🌐 Mailman 3 November 2013 - Python-list - python.org

how to extract page-URL using BeautifulSoup
by bhaktanishant＠gmail.com Nov. 1, 2013

Nov. 1, 2013

I want to extract the page-url. for example: if i have this code import urllib2 from bs4 import BeautifulSoup link = "http://www.google.com" page = urllib2.urlopen(link).read() soup = BeautifulSoup(page) then i can extract title of page by: title = soup.title but i want to know that how to extract page-URL from "soup" that will be "http://www.google.com"

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Re: Help Python 3.3
by radu.bortoi＠gmail.com Nov. 1, 2013

Nov. 1, 2013

Thanks Zach.

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Re: Help Python 3.3
by radu.bortoi＠gmail.com Nov. 1, 2013

Nov. 1, 2013

On Friday, November 1, 2013 3:33:24 PM UTC+2, Zachary Ware wrote: > On Fri, Nov 1, 2013 at 8:20 AM, <radu.bortoi(a)gmail.com> wrote: > > > > > > Hi all, > > > > > > error: Setup script exited with error: Unable to find vcvarsall.bat > > > > > > Visual C++ Express installed. > > > > Which version? Python 3.3 requires Visual C++ 2010 (10.0). > > > > > the key HKEY_LOCAL_MACHINE\Software\Microsoft\VCExpress\9.0\Setup\VC\ProductDir > > > > This looks like Visual C++ 2008 (9.0). > > > > > is present and point to the vcvarsall.bat location. > > > PC restarted(just for fun). > > > > > > what is wrong?? > > > > I would have to guess that you've got the wrong version of Visual C++. > > You can install both 2008 and 2010 in parallel, if you need 2008 for > > something else. > > > > Hope this helps, > > > > -- > > Zach > > > > PS: In the future, it is very helpful to say which OS you're using > > since Python is usable on so many different platforms. In this case > > it's pretty obvious that you're using Windows, but there are still > > differences between Windows versions that mean knowing the version > > makes support easier.

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Testing python command line apps -- Running from within the projects w/o installing
by Göktuğ Kayaalp Nov. 1, 2013

Nov. 1, 2013

Hi all, I'm using python to write command line apps from time to time. I wonder *what is the conventional way to test-run these apps from within the project itself, while developing, without installing*. My usual practise is to have two entry points to the program as executable scripts. I usually put executables into a directory called `scripts/'. The source code of the program is organized into a package, and the package has an entry point which is a function that is passed the command line arguments (sys.argv[1:]). One of the scripts -- the one that will be installed -- assumes that the package is installed. It imports the entry function of the package and calls it: #!/usr/bin/env python3.3 from package.module import main import sys if __name__ == '__main__': exit(main(sys.argv[1:])) The other script is for running the version of the package that is currently being developed in the project directory. In that script, I manipulate sys.path to have the project root at the very front: #!/usr/bin/env python3.3 import sys import os sys.path.insert(0, os.path.join(os.path.realpath(".."), "sug/")) from package import module if __name__ == '__main__': exit(module.main(sys.argv[1:])) Even though I use virtualenvs for each project and have tests, I still want to run and see effects of my changes immediately and do not like to install the package every time I make a small change. I have surveyed most popular projects on Github, only to see nothing in common: some only have scripts like the first example, some use entry point attributes in setup.py, some have these scripts very deep in the package hierarchy etc. What is the `one true way' to achieve this? I want to emphasise that I do not want to have to install the package in order to be able to run the executable scripts. cheers, göktuğ

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Re: Python wart
by Peter Cacioppi Nov. 1, 2013

Nov. 1, 2013

Mark said : "Do I have to raise a PEP to get this stupid language changed so that it dynamically recognises what I want it to do and acts accordingly?" The printf syntax in C isn't any wonderful thing, and there is no obligation to provide some Python version of it. I have to say, there were a few things that twerked me when getting up to speed on Py, but formatting strings wasn't one of them. I'd be surprised if Guido prioritizes a fix for this part of his "stupid language". Just sayin

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Re: trying to strip out non ascii.. or rather convert non ascii
by Steven D'Aprano Nov. 1, 2013

Nov. 1, 2013

On Mon, 28 Oct 2013 09:23:41 -0500, Tim Chase wrote: > On 2013-10-28 07:01, wxjmfauth(a)gmail.com wrote: >>> Simply ignoring diactrics won't get you very far. >> >> Right. As an example, these four French words : cote, côte, coté, côté >> . > > Distinct words with distinct meanings, sure. > > But when a naïve (naive? ☺) person or one without the easy ability to > enter characters with diacritics searches for "cote", I want to return > possible matches containing any of your 4 examples. It's slightly > fuzzier if they search for "coté", in which case they may mean "coté" or > they might mean be unable to figure out how to add a hat and want to > type "côté". Though I'd rather get more results, even if it has some > that only match fuzzily. The right solution to that is to treat it no differently from other fuzzy searches. A good search engine should be tolerant of spelling errors and alternative spellings for any letter, not just those with diacritics. Ideally, a good search engine would successfully match all three of "naïve", "naive" and "niave", and it shouldn't rely on special handling of diacritics. -- Steven

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Re: Error Testing
by Grant Edwards Nov. 1, 2013

Nov. 1, 2013

On 2013-11-01, William Ray Wing <wrw(a)mac.com> wrote: > Actually, FORTRAN is probably responsible for more CPU cycles being > executed even today than most other languages. If you think about > the fact that most large scientific simulation codes (weather > forecasting, combustion modeling, finite-element modeling and so on), > are still FORTRAN based, and that those are the codes that occupy > multi-hundred-thousand-core petaflop class supper computers for weeks > on end, you have to respect its longevity. IIRC, some of the scientific computing libraries I used to use daily in Python data-crunching programs are still written in FORTRAN. -- Grant

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OT: Hierarchies [was Re: Possibly better loop construct, also labels+goto important and on the fly compiler idea.]
by Steven D'Aprano Nov. 1, 2013

Nov. 1, 2013

On Tue, 29 Oct 2013 17:22:03 +1100, Chris Angelico wrote: > On Tue, Oct 29, 2013 at 3:03 PM, <rurpy(a)yahoo.com> wrote: >> Regarding esr's "smart-questions", although I acknowledge it has useful >> advice, I have always found it elitist and abrasive. I wish someone >> would rewrite it without the "we are gods" attitude. > > I find it actually pretty appropriate. The attitude comes from a > hierarchy in which we are not at the top - but neither is esr. Hmmm, well it's not clear to me that ESR doesn't consider himself at the top of any hacker hierarchy. I'm sure that he considers that there are those who know more than him with respect to some specific technology or other, and I'm sure he doesn't think geeks fall into organisation charts with nice neat lines between those who report to whom. But I also think he doesn't have the false modesty to put himself anywhere but in the top "elite geek hacker" category. [...] > We're in a hierarchy (or actually > several independent and unrelated ones), and being at the top means (in > the open source world) being everyone's servant; and the people at the > top simply don't have time to be _everyone's_ servant personally, so > they need some sous-servants to help them to help people. An interesting thought, but I wouldn't put it that way. It seems to me that a better description would be that geeks tend to be big believers in "giving back", or perhaps something akin to "Whiteman's Burden" that Kipling believed in, the idea that those who have have a duty to those who don't. Of course, the whole colonialism thing is out of favour these days, and truth be told the idea of bringing "civilization to the savages" was more honoured in the breach than in the observance even in Kipling's day. But the idea that those who have more than others (be that skills, knowledge or possessions) have a duty towards those who don't is not a bad philosophy to live be. If we must have hierarchies -- and alas, Homo sapiens being as it is, we do -- it is better for those at the top to have a duty to serve as well as privileges. That's what Heinlein was getting at with the (often misunderstood) "Starship Troopers". Did it glorify military service? Yes it did, but it also emphasised the *service* part. If you want the privilege of citizenship, they you have to earn it by first serving. But I think that *servant* is not the right description for the relationship you are talking about. That implies that (say) I could demand ESR's service at any time, or at least at any time within pre- defined boundaries (even servants get days off), and that he would have no right to refuse service. But that's not the case. He is a volunteer who is free to say No at any time, and the quickest way to get him to say No would be to treat him as a servant. -- Steven

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Python wart
by Mark Lawrence Nov. 1, 2013

Nov. 1, 2013

Quite often I type this print('Total of accounts %.2f', total) when I meant to type this print('Total of accounts %.2f' % total) Do I have to raise a PEP to get this stupid language changed so that it dynamically recognises what I want it to do and acts accordingly? Yours most frustratedly. -- Python is the second best programming language in the world. But the best has yet to be invented. Christian Tismer Mark Lawrence

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Re: Error Testing
by rusi Nov. 1, 2013

Nov. 1, 2013

On Friday, November 1, 2013 8:55:03 AM UTC+5:30, Mark Lawrence wrote: > On 01/11/2013 02:27, William Ray Wing wrote: > > supper computers > Somebody must have tough teeth, though thinking about it I recall people > eating bicycles :) You just have to be sufficiently non-vegetarian http://en.wikipedia.org/wiki/DNA_computing

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