Re: [BangPypers] Welcome to the "BangPypers" mailing list
and strict action taken, including banning the poster's > email address. > > If you are posting a job opening, please prefix the message subject with > [JOB] or [JOBS]. If you are posting a training opportunity, please prefix the > subject with [Training]. For any genuine commercial message apart from these, > please prefix the subject with [Commercial]. > > > Please follow the guidelines to make your stay at BangPypers enjoyable and > fruitful to you and the community. > > Thank you, > > List Administrator(s) > > > > To post to this list, send your message to: > > bangpypers@python.org > > General information about the mailing list is at: > > https://mail.python.org/mailman/listinfo/bangpypers > > If you ever want to unsubscribe or change your options (eg, switch to or from > digest mode, change your password, etc.), visit your subscription page at: > > https://mail.python.org/mailman/options/bangpypers/bnayak%40icubecsi.com > > > You can also make such adjustments via email by sending a message to: > > bangpypers-requ...@python.org > > with the word `help' in the subject or body (don't include the quotes), and > you will get back a message with instructions. > > You must know your password to change your options (including changing the > password, itself) or to unsubscribe without confirmation. It is: > > sonusimmi > > Normally, Mailman will remind you of your python.org mailing list passwords > once every month, although you can disable this if you prefer. This reminder > will also include instructions on how to unsubscribe or change your account > options. There is also a button on your options page that will email your > current password to you. > ___ > BangPypers mailing list > BangPypers@python.org > https://mail.python.org/mailman/listinfo/bangpypers -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org https://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Do you pin your requirements.txt ?
Oh! Is that a big deal? Of course we pin our requirements (in all languages) and that's how it should be done. Otherwise you can't get repeatable builds. ~BG On Thu, Sep 12, 2013 at 5:45 PM, BibhasD wrote: > Quick googling suggests pinning = specifying versions. > > I do it. I think that makes more sense if you're depending on 3rd party > packages. > > -- > Bibhas > > On Thursday 12 September 2013 05:41 PM, Baishampayan Ghose wrote: >> What do you mean by "pin"? ~BG >> >> On Thu, Sep 12, 2013 at 5:37 PM, Shabda Raaj >> wrote: >>> Curious how many people are doing/not doing it. >>> >>> (We pin our requirements.txt). >>> >>> -- Thanks, Shabda >>> >>> Agiliq.com - Building Amazing Apps agiliq.com/blog/ | >>> github.com/agiliq US: +13152854388 | IN: +919949997612 | Skype: >>> shabda.raaj Our Android Apps >>> <https://play.google.com/store/apps/developer?id=Agiliq> | Our iOS >>> Apps <https://itunes.apple.com/us/artist/agiliq/id407918088> >>> ___ BangPypers mailing >>> list BangPypers@python.org >>> https://mail.python.org/mailman/listinfo/bangpypers >> >> >> > > > ___ > BangPypers mailing list > BangPypers@python.org > https://mail.python.org/mailman/listinfo/bangpypers -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org https://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Do you pin your requirements.txt ?
What do you mean by "pin"? ~BG On Thu, Sep 12, 2013 at 5:37 PM, Shabda Raaj wrote: > Curious how many people are doing/not doing it. > > (We pin our requirements.txt). > > -- > Thanks, > Shabda > > Agiliq.com - Building Amazing Apps > agiliq.com/blog/ | github.com/agiliq > US: +13152854388 | IN: +919949997612 | Skype: shabda.raaj > Our Android Apps <https://play.google.com/store/apps/developer?id=Agiliq> | > Our > iOS Apps <https://itunes.apple.com/us/artist/agiliq/id407918088> > ___ > BangPypers mailing list > BangPypers@python.org > https://mail.python.org/mailman/listinfo/bangpypers -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org https://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Listing files in a folder using python
I didn't read the whole PHP code, but I guess you are trying to scan a directory for files, etc. This can be accomplished using the os.walk function in Python - http://docs.python.org/2/library/os.html#os.walk Regards, BG On Tue, Feb 26, 2013 at 8:19 AM, T S KAMATH wrote: > as a newbie to python, I am looking for some advance examples for some > functions.. so that my learning curve is short.. > > I have used a code in php > http://www.php.net/manual/en/function.scandir.php#109115, which works fine, > > My question is can a similar featured listing be done in Python.. if you > could guide me it would be great.. > > > ___ > BangPypers mailing list > BangPypers@python.org > http://mail.python.org/mailman/listinfo/bangpypers -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Try Ninja IDE
> Heh, replies are not mandatory, I, for one, wasn't really holding my breath > to see a reply from you to Yoganand's email :) It's not about me here, it's about very basic mailing list etiquette. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Try Ninja IDE
Please provide links when talking about stuff. It's absurd to expect people to Google just to reply to the post. Regards, BG On Tue, Aug 21, 2012 at 7:19 PM, Yoganand Anandaraju wrote: > Try Ninja IDE. Its one of the best python IDE I have ever used. > > Regards, > Yoganand > ___ > BangPypers mailing list > BangPypers@python.org > http://mail.python.org/mailman/listinfo/bangpypers -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] [Inpycon] Sad demise of our dear KG (Keneth Gonsalvas)
:'( RIP Kenneth! It was great knowing you. Regards, BG On Fri, Aug 3, 2012 at 3:25 PM, JAGANADH G wrote: > Hi All, > > Just now I got a message that our dear KG (Kenneth Gonsalvas) passed away. > He was admitted in hospital due to Asthma attack and passed away today > morning. > Cremation will be held at ooty on 4th Aug 2012. > > -- > ** > JAGANADH G > http://jaganadhg.in > ILUGCBE > http://ilugcbe.org.in > > > ___ > Inpycon mailing list > inpy...@python.org > http://mail.python.org/mailman/listinfo/inpycon > -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] [JOB] Python/Django Internship position
On Mon, Jul 30, 2012 at 12:58 PM, Kiran Jonnalagadda wrote: > As the adage goes: > > Q: How do you know someone is from IIT or IIM? > A: They tell you. > > When I hear someone is from IIT or IIM, I instinctively ignore that person > because repeat experience has taught me to do so. These people tend to > believe that they are superior to everyone else because of where they > studied. Some of the most ruinous corporate decisions I've seen come from > IIT/IIM graduates who keep reminding everyone that they are IIT/IIM > graduates. > > This is of course not true for everyone, but there are enough of these > jokers going around that if you are serious about your startup, please do > not advertise your IIT/IIM background -- you will be ignored by the people > you really need to talk to. Couldn't agree more. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] [JOB] Python/Django Internship position
TL;DR - Ideas are dime a dozen (aka cheap), it's execution that matters. If an idea is ground-breaking yet indefensible, it's probably not worth guarding it closely in the first place because people will copy it the day you launch anyway. Paul Graham touched upon the topic briefly here http://www.paulgraham.com/start.html Regards, BG On Mon, Jul 30, 2012 at 12:12 PM, Sidu Ponnappa wrote: >> The idea is small and so we are not comfortable discussing this in open >> form yet. > I've been hiring long enough to know that unless the people you're > trying to engage with are kicked about the idea, they will never > apply. You are likely missing on the best devs by worrying about your > idea being hijacked. > > I've consciously avoided the "stealth mode" comfort zone quite happily > for many years now. There are more reasons why you should talk about > your idea in public, but someone beat me to blogging about it: > http://www.humbledmba.com/startups-in-stealth-mode-need-one-piece-of-ad -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] [JOB] Python/Django Internship position
On Fri, Jul 13, 2012 at 10:10 AM, Prashanth wrote: >> Looking for Fresh college graduates for Internship position at Noida. We >> are a internet based startup started by IIT, BITS alumnus. > > *sigh* one more of a keyword job posting. Do you think > you can get investor on board just by saying those keywords? If no, > how do you expect programmers to join you? How does your keywords > matter more than your idea and business model? It's not a business model, it's a way of life... :) Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Python script to limit access to Internet...
>> > but one thing, networks where you rely on the dhcp server on the >> > router are highly unsafe. Please avoid them. >> >> Why so? > > in the first place, these are setup by the 'technical' staff of the > service provider. The root password is usually root123, the firewall is > identical on all modems, the permissions are the widest possible and the > client machines are usually windows. I use this, but my machines are all > linux with proper firewalls, and I can see the sort of rubbish the > router lets in in the logs. True, but I am not sure how this is related to running the DHCP server on the router. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] JOB - Senior Web Developer - Talented Team!
>>>> > Ah well, that was supposed to go to the sender. My bad. Ignore it. >>>> >>>> welcome to the club >>>> >>> >>> Bad karma. I should set the return address for the group to the sender >>> perhaps :) >> >> [...] >> >> Please don't. >> >> A mail client should have some way of specifying "reply to sender" or >> "reply to reply-to address". > > Its not just the mail client's fault. If header munging in Mailman is > set it wont help what the client settings are. So for your suggestion > to work, this ML settings in Mailman for "Edit anonymous_list" and > header munging "Edit first_strip_reply_to" settings should be set to > NO and "reply_goes_to_list" must be set to go to the poster -- gmail's > web interface now automatically recognizes this feature. Earlier it > was not the case. People wanting to reply to the OP (or anyone else) in private is < 10% of the use-case. Such emails should either be composed separately or at least the person sending the email should verify that the mail is indeed going to the intended recipient. Let's not change the default setting to address a corner case. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] JOB - Senior Web Developer - Talented Team!
On Thu, Mar 15, 2012 at 11:08 PM, Anand Balachandran Pillai wrote: > Bad karma. I should set the return address for the group to the sender > perhaps :) No Anand, that's not what you should do IMHO. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] getpython3
>>> That is not the one I started, this is a new one from Jesse Noller. >>> getpython3.net I stopped as there was not any interest from the community. >>> If anyone want to take over it, I can give the domain and other details. >> >> May be you should just redirect getpython3.net to getpython3.com with a 301. > > Done. Awesome! Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] getpython3
> That is not the one I started, this is a new one from Jesse Noller. > getpython3.net I stopped as there was not any interest from the community. > If anyone want to take over it, I can give the domain and other details. May be you should just redirect getpython3.net to getpython3.com with a 301. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] re module help
On Mon, Jan 9, 2012 at 4:57 PM, Ganesh Kumar wrote: >> > I tried also subprocess module, But didn't got result, I tried the same >> > pattern. But didn't match the string over the stream. >> >> Are you sure you're getting the output from the command in your string? >> > > I got output from terminal command working fine Is your tool, writing to stdout or stderr? Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] golf problem
> a golf course has 18 holes. There are three types of hole - par 3, par 4 > and par 5. For a certain type of tournament it is necessary to generate > a random list of 6 holes. The only condition is that this list should > contain at least one of each type of hole. What would be an elegant way > of doing this. Sample data for Ooty golf course is given below. The hole > number is the first element of each tuple and the par is the second > element. This is my solution - http://dpaste.org/wrgG8/ Mine is similar to Gora's solution, except that I have tried to maintain the actual probabilities of each par in the course and minimise the number of passes through the list. It shouldn't matter much for a small list though. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Text/Mail filtering/classification using python
You need a Naive Bayes Classifier. Take a look at PyZor - http://sourceforge.net/apps/trac/pyzor/ Regards, BG On Fri, Dec 23, 2011 at 5:01 PM, Amit Sethi wrote: > Hi All, I am looking for a spam filtering/classification solution . > > The essential requirement are : > 1. Return a negative on all text with certain words. > > But apart from returning negative on certain words. I want it to be able to > classify certain positives. > > For ex - Given the fact that [Sachin, Cricket, Batsmen] are related to > cricket - returns a positive on cricket > Given the fact that [ Inflation, Share Price ] are related to Finance - > returns a positive on finance > > etc ... What kind of tool set/ library can help me achieve that ? > > -- > A-M-I-T S|S > ___ > BangPypers mailing list > BangPypers@python.org > http://mail.python.org/mailman/listinfo/bangpypers -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] webmail server
> On Wed, 2011-10-12 at 18:01 +0530, Baishampayan Ghose wrote: >> Lamson - http://lamsonproject.org/ > > sorry - wrong question - I meant webmail client - like openwebmail. PyWebmail? - http://code.google.com/p/webpymail/ Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] webmail server
Lamson - http://lamsonproject.org/ Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] [JOB] - Yahoo!
On Wed, Sep 14, 2011 at 5:30 PM, Kiran Jonnalagadda wrote: > +1. Censoring opinion does no one any good. I'm with Noufal and Roshan on > this thread. > > Public criticism can help companies get unstuck *really fast*, as I learnt > about Y! last month in a separate incident. If, as in this case, any company > wants to use a public resource to recruit, they should also be willing to > explain why they are a good place to work. This is a fair expectation for > their use of the resource. Instead, there's only been objection to criticism, > which makes the company look all the worse. +1 to Kiran and Noufal here. +1 Trillion to Roshan (of which a few Billions are just for the style). Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] [JOB] - Yahoo!
On Tue, Sep 13, 2011 at 2:14 PM, Senthil Kumaran wrote: > I agree that the email was misdirected and I had no issues with your > first question how it it was related with Python. Would have waited > for the OP to answer. > But that does not mean that we talk about business and ridicule a > company. That IMO does not make a healthy environment. In general, the posters of such emails will _never_ answer because they are not reading the list anyway. Even yesterday, someone sent a similar spam to the IPSS list. I sent a long email explaining why it's a malpractice and received an apology from the CEO. I am not sure if anyone from Y! will respond though... Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] if not with comparision statement in python
On Mon, Aug 1, 2011 at 5:09 PM, Anand Chitipothu wrote: >>> I also find map much more atomic and portable construct to think in - >>> after all every list comprehension is syntactic sugar around map + >>> filter, and map/reduce/filter are far more omnipresent than list >>> comprehensions. >> >> The above will especially make sense to someone who programs in >> multiple programming languages in his day job. > > I envy them. :) Why envy them when you can join them ;-) Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] if not with comparision statement in python
On Mon, Aug 1, 2011 at 4:38 PM, Dhananjay Nene wrote: > I also find map much more atomic and portable construct to think in - > after all every list comprehension is syntactic sugar around map + > filter, and map/reduce/filter are far more omnipresent than list > comprehensions. The above will especially make sense to someone who programs in multiple programming languages in his day job. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] parsing xml
On Fri, Jul 29, 2011 at 1:09 PM, Venkatraman S wrote: > IMHO, regexps are much more powerful and fault tolerant than XML parsing. > XMLs are brittle. Did you mean parsing XML using Regular Expressions is "more powerful and fault tolerant" than using a XML parser? Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] parsing xml
> minidom is the fastest solution if you consider the programmer time > instead of developer time. Minidom is available in standard library, > you don't have to add another dependency and worry about PyPI > downtimes and lxml compilations failures. FWIW, ElementTree is a part of the standard library as well and is known to be much better than minidom in various ways. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] parsing xml
> here is a simplified version of an xml file:
>
>
>
>
>
> CloudMade
>
> http://maps.cloudmade.com";>
>
>
> http://cloudmade.com/faq#license
>
> 2011-07-28T07:04:01
>
>
> 1489
> 344
> Sägerstraße
> Im Gisinger Feld
>
>
>
> I want to get the value of the distance element - 1489. What is the
> simplest way of doing this?
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from xml.etree.ElementTree import fromstring
data = """
CloudMade
http://maps.cloudmade.com";>
http://cloudmade.com/faq#license
2011-07-28T07:04:01
1489
344
Sägerstraße
Im Gisinger Feld
"""
def parse_xml(s):
element = fromstring(s)
return element.find("extensions/distance").text
if __name__ == "__main__":
print parse_xml(data)
Hope that helps.
Regards,
BG
--
Baishampayan Ghose
b.ghose at gmail.com
___
BangPypers mailing list
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Re: [BangPypers] [OT] language fanaticism
>> why ? any personal bad experience or some technical reasons? > > many bitter experiences - security is a nightmare for php apps. Take a > look at the number of security updates wordpress has per *month* - more > than django has had in 6 *years*. > > http://wordpress-security.net/wordpress-software-security-updates/ > <<<--- do you want to live on the edge like this? > > Most LUG sites run php, maintained by 'experts' - they are regularly > spammed or cracked even when the most draconian lockdown/captchas are > implemented. Volunteers just do not have the time to spend half their > nights applying security patches. > > Important note about updating Themes: > If you have made **any** changes to your theme (tweaking things in > style.css or changes to the template files), the changes will be > overwritten when the theme is updated. Be ready to re-do the changes > after updating. > > > what fun! I don't understand how Django apps can automatically guarantee a certain level of security while PHP applications can't. Are you trying to indicate that each and every Django app that you've built is free from any security hole? IMHO if an application is insecure, it's the programmer who is to blame and not the language/framework. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] [pythonpune] Cool developments on the PyPy front
Interesting, seems to be similar to Clojure's approach towards managing state. Regards, BG On Fri, Jul 1, 2011 at 2:15 AM, Dhananjay Nene wrote: > This is an informational post only. I've been watching some of the > performance developments on PyPy, but this one made me feel real good. > Apparently PyPy is going to lose the GIL and implement locking via STM > > http://morepypy.blogspot.com/2011/06/global-interpreter-lock-or-how-to-kill.html > -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Uninstalling Python 2.6
>> # update-alternatives --config python >> > Ganesh:~# update-alternatives --config python > update-alternatives: error: no alternatives for python. Hmm, in that case, you might need to do something like this but YMMV - # update-alternatives --install /usr/bin/python python /usr/bin/python2.6 1 # update-alternatives --install /usr/bin/python python /usr/bin/python2.5 10 # update-alternatives --config python I would recommend that you read the update-alternatives manual page before trying any of the above. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Uninstalling Python 2.6
> I want to remove Python 2.6 from my computer, or at least change the > default python to 2.5. When I try to remove Python 2.6 through the > package manager, it asks me if I want to remove about 200 other > things, which I don't want to do. Things that only support Python 2.5 > (like vim.. etc) try to use python 2.6 instead of python 2.5 by > default, which screws things up. How do I fix this? > > Note: I am trying with ubuntu-9.10(Karmic) You won't be able to remove python-2.6 because of dependencies, but you can install python-2.5 and make it the default by using the `update-alternatives` command (http://manpages.ubuntu.com/manpages/karmic/man8/update-alternatives.8.html). It would be something like (after installing python-2.5) - # update-alternatives --config python Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] remote ip change
>>> If you _want_ to involve python, then take a look at func. With Func, >>> changing the machine IP is just one of the many sysadmin tasks you'll >>> be able to perform. >> >> Do you have a URL Sriram? It sounds useful. > > https://fedorahosted.org/func/ Seems to be similar to Fabric [http://fabfile.org] but limited to administering Fedora machines. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] The myth of free software
On Wed, May 18, 2011 at 6:27 PM, Santosh Rajan wrote: > (FUNCTION TROLL > ((FUNCTION PRINT) > "Hello World"))) You clearly don't know enough Lisp to even craft a joke properly. Stick to what you know, that will suite you better. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] editor for restructured text
On Thu, Apr 28, 2011 at 12:55 PM, Noufal Ibrahim wrote: > Contrary to popular opinion, you *can* use Emacs as just a text editor > without buying into it's whole lispy philsophy. FWIW, only a small percentage of Emacs users buy into the "whole lispy philosophy". Nevertheless, the path to mastering Emacs does intersect with the path to mastering Lisp in some important places. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Broken pipe error
On Thu, Apr 14, 2011 at 3:21 PM, Amit Sethi wrote: > File "/usr/lib/python2.6/socket.py", line 286, in flush > self._sock.sendall(buffer) > error: [Errno 32] Broken pipe This happens when the request from the client (browser) is closed/interrupted. Sometimes this happens when you press the Esc key or move to another page before the original page has loaded completely. This is not a serious issue and you can ignore it safely. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Nice "feature"
On Fri, Apr 1, 2011 at 6:17 PM, Noufal Ibrahim wrote: > Came across this at PyCon. Comments? > >>>> foo = (1,[2,3,4]) >>>> foo[1] += [6] > Traceback (most recent call last): > File "", line 1, in > TypeError: 'tuple' object does not support item assignment >>>> foo > (1, [2, 3, 4, 6]) Even nicer this way - >>> foo = (1, [2, 3, 4]) >>> foo[1].append(5) >>> foo (1, [2, 3, 4, 5]) >>> foo[1].append(6) >>> foo (1, [2, 3, 4, 5, 6]) Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Dictionary in Python - A doubt
On Thu, Mar 24, 2011 at 5:34 PM, Jins Thomas wrote:
> My problem was to find the occurance of each word in a file
>
> f = open('hello.txt', 'r')
> count = {}
> for line in f:
> words = line.split()
> for i in words :
> if i in count:
> count[i] += 1
> else:
> count[i] = 1
> print (count)
>
> I was just comparing hash in Perl. In Perl 'if i in count: else:' statement
> is not required i could simply uses count{i} +=1 even if it exists or not
> exists. I was thinking why Python has put this restriction. Or is it
> something which i did wrongly.
Perl let's you do a += on a dictionary value because Perl is weakly
typed(?) and Python is not. To tell Python to assume that the default
value of your dictionary is an integer instead of anything else, you
will have to use `defaultdict`[1] which is a subclass of the built-in
Python dict. This is how you can use it -
count = defaultdict(int)
with open("hello.txt", "r") as f:
for line in f:
words = line.split()
for i in words:
count[i] += 1
print (count)
Hope this helps.
Regards,
BG
[1] http://docs.python.org/library/collections.html#collections.defaultdict
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Re: [BangPypers] Proposed python module: simpleoauth
> After getting very confused and frustrated at the state of OAuth libraries > in python, I decided that there needs to be a simpler way of doing OAuth in > Python. As a proof-of-concept I've implemented the following: > > https://github.com/ngkabra/simpleoauth Where is the code? simpleoauth/__init__.py seems to have only one line - "/home/navin/d/hacks/python/oauth/simple_oauth.py" Another thing, please sanitize the examples and remove your own API keys, they look real to me :) Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] indentation problems
> I have a problem - whenever I load the code written by a particular team > member indentation in many places vanishes. I have a feeling this has > something to do with tabs and spaces - anyone faced this problem? If a file has a mixture of tabs and spaces that can cause a lot of problems. Some editors can visually indicate if tabs and spaces are mixed in a file. You can use the tabnanny module to detect such files. $ python -m tabnanny # for a single file $ python -m tabnanny . # for all files in the current directory Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Ideas for Python concurrency...
> Mutliprocessing means, data copying, talking to each other through PIPES, > also it has its issues with running on Windows (all function calls should be > pickelable) > > Threads seems pretty stable on most platforms where Python runs. Threads won't help you much because of the Python GIL. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] [JOB] Python developer required in Pune with web development experience
>> I agree. That is indeed, one way of saying "the salary is negotiable". >> Having said that, I have never seen companies like Google, Facebook, >> etc. mention a pay range in job postings, > > google, facebook etc are the top range - it goes without saying that the > salaries will be far above industry standards. I am talking about our > local small start ups that no one has ever heard of. I have seen lot of > people who say 'we pay very well', but actually the end offer is often > peanuts. I personally always specify a maximum - that way every one > knows where they stand and people do not need to waste their time > applying for a job where the salary is not up to their expectations. > That said, the best candidates (as far as I am concerned) are those who > say that salary is not the main criterion - what work are you going to > give me? While I completely agree with you on this, just FYI, Google (US, don't know about India) pays considerably less than the industry standards but makes it up with the perks. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] [JOB] Python developer required in Pune with web development experience
>> > how much? I wonder why in India people never mention salary range. >> >> One reason for not stating the actual range and just saying "according >> to industry standards" is that there is no such thing as a "standard >> compensation". The actual pay differs with the person, the role & the >> company. Nevertheless, it's a nice way of saying "we won't >> short-change you". > > or a way of saying: 'there is going to be bargaining here'? I do not > know much about the software industry, but surely there must be an > approximate range - or at least a maximum that a company is willing to > shell out? I agree. That is indeed, one way of saying "the salary is negotiable". Having said that, I have never seen companies like Google, Facebook, etc. mention a pay range in job postings, but I guess people still get some idea about the salary range through various channels like glassdoor.com Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] [JOB] Python developer required in Pune with web development experience
>> This interesting job comes with industry competitive compensation. > > how much? I wonder why in India people never mention salary range. One reason for not stating the actual range and just saying "according to industry standards" is that there is no such thing as a "standard compensation". The actual pay differs with the person, the role & the company. Nevertheless, it's a nice way of saying "we won't short-change you". Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] refactoring
> [dubious aside: remember this one? > > There once was a master programmer who wrote unstructured programs. A novice > programmer, seeking to imitate him, also began to write unstructured > programs. When the novice asked the master to evaluate his progress, the > master criticized him for writing unstructured programs, saying, ``What is > appropriate for the master is not appropriate for the novice. You must > understand the Tao before transcending structure. http://www.canonical.org/~kragen/tao-of-programming.html for more koans like the one above. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] What kind of applications can we develop with Python
> one that I know of is flickr. About the power of the language there are > others on this list who can better articulate. Flickr is written in PHP. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Clojure style multimethod functions in python
>> Without making any change whatsoever to multi() and multi_method(),
> the result of the following code :
>
> # Declare the existence of a multi method switcher
> encounter = multi(lambda x,y : (x["Species"], y["Species"]))
>
> @multi_method(encounter, ("Bunny","Lion"))
> def encounter(a1, a2):
> return "run-away"
>
> @multi_method(encounter, ("Lion","Bunny"))
> def encounter(a1, a2):
> return "eat"
>
> @multi_method(encounter, ("Bunny","Bunny"))
> def encounter(a1, a2):
> return "mate"
>
> @multi_method(encounter, ("Lion","Lion"))
> def encounter(a1, a2):
> return "fight"
>
> b1 = {"Species" : "Bunny", "Other" : "Stuff"}
> b2 = {"Species" : "Bunny", "Other" : "Stuff"}
> l1 = {"Species" : "Lion", "Other" : "Stuff"}
> l2 = {"Species" : "Lion", "Other" : "Stuff"}
>
> print encounter(b1, b2)
> print encounter(b1, l1)
> print encounter(l1, b1)
> print encounter(l1, l2)
>
> *is
> *
> mate
> run-away
> eat
> fight
>
> Is that consistent with the expectations ?
Fair enough. Good work, Dhananjay.
Regards,
BG
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Re: [BangPypers] Clojure style multimethod functions in python
Dhananjay,
> Could you help explain in light of the following (the argument lists are in
> bold). The switcher function is provided exactly the same arguments as the
> various multimethods. Probably something about clojure I am not aware of ?
>
> Dhananjay
>
> def multi(switcher_func):
> """ Declares a multi map based method which will switch to the
> appropriate function based on the results of the switcher func"""
>
> def dispatcher(*args, **kwargs):
> key = *switcher_func(*args, **kwargs)*
> func = dispatcher.dispatch_map[key]
> if func :
> return *func(*args,**kwargs)*
> else :
> raise Exception("No function defined for dispatch key: %s" % key
> )
> dispatcher.dispatch_map = {}
> return dispatcher
Multimethods are supposed to dispatch on the ``value'' returned by the
dispatch function and not just when a specific condition is satisfied.
What will you do when there are multiple possibilities? Ideally, I
should be able to prefer a specific method to another one in case
there is some ambiguity. Yours will always pick the first one that
satisfies the condition, which is again dependent on the order in
which the code is evaluated.
For example, try implementing the following using your code -
http://clojure.org/runtime_polymorphism
Regards,
BG
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Re: [BangPypers] Clojure style multimethod functions in python
> While python's multimethod module allows function overloading based on > types, here's another approach to do the same based on a switching function > (clojure style) or on a set of conditions. > > Clojure style multimethod functions in > python<http://codeblog.dhananjaynene.com/2010/08/clojure-style-multi-methods-in-python/> Please don't claim that the above is `Clojure style multimethods'. Clojure multimethods can dispatch on an arbitrary function of `the arguments' given to the multimethod and not just on any arbitrary function of `the properties of the object'. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] source
> in using virtualenv and some other python programs I see the use of > 'source' - google search does not throw up anything useful. What is > 'source'? is it python or something else, and where can I get a link to > material on it? It's a shell built-in and is equivalent to `.'. http://www.gnu.org/software/bash/manual/bashref.html#Bourne-Shell-Builtins Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] python speed comparison
Emil,
> Below given is solution to a puzzle(
> http://projecteuler.net/index.php?section=problems&id=14) in python and c
>
> Python:
>
> import time
> startT=time.time()
> maxlen=0
> longest=0
> for i in xrange(1,100):
> last=i
> cnt=0
> while(last <> 1):
> cnt=cnt+1
> if(last%2==0):
> last=last/2
> else:
> last=3*last+1
> if(cnt>maxlen):
> maxlen=cnt
> longest=i
> print "time taken (sec) : ",time.time()-startT
> print maxlen,longest
>
> Python Output:
> time taken (sec) : 99.4702298641
> 524 837799
>
> C:
>
> #include
> int main(int argc, char **argv)
> {
> int longest = 0;
> int maxlen = 0;
> int i;
> unsigned long last;
> for (i = 1; i <= 100; i++)
> {
> last = i;
> int cnt = 0;
> while (last != 1)
> {
> cnt++;
> if (last % 2 == 0)
> last = last / 2;
> else
> last = 3 * last + 1;
> }
> if (cnt > maxlen)
> {
> maxlen = cnt;
> longest = i;
> }
> }
> printf("longest: %d (%d)\n", longest, maxlen);
> return 0;
> }
>
>
> My doubt is that in C the result comes in 1-2 sec but in python it takes 99
> secs.I don't expect python to be as fast as c but i cant understand why it
> should be so slow in python.i'm new to python so if there is better way to
> do the above prog in python please suggest.
Python is undoubtedly slower than C, more so when you use a naive
algorithm. Here is how I had solved this problem in Python on Jan,
2007 (had to really dig out the code from my archives) -
#!/usr/bin/env python
# Solution for problem #14 at Project Euler
# (http://projecteuler.net/index.php?section=problems&id=14)
# Author: Baishampayan Ghose
length = 0
max = 0
start = 1
def cycle(x):
''' Calculate the max cycle length,
ensuring that everything is < 1 million
'''
i = 1
while (x != 1):
if (x % 2 == 0):
x = x / 2
else:
x = 3*x + 1
i += 1
return i
for i in xrange(80, 84):
length = cycle(i)
if length > max:
max = length
start = i
print start
###
The above code gets the result in 1.7 seconds on my machine (the C
version takes 0.8 secs). The trick here was to calculate the range
properly, which you can arrive at by using some math.
Note that brute force approaches rarely work with project Euler
problems. There is most certainly some math involved somewhere which
can simplify your solution a lot.
Hope this helps.
Regards,
BG
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Re: [BangPypers] list problem
> For worst case and dataset in problem your script beats all. > For simple but large data it's Anand's solution just slightly ahead. > > Wow. Thanks for the info, Shekhar. I am happy :) Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] list problem
> Out of curiosity I tried benchmarking few of these solutions alongwith the > one I wrote using itertools.groupby. > My benchmarking did include large data sets and worst case. > Results are the shortest solution (by Anand) was way faster than others. > After that it was Steve's and mine and Navin was almost the same of the last > spot. > > Which one is most readable? Well I leave that for now. How did mine perform? Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] list problem
> Suppose you have the following list:
>
>>>> x =[['cat',10],['cat',20],['cat',30],['dog',5],['dog',1],['dog',3]]
>
> My problem is that i wish to obtain the following two dictionaries:
> xdictstart = {'cat':10, 'dog':1}
> xdictend = {'cat':30, 'dog':5}
>
> Any nice way to do the above? Thanks.
Don't know if this is nice, but I might want to solve this problem in
Python like this -
###
from collections import defaultdict
items = [['cat', 10], ['cat', 20], ['cat', 30], ['dog', 5], ['dog',
1], ['dog', 3]]
item_values = defaultdict(list) # this makes the values of this dict
lists by default
starts = {}
ends = {}
for k, v in items:
item_values[k].append(v)
for k in item_values:
starts[k] = min(item_values[k])
ends[k] = max(item_values[k])
print starts, ends
###
Feedback appreciated.
Regards,
BG
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Re: [BangPypers] Query generation engine/library
> I am looking for a a way to generate optimised queries in SQL (or > SQL-like languages like Hadoop Pig) by chaining clauses such as where, > group by, order by etc based on a set of (optimising) rules. Is there > any such library in python which would let me do that. Example > approach would be create a query object and then use some inbuilt > method to generate the actual query before executing it. > > I will probably have to change whatever alternatives are so a good > starting point would be helpful. Take something like Django's ORM or SQLAlchemy and hack it until you are satisfied :) Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Internationals getting Python/Programming Jobs
> You also get Fosters here :) [OT] May be it's not common knowledge here in India, but nobody drinks Foster's in Australia. Whatever we see in the ads here is all propaganda :) Having said that, I would recommend Rory to consider moving to Pune, India. It has the right blend of tech. community, peaceful life, work opportunities, infrastructure and nice weather. It's also cheaper than the so-called metro cities. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] How should I do it?
> It is a clever hack, taking advantage of the nature of the data. But > it is far more faster than the other approaches posted here. I thought eval was evil :) Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Why do indians copy?
>> >> I brought up the same topic a few months ago I think. Basically if you >> >> go to the Ruby forums >> > >> > no real programmer goes to forums - they use mailing lists and IRC >> >> Forums like say, http://stackoverflow.com/ ? > > havent come across that - but I some how do not like forums - something dozey > about them Stackoverflow is not really a forum, it's more like a community Q&A website. And yes, StackOverflow has more people who work on Windows technologies. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Why do indians copy?
> Why do indian programmers ask for code in Usenet (particularly Google > groups) ? Most Indian programmers were never supposed to be programmers. They simply lack the cognitive skills required to be in the business. Yet they are the ones who work for large/medium/small software service companies. So when they face a problem, they have absolutely no clue as to where to look for solutions. They also have no idea about the various programming communities and their modus operandi. They just join some random group and ask for solutions (it's akin to asking for some software in some shareware group). The problem is also inside the organisations; people who ask their seniors questions are deemed to be fools, etc. I think there is no solution to this specific problem. It's more of a culture issue. Unless and until parents let their children do whatever they want and the society treats people from all professions equally, people will keep flocking into the most fashionable profession of that decade. Computer programming is on its way out... management is much more fashionable now; the only difference is that a programmer's work revolves around the Internet and the Internet never forgets :) Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] [OT] Guido's Tweet on Top Posting
> why? in the first place I am extremely sensitive to top posting, but have > never > used usenet or been in a C forum. I only learned about interleaved posting in > about 2002 or so. And the vast majority of people online now have similar > experience to mine. And also the vast majority of top posters do so not out of Just because you came late does not mean you can't have the same sensibilities of the Usenet era. In short, many people who joined the mailing list bandwagon recently have learnt the right etiquette from others and by noticing how inline, contextual postings are much better than top posting. Others, unfortunately fail to accept it; they are simply too lazy to be courteous to others. I would blame the webmail clients for that though. They are simply not smart enough to put the cursor in the right place (which is below the quote). Thunderbird does that nicely. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] HTML Parsing in python
> Can anyone suggest me a good library for html parsing in python ? > I googled a found few libararies BeautifulSoup, HTMLParser, SGMLParser etc. > > Can anyone suggest me which should I go for from your experience. BeautifulSoup was OK, but now it's broken. Use lxml, it's very good. http://codespeak.net/lxml/ Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Any python metaclasses for UID
>> May be it was because of the way I quoted the mail. Sorry for the confusion >> :-p > > top posting almost invariably causes confusion - an excellent way of making > sure no one knows what you are talking about Hehe :) I for one merely wanted to add to Roshan's sentiment by drawing an analogy with the usual way in which Jon Harrop traumatises different mailing lists. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Any python metaclasses for UID
I didn't call _you_ Jo[h]n Harrop, man :) I called the OP a troll because his question is pretty much meaningless and is causing unnecessary irritation. May be it was because of the way I quoted the mail. Sorry for the confusion :-p Regards, BG On 7/30/09, Roshan Mathews wrote: > On Thu, Jul 30, 2009 at 1:43 AM, Baishampayan Ghose > wrote: >>> I think I just fell down the rabbit hole. >> >> I think BangPypers just got its own John Harrop. >> > Jon, I think you mean (although there is a John Harrop in the Clojure > community), in which case I'm guessing you're trying hard to say I'm > trolling (like the JH in comp.lang.lisp) ... except I wasn't, I just > wanted context. Something which Noufal seemed to pull out of thin > air. > > Roshan > ___ > BangPypers mailing list > BangPypers@python.org > http://mail.python.org/mailman/listinfo/bangpypers > -- Sent from my mobile device Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Any python metaclasses for UID
> I think I just fell down the rabbit hole. I think BangPypers just got its own John Harrop. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] CPython's 'bignum' Implementation
> Hey Guys, and especially Baishampayan, don't you think what you are > trying is against the spirit of the voting system. To quote me, "I would appreciate a few up-votes if you deem my answer to be satisfying". I never begged anyone to vote for me nevertheless. Asking someone to vote-up *if and only if* he is satisfied is not wrong, IMHO. I have been a part of SO for enough time to understand how it works. If anyone still feels that I am wrong, please feel free to take back your vote. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] CPython's 'bignum' Implementation
Amit, Thanks :) Since you are the one who asked the question, you can also accept my answer as the right answer for the question by clicking on the tick sign below the voting widget. Regards, BG On 5/18/09, Amit Saha wrote: > Hello Baishampayan, > > On Sat, May 16, 2009 at 1:13 AM, Baishampayan Ghose > wrote: >>> Now, how does CPython implement bignum? From what I gather, there is >>> more than way of doing it- using a different radix (base), an array >>> of numbers. One hint is given by >>> http://www.python.org/dev/peps/pep-0237/. However, if any of you folks >>> know something concrete, I would appreciate it. >> >> I have given a cursory glance to the Python code base and I think I >> know how it's implemented :) >> >> My findings are here - >> http://stackoverflow.com/questions/867393/how-do-languages-such-as-python-overcome-cs-integral-data-limits/870429#870429 >> >> I would appreciate a few up-votes if you deem my answer to be satisfying >> :-p > > I have given a +1 vote, I would have given one more, if SO allowed it. > But, Thanks! > > Best, > Amit > > -- > Journal: http://amitksaha.wordpress.com > IRC: cornucopic on #scheme, #lisp, #math, #linux > > "Recursion is the basic iteration mechanism in Scheme" > --- http://c2.com/cgi/wiki?TailRecursion > _______ > BangPypers mailing list > BangPypers@python.org > http://mail.python.org/mailman/listinfo/bangpypers > -- Sent from my mobile device Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] CPython's 'bignum' Implementation
> Now, how does CPython implement bignum? From what I gather, there is > more than way of doing it- using a different radix (base), an array > of numbers. One hint is given by > http://www.python.org/dev/peps/pep-0237/. However, if any of you folks > know something concrete, I would appreciate it. I have given a cursory glance to the Python code base and I think I know how it's implemented :) My findings are here - http://stackoverflow.com/questions/867393/how-do-languages-such-as-python-overcome-cs-integral-data-limits/870429#870429 I would appreciate a few up-votes if you deem my answer to be satisfying :-p Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Joins with Django
> I am trying to learn django and write a small application. I am facing issue > in executing a join with django. > I am able to find a work around by executing a raw SQL query using cursor. > But that have problem that I need to access fields using > "object.0' or 'object.1' which is too verbose and error prone. > > Is there better way of doing the same thing or executing joins using Django > models. > > here is my table structure > > table 1 : Company > id = IntField > name = CharField > > table 2 : Schmes > id = Int field > Name = CharFiled > comp_id = ForeignKey (company) > > table 3 : Price > > scheme_id = ForeignKey(Schemes) > price = CharField() > Date = DateTimeField() > > I want to execute a query on the price table where I can select the price of > all the schemes for the specified company. > > something like this if I write SQL : > > select price from Price, Schemes, Company where Price.scheme_id = Scheme.id > and Scheme.comp_id = Company.id and Company.id = 1. Puneet, Try something like this: company = Company.objects.get(name="foocorp") prices = Price.objects.filter(scheme_id__comp_id=company) You can use __ (double underscores) to span relationships. The Docs have more: http://docs.djangoproject.com/en/dev/topics/db/queries/#lookups-that-span-relationships Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Python Day India
>> IMO that is pure FUD... > > what exactly is FUD? Fear Uncertainty & Doubt. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] unladen-swallow
> Bingo! It seems like cPickle is fast until you play with something like a > recent version of simplejson...now that's fast. And then it's like, boy is > cPickle slow. Pretty soon you're jsonifying everything. :) And simplejson is fast until you play with cjson. Now _that_ is fast :) Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Cloud Camp at IIM Bangalore on March 29
> Would anyone be interested in Giving a talk on Google App-Engine ? I can talk on GAE. Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
Re: [BangPypers] Today's IRC meeting
> The meeting is planned for today at 9:00. Which channel & network? Regards, BG -- Baishampayan Ghose b.ghose at gmail.com ___ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
