--- [EMAIL PROTECTED]: > Send Python-list mailing list submissions to > python-list@python.org > > To subscribe or unsubscribe via the World Wide Web, > visit > http://mail.python.org/mailman/listinfo/python-list > or, via email, send a message with subject or body > 'help' to > [EMAIL PROTECTED] > > You can reach the person managing the list at > [EMAIL PROTECTED] > > When replying, please edit your Subject line so it > is more specific > than "Re: Contents of Python-list digest..." > > 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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