🌐 Mailman 3 September 2006 - Python-list - python.org

Re: Find the best price on gas in your local area for FREE....
by Diez B. Roggisch Sept. 2, 2006

Sept. 2, 2006

Sybren Stuvel schrieb: > highpayinghomejobs(a)yahoo.com enlightened us with: >> Visit the web site below to see where you can buy the cheapest gas >> in your local area. Just punch in your zip code and all the work is >> done for you. No Cost! Absolutely FREE info. > > Ehm... maybe you'd like to get your head out of your arse and stop > assuming that the USA is the entire world. Wait, their national baseball league championship is called world series. So he was pretty safe to assume that the US _are_ the entire world. SCNR & and no offense intended. Diez

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Re: Adding sender name to email
by Jorgen Grahn Sept. 2, 2006

Sept. 2, 2006

On Fri, 1 Sep 2006 11:51:55 +0100, Tim Williams <tim(a)tdw.net> wrote: ... > The smtp sender & recipients do not relate to the sender & recipients > in the email itself, Often they are the same, but they don't have to > be. To complicate things a bit more, using the term "sender" can invite confusion. There's a rarely-used "Sender" header for things like "Alice (sender) sent this message on behalf of Bob (from)". You're talking about the "From" header and SMTP MAIL FROM. /Jorgen -- // Jorgen Grahn <grahn@ Ph'nglui mglw'nafh Cthulhu \X/ snipabacken.dyndns.org> R'lyeh wgah'nagl fhtagn!

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Re: Netstat Speed
by Jorgen Grahn Sept. 2, 2006

Sept. 2, 2006

On Sat, 2 Sep 2006 13:22:59 +0200, Sybren Stuvel <sybrenUSE(a)YOURthirdtower.com.imagination> wrote: > DarkBlue enlightened us with: >> Following code works . > > No it doesn't - it's indented badly. I guess you mean something like: > > def activeip(checkip): > # if there is any line returned we set activeb to 1 indicating that > # this ip is active during a netstat run > activeb=0 > for line in os.popen("netstat -a -n | grep '%s'" % checkip) : > s=line > if s <>'' : > activeb=1 > return activeb > > Also try to use != instead of <>. Being equal or not has nothing to do > with being larger or smaller. Yeah, that took me a few seconds to mentally convert to !=. Personally, I'd just write "if line:" in this case. While we're at it, please write the documentation from a /user/ standpoint, not as internal scribblings. And don't call the address 'checkip' -- that makes it look like you pass a functor to the function. Maybe something like this: | def ip_is_active(addr): | """Return success if 'addr' shows up in the output from 'netstat -an'. | We assume that a suitable version of netstat exists. | """ | activeb=0 | ... This doc string is vague -- but that's because it's unclear what the function does and what you expect it to do. I see half a dozen problems or so, but that might be ok if its callers don't expect too much. /Jorgen -- // Jorgen Grahn <grahn@ Ph'nglui mglw'nafh Cthulhu \X/ snipabacken.dyndns.org> R'lyeh wgah'nagl fhtagn!

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Re: Netstat Speed
by Jorgen Grahn Sept. 2, 2006

Sept. 2, 2006

On Sat, 2 Sep 2006 13:22:59 +0200, Sybren Stuvel <sybrenUSE(a)YOURthirdtower.com.imagination> wrote: ... > def activeip(checkip): > # if there is any line returned we set activeb to 1 indicating that > # this ip is active during a netstat run > activeb = 0 > netstat = os.popen("netstat -a -n | grep '%s'" % checkip) > for line in netstat: > s = line > if s: > activeb = 1 > break > netstat.close() > return activeb > > Another way would be to let grep do the work for you. Pass it the '-q' > option and check its exit code. I suspect it's faster to skip the grep altogether and do the string search in Python. That also means you can drop the implicit shell invocation, and just exec netstat, period. No matter what, I think you'll find most of the wall time is spent starting netstat and having it wade through kernel statistics. /Jorgen -- // Jorgen Grahn <grahn@ Ph'nglui mglw'nafh Cthulhu \X/ snipabacken.dyndns.org> R'lyeh wgah'nagl fhtagn!

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Re: Threads and Progress Bar
by Bryan Olson Sept. 2, 2006

Sept. 2, 2006

Ritesh Raj Sarraf wrote: [...] > Here's the function, download_from_web() which calls the progress bar: > main.py > def download_from_web(sUrl, sFile, sSourceDir, checksum): [...] > temp = urllib2.urlopen(sUrl) > headers = temp.info() > size = int(headers['Content-Length']) > data = open(sFile,'wb') Incidentally, not all HTTP responses with bodies have a 'Content-Length' header. -- --Bryan

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Zipping Files to user defined Directory
by OriginalBrownster Sept. 2, 2006

Sept. 2, 2006

Hi There. I'm very new to python, and I have been using the TurboGears Framework to use python to power my application. I have a class which handles the upload of a file to a directory called "uploads", which is hosted on a server. my problems is that when I want to download that file from the server I want to zip the files selected. but how does a user specify where they want to save that file?. I the user will be selecting the files they want to download and I want to zip those files and let the user save it. I want to know how to let the user specify where to save the zipped files. Any ideas?..any python to help me do this?? i know i can use the zipfile module but I can't figure out the part about letting the user decide. Thank you Stephen Sandhu

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how to remove n bytes in a file?
by Dasn Sept. 2, 2006

Sept. 2, 2006

Hi. Suppose we have a very large file, and wanna remove 'n' bytes in the middle of the file. My thought is: 1, read() until we reach the bytes should be removed, and mark the position as 'pos'. 2, seek(tell() + n) bytes 3, read() until we reach the end of the file, into a variable, say 'a' 4, seek(pos) back to 'pos' 5, write(a) 6, truncate() If the file is really large, the performance may be a problem. Is there a clever way to finish? Could mmap() help? Thx

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thread join() not stopping
by mclaugb Sept. 2, 2006

Sept. 2, 2006

Here is a simple piece of thread code. When i add the print (or other) function into the run method--the thread fails to stop after 2 seconds which the join(2) should ensure. I have a function that I must have timeout and cannot figure a way to do this. Any help appreciated. Should compile on 2.4 Bryan import time from threading import Thread class MyThread(Thread): def __init__(self,mybignum): Thread.__init__(self) self.mybignum=mybignum def run(self): for l in range(10): for k in range(self.mybignum): res=0 for i in range(self.mybignum): res+=1 ######################################### print "not stopping" ########################################## def myadd_nothread(bignum): for l in range(10): for k in range(bignum): res=0 for i in range(bignum): res+=1 for l in range(10): for k in range(bignum): res=0 for i in range(bignum): res+=1 def thread_test(bignum): #We create 2 Thread objects for the 2 threads. thr1=MyThread(bignum) thr2=MyThread(bignum) thr1.start() thr2.start() thr1.join(2) thr2.join(2) def test(): bignum=150 #Let us test the threading part starttime=time.clock() thread_test(bignum) stoptime=time.clock() print "Running 2 threads took %.3f seconds" % (stoptime-starttime) #Now run without Threads. starttime=time.clock() myadd_nothread(bignum) stoptime=time.clock() print "Running Without Threads took %.3f seconds" % (stoptime-starttime) if __name__=="__main__": test()

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Re: how to remove n bytes in a file?
by Grant Edwards Sept. 2, 2006

Sept. 2, 2006

On 2006-09-02, Dasn <dasn(a)bluebottle.com> wrote: > Hi. > Suppose we have a very large file, and wanna remove 'n' bytes in the > middle of the file. My thought is: > 1, read() until we reach the bytes should be removed, and mark the > position as 'pos'. > 2, seek(tell() + n) bytes > 3, read() until we reach the end of the file, into a variable, say 'a' > 4, seek(pos) back to 'pos' > 5, write(a) > 6, truncate() > > If the file is really large, the performance may be a problem. > Is there a clever way to finish? Could mmap() help? Thx Instead of reading till the end of the file in step 3, do it a chunk at a time in a loop. -- Grant Edwards grante Yow! I'm gliding over a at NUCLEAR WASTE DUMP near visi.com ATLANTA, Georgia!!

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Re: disgrating a list
by Tal Einat Sept. 2, 2006

Sept. 2, 2006

Tim Chase wrote: > I'm not sure if '__iter__' is the right thing to be looking for, > but it seems to work at least for lists, sets, dictionarys (via > their keys), etc. I would use it because at least then you know > you can iterate over it AFAIK and as seen throughout posts on c.l.py, the best way to check if something is iterable is: try: iter(obj) except TypeError: <obj is not iterable> else: <obj is iterable> - Tal

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