTinCzLYCJ6aOfPo64KFUV1UeAcnE7bvMhvutZsh_ at mail.gmail.com>
> Content-Type: text/plain; charset=UTF-8
>
> On Mon, Jul 19, 2010 at 07:14, ALAN GAULD <alan.gauld at btinternet.com>
> wrote:
> >
> >
> >> 4 and executed many times. Seems the 0 in 0dddd is
> >> there when a dddd is a 3-digit number such as 123.
> >> In that case a zero is prefixed to 123 to produce
> >> 0123. Or if just 23, 2 zeros are prefixed, etc.
> >> Correct?
> >
> > Yes, the zero indicates that the string should be padded
> > with zeros to the length specified. The format string
> > documentation gives all the details
>
> I've been unable to find any mention of that use of the asterisk in
> the 3.1 docs, in
>
> http://docs.python.org/py3k/library/string.html#formatspec
>
> or
>
> http://docs.python.org/py3k/library/string.html#formatstrings
>
> Suggestion?
>
> Dick
>
>
> ------------------------------
>
> Message: 5
> Date: Tue, 20 Jul 2010 00:54:57 +1000
> From: Steven D'Aprano <steve at pearwood.info>
> To: tutor at python.org
> Subject: Re: [Tutor] Contents of Tutor digest, help with Hangman
> program
> Message-ID: <201007200054.57927.steve at pearwood.info>
> Content-Type: text/plain; charset="utf-8"
>
> On Mon, 19 Jul 2010 09:37:25 pm John Palmer wrote:
> > Hi Alan thanks for the help. I did try the getpass module, I think I
> > used:
> >
> > getpass.getpass()
> >
> > This actually prompted the user to enter a password, which isn't
> > really what I want. Unless there's something i'm missing with this
> > module? I'll take another look anyway.
>
> Tell the function what prompt to use:
>
> >>> import getpass
> >>> s = getpass.getpass("Please enter your secret word: ")
> Please enter your secret word:
> >>>
> >>> print s
> anti-disestablishmentarianism
>
>
>
> --
> Steven D'Aprano
>
>
> ------------------------------
>
> Message: 6
> Date: Mon, 19 Jul 2010 10:57:11 -0400
> From: bob gailer <bgailer at gmail.com>
> To: John Palmer <speederpython at gmail.com>
> Cc: tutor at python.org
> Subject: Re: [Tutor] Contents of Tutor digest, help with Hangman
> program
> Message-ID: <4C4467C7.1060701 at gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"; Format="flowed"
>
> On 7/19/2010 7:37 AM, John Palmer wrote:
> > Hi Alan thanks for the help. I did try the getpass module, I think I
> > used:
> >
> > getpass.getpass()
> >
> > This actually prompted the user to enter a password, which isn't
> > really what I want. Unless there's something i'm missing with this
> > module? I'll take another look anyway.
>
> Reading the documentation (15.7 in Python 3):
>
> The getpass module provides two functions:
>
> getpass.getpass(/prompt='Password: '/, /stream=None/)?
> <
> http://docs.python.org/py3k/library/getpass.html?highlight=getpass#getpass.getpass
> >
>
> Prompt the user for a password without echoing. The user is prompted
> using the string /prompt/, which defaults to 'Password: '.
>
> HTH
>
> --
> Bob Gailer
> 919-636-4239
> Chapel Hill NC
>
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> ------------------------------
>
> Message: 7
> Date: Tue, 20 Jul 2010 01:01:58 +1000
> From: Steven D'Aprano <steve at pearwood.info>
> To: tutor at python.org
> Subject: Re: [Tutor] A file containing a string of 1 billion random
> digits.
> Message-ID: <201007200101.58268.steve at pearwood.info>
> Content-Type: text/plain; charset="iso-8859-1"
>
> On Tue, 20 Jul 2010 12:48:13 am Richard D. Moores wrote:
> > On Mon, Jul 19, 2010 at 07:14, ALAN GAULD <alan.gauld at btinternet.com>
> wrote:
> > >> 4 and executed many times. Seems the 0 in 0dddd is
> > >> there when a dddd is a 3-digit number such as 123.
> > >> In that case a zero is prefixed to 123 to produce
> > >> 0123. Or if just 23, 2 zeros are prefixed, etc.
> > >> Correct?
> > >
> > > Yes, the zero indicates that the string should be padded
> > > with zeros to the length specified. The format string
> > > documentation gives all the details
> >
> > I've been unable to find any mention of that use of the asterisk in
> > the 3.1 docs, in
> >
> > http://docs.python.org/py3k/library/string.html#formatspec
> >
> > or
> >
> > http://docs.python.org/py3k/library/string.html#formatstrings
> >
> > Suggestion?
>
> You're looking in the wrong place. This is not part of format strings,
> as it doesn't use the str.format() method. It uses the % string
> interpolation operator.
>
>
> http://docs.python.org/py3k/library/stdtypes.html#old-string-formatting-operations
>
>
> You can get the same result with the format mini-language. See the
> example "Nested arguments and more complex examples" just before the
> section on Template Strings here:
>
>
> http://docs.python.org/py3k/library/string.html#format-specification-mini-language
>
>
>
>
> --
> Steven D'Aprano
>
>
> ------------------------------
>
> _______________________________________________
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