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> > Today's Topics:
> 
>    1. Re: appending key-value pairs to a dict (Peter
> Hansen)
>    2. Re: Is Python suitable for a huge, enterprise
> size app?
>       (Paul Rubin)
>    3. Re: appending key-value pairs to a dict (Brian
> Beck)
>    4. Re: Comparing 2 similar strings? (Skip
> Montanaro)
>    5. Re: Is Python suitable for a huge, enterprise
> size app?
>       (Paul Rubin)
>    6. Re: buffer_info error ([EMAIL PROTECTED])
>    7. Re: appending key-value pairs to a dict (James
> Stroud)
>    8. From the call hook, how do I know more
> precisely what is
>       called? (Vijay Kumar)
>    9. Re: PyGame and Rotozoom (Sorry if OT) (Lee
> Harr)
>   10. Re: buffer_info error (Jp Calderone)
>   11. Re: appending key-value pairs to a dict (Roy
> Smith)
>   12. Re: Is Python suitable for a huge, enterprise
> size app?
>       (Dave Brueck)
>   13. Re: Process monitoring (John Abel)
> > 发件人: Peter Hansen <[EMAIL PROTECTED]>
> 收件人: python-list@python.org
> 日期: Fri, 20 May 2005 16:12:17 -0400
> 主题: Re: appending key-value pairs to a dict
> 
> rbt wrote:
> > I know how to setup an empty list and loop thru
> something... appending 
> > to the list on each loop... how does this work
> with dicts?
> > 
> > I'm looping thru a list of files and I want to put
> the file's name and 
> > its sha hash into a dict on each loop.
> 
> Whereas with a list you would call "append" in the
> loop, with a 
> dictionary you simply use an indexed-assignment type
> of access:
> 
> mydict = {}
> for filename in some_list_of_filenames:
>      hash =
> sha.sha(open(filename).read()).hexdigest() # or
> whatever
>      mydict[filename] = hash
> 
> -Peter
> 
> > 发件人: Paul Rubin <http://[EMAIL PROTECTED]>
> 收件人: python-list@python.org
> 日期: 20 May 2005 13:12:50 -0700
> 主题: Re: Is Python suitable for a huge, enterprise
> size app?
> 
> Dave Brueck <[EMAIL PROTECTED]> writes:
> > One thing from your experience that did resonate
> with me is that,
> > except for ftplib and occasionally urllib (for
> basic, one-shot GETs),
> > we don't use any of the standard library's
> "protocol" modules - partly
> > because we had to implement our own HTTP libraries
> for performance and
> > scalability reasons anyway, and partly because we
> had trouble figuring
> > out e.g. all the ins and outs of
> urllib/urllib2/httplib.
> 
> What do you use for HTTPS?  And did you use the
> Cookie module in your
> HTTP servers?  You may have had problems without
> even being aware of
> them (until recently if you used Cookie with its
> default settings, any
> attacker could completely take over your server by
> sending you
> carefully concoted cookies).  I'm not trying to be
> contentious here,
> just mentioning a couple further cases of where
> problems aren't
> visible from far away but are there when you look
> close.
> 
> > 发件人: Brian Beck <[EMAIL PROTECTED]>
> 收件人: python-list@python.org
> 日期: Fri, 20 May 2005 16:14:17 -0400
> 主题: Re: appending key-value pairs to a dict
> 
> rbt wrote:
> > I know how to setup an empty list and loop thru
> something... appending 
> > to the list on each loop... how does this work
> with dicts?
> > 
> > I'm looping thru a list of files and I want to put
> the file's name and 
> > its sha hash into a dict on each loop.
> 
> Like so:
> 
> d = {}
> for filename in files:
>      d[sha_func(filename)] = filename
> 
> 
> Or like so:
> 
> d = dict([(sha_func(filename), filename) for
> filename in files])
> 
> --
> Brian Beck
> Adventurer of the First Order
> 
> > 发件人: Skip Montanaro <[EMAIL PROTECTED]>
> 抄送: python-list@python.org
> 收件人: Steve Holden <[EMAIL PROTECTED]>
> 日期: Fri, 20 May 2005 15:16:49 -0500
> 主题: Re: Comparing 2 similar strings?
> 
> 
>     Steve> (is this the same as 'Conchobar'?)
> 
> No, that's a trendy pub in Key West...
> 
> <wink>
> 
> Skip
> 
> > 发件人: Paul Rubin <http://[EMAIL PROTECTED]>
> 收件人: python-list@python.org
> 日期: 20 May 2005 13:15:48 -0700
> 主题: Re: Is Python suitable for a huge, enterprise
> size app?
> 
> "Fredrik Lundh" <[EMAIL PROTECTED]> writes:
> > this has been reported before, and it won't get
> fixed (unless you're
> > volunteering to add Python-compatible garbage
> collection to Tk, that is).
> 
> Yeah, I think I understand what the issue is.  I can
> think of some
> kludgy possible fixes but I assume they've been
> thought about already
> and rejected.  The workaround of making the
> application save an extra
> reference isn't too bad, but all relevant docs that
> say anything about
> these images should mention the requirement
> emphatically.
> 
> > 发件人: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
> 收件人: python-list@python.org
> 日期: 20 May 2005 13:18:33 -0700
> 主题: Re: buffer_info error
> 
> i am filling in a packet with source and destination
> address and using
> the buffer_info call to pass on the address to an
> underlying low level
> call.
> 
> The src and dest are strings, but buffer_info
> expects an array. How do
> i deal with this?
> 
> 
> > 发件人: James Stroud <[EMAIL PROTECTED]>
> 收件人: python-list@python.org
> 日期: Fri, 20 May 2005 13:20:48 -0700
> 主题: Re: appending key-value pairs to a dict
> 
> On Friday 20 May 2005 01:04 pm, rbt wrote:
> > I know how to setup an empty list and loop thru
> something... appending
> > to the list on each loop... how does this work
> with dicts?
> >
> > I'm looping thru a list of files and I want to put
> the file's name and
> > its sha hash into a dict on each loop.
> >
> > Many thanks,
> >
> > rbt
> 
> Simple assignment.
> 
> adict[filename] = an_sha_hash
> 
> 
> 
> -- 
> James Stroud
> UCLA-DOE Institute for Genomics and Proteomics
> Box 951570
> Los Angeles, CA 90095
> 
> http://www.jamesstroud.com/
> 
> > 发件人: Vijay Kumar <[EMAIL PROTECTED]>
> 抄送: [EMAIL PROTECTED]
> 收件人: python-list@python.org
> 日期: Fri, 20 May 2005 14:21:33 -0600
> 主题: From the call hook, how do I know more
> precisely what is called?
> 
> Hi,
> 
> I wrote a trace function using the profiling and
> tracing hooks
> provided by the python interpreter.
> 
> The Python interpreter reports the calls occuring in
> the source
> program to my trace function.
> 
> How can I know whether the call happened is a
> function call or method
> call and if it is a method call what is its self
> object and/or  class
> is?.
> 
> I receive a frame object from the interpreter for
> every call. 
> 
> Thanks,
> Vijay.
> 
> > 发件人: Lee Harr <[EMAIL PROTECTED]>
> 收件人: python-list@python.org
> 日期: Fri, 20 May 2005 20:38:45 GMT
> 主题: Re: PyGame and Rotozoom (Sorry if OT)
> 
> On 2005-05-20, J. W. McCall <[EMAIL PROTECTED]>
> wrote:
> > I'm not sure if this is off-topic, since it
> doesn't deal with Python 
> > itself, but here goes:
> >
> > I'm messing around with writing a simple "game"
> where the player (a 
> > crudely drawn smiley face) moves by rotating and
> moving back or forward 
> > (think Resident Evil, but from an always-above
> view).  After much 
> > hacking, I have it working where left and right
> rotate the player sprite 
> > and up always moves the sprite whichever direction
> it's facing, while 
> > down is reverse.  I'm using
> pygame.transform.RotoZoom().
> >
> > My problem is that it doesn't rotate smoothly. 
> When it rotates, the 
> > corners of the image (just a plain white
> background) look like they're 
> > hitting some barrier and making it move around. 
> Think of an empty box 
> > turned diagonally (so that it looks like a
> diamond, with its open end 
> > facing you), and a cube in that box being turned
> while it's resting in 
> > the bottom corner.  I want it to rotate smoothly
> around its center, it's 
> > it's not doing that.
> >
> > I'm guessing that it has something to do with me
> not setting up a Rect 
> > right, but I'm not sure.  Maybe this is a
> limitation of Rotozoom/Rotate?
> >
> > Any advice would be greatly appreciated.  And yes,
> I'm a rank PyGame newbie.
> >
> 
> 
> 
> You might want to try pygsear:
> http://www.nongnu.org/pygsear/
> 
> It has a RotatedImage class which takes care of
> rotating
> things for you. See the examples roti.py and
> wings.py
> for some use of rotated image sprites.
> 
> > 发件人: Jp Calderone <[EMAIL PROTECTED]>
> 收件人: python-list@python.org
> 日期: Fri, 20 May 2005 20:45:00 GMT
> 主题: Re: buffer_info error
> 
> On 20 May 2005 13:18:33 -0700, "[EMAIL PROTECTED]"
> <[EMAIL PROTECTED]> wrote:
> >i am filling in a packet with source and
> destination address and using
> >the buffer_info call to pass on the address to an
> underlying low level
> >call.
> >
> >The src and dest are strings, but buffer_info
> expects an array. How do
> >i deal with this?
> 
>   What's the low-level call you're invoking?
> 
>   Jp
> 
> > 发件人: [EMAIL PROTECTED] (Roy Smith)
> 收件人: python-list@python.org
> 日期: 20 May 2005 16:50:39 -0400
> 主题: Re: appending key-value pairs to a dict
> 
> rbt  <[EMAIL PROTECTED]> wrote:
> >I know how to setup an empty list and loop thru
> something... appending 
> >to the list on each loop... how does this work with
> dicts?
> >
> >I'm looping thru a list of files and I want to put
> the file's name and 
> >its sha hash into a dict on each loop.
> 
> You just assign values to keys.  If the key doesn't
> exist, it's
> created automagically.  You want something like
> this:
> 
> shaDict = {}
> for fileName in fileNameList:
>     hash = generateShaHash (fileName)
>     shaDict[hash] = fileName
> 
> > 发件人: Dave Brueck <[EMAIL PROTECTED]>
> 收件人: python-list@python.org
> 日期: Fri, 20 May 2005 15:07:05 -0600
> 主题: Re: Is Python suitable for a huge, enterprise
> size app?
> 
> Paul Rubin wrote:
> > Dave Brueck <[EMAIL PROTECTED]> writes:
> > 
> >>One thing from your experience that did resonate
> with me is that,
> >>except for ftplib and occasionally urllib (for
> basic, one-shot GETs),
> >>we don't use any of the standard library's
> "protocol" modules - partly
> >>because we had to implement our own HTTP libraries
> for performance and
> >>scalability reasons anyway, and partly because we
> had trouble figuring
> >>out e.g. all the ins and outs of
> urllib/urllib2/httplib.
> > 
> > 
> > What do you use for HTTPS?
> 
> Hi Paul,
> 
> m2crypto (plus some patches to make asynchronous SSL
> do what we needed).
> 
> > And did you use the Cookie module in your
> > HTTP servers?  You may have had problems without
> even being aware of
> > them (until recently if you used Cookie with its
> default settings, any
> > attacker could completely take over your server by
> sending you
> > carefully concoted cookies).
> 
> Are you referring to the use of pickle for cookie
> serialization? In any case, we 
> didn't use Cookie.py from the stdlib (on the
> servers, nearly everything related 
> to URLs & HTTP was custom-built, with the exception
> of urlparse, for the 
> aforemenioned reasons).
> 
> -Dave
> 
> > 发件人: John Abel <[EMAIL PROTECTED]>
> 抄送: python-list@python.org
> 日期: Fri, 20 May 2005 22:24:14 +0100
> 主题: Re: Process monitoring
> 
> gsteff wrote:
> 
> >Hey, I'm working on a Python program that will
> launch some other
> >non-Python process using os.spawn (in the
> os.P_NOWAIT mode) and then
> >basically wait for it to finish (while doing some
> other stuff in the
> >interim).  Normally, the new process will signal
> that it's done by
> >writing to a file, but I'd like to also find out if
> the new process
> >died unexpectedly.  Anyone know any preferrable
> ways to do this?
> >
> >Greg Steffensen
> >
> >  
> >
> If you're using 2.4, have a look at the subprocess
> module.
> 
> J
> 
> > -- 
> http://mail.python.org/mailman/listinfo/python-list
I am a beginner,Can you introduce some book about
python? I am a student of china

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