Re: Explanation of this Python language feature? [x for x in x for x in x] (to flatten a nested list)

> >>> x = [[1, 2], [3, 4]] > > >>> for x in x: > > ... for x in x: > > ... print(x) > This is valid in the syntax level in python. But it is only good for those writing obscure programs in my opinions at most team works. -- https://mail.python.org/mailman/listinfo/python-list

Re: CallBack function in C Libraries.

On Friday, March 21, 2014 7:56:43 AM UTC+8, fiens...@gmail.com wrote: > > Give the function call its required argument and the error will go > > > > > > away... well, at least that one. > > > > Yep, many thanks for the answer. > > But... im totally beginner with Python. > > I develop in Pa

Re: Python programming

On Thursday, February 13, 2014 11:30:27 PM UTC+8, Neil Cerutti wrote: > On 2014-02-12, Tim Delaney wrote: > > > OK - it's degenerated into one of these threads - I'm going to > > > participate. > > > > Me, too! > > > > I wrote lots of programs, strictly for fun, on every personal > > comp

Re: How security holes happen

On Wednesday, March 5, 2014 8:52:31 AM UTC+8, Andrew Cooper wrote: > On 03/03/2014 22:19, Cameron Simpson wrote: > > > On 03Mar2014 09:17, Neal Becker wrote: > > >> Charles R Harris Wrote in message: > > >>> > > >> > > >> Imo the lesson here is never write in low level c. Use modern > > >>

Re: Functional programming

On Monday, March 3, 2014 10:08:11 PM UTC+8, Rustom Mody wrote: > On Monday, March 3, 2014 7:30:17 PM UTC+5:30, Chris Angelico wrote: > > > On Tue, Mar 4, 2014 at 12:48 AM, Rustom Mody wrote: > > > > ? [1,2] + [[3,4],[5]] > > > > ERROR: Type error in application > > > > *** expression : [1,2

Re: Can tuples be replaced with lists all the time?

On Sunday, February 23, 2014 12:06:13 PM UTC+8, Sam wrote: > My understanding of Python tuples is that they are like immutable lists. If > this is the cause, why can't we replace tuples with lists all the time (just > don't reassign the lists)? Correct me if I am wrong. == OK, lets be seriou

Re: Commonly-used names in the Python standard library

On Friday, February 21, 2014 12:26:00 AM UTC+8, Marko Rauhamaa wrote: > Chris Angelico : > > > > > Also, what happens if two modules (one of which might be your script) > > > written for different versions both import some third module? Should > > > they get different versions, based on what v

Re: Calculator Problem

On Monday, February 3, 2014 5:16:44 AM UTC+8, Charlie Winn wrote: > Hey Guys i Need Help , When i run this program i get the 'None' Under the > program, see what i mean by just running it , can someone help me fix this > > > > def Addition(): > > print('Addition: What are two your numbers?

Re: Using a static library in a C extension for Python

On Thursday, January 23, 2014 3:22:52 AM UTC+8, lgabiot wrote: > Le 22/01/14 18:31, 88888 Dihedral a écrit : > > > > > > > > Check the C source code generated > > > by Pyrex and check cython for what u > > > want, but I did try that

Re: Using a static library in a C extension for Python

On Wednesday, January 22, 2014 7:01:50 PM UTC+8, lgabiot wrote: > Hello, > > > > working on OS X 10.8.5 > > Python 2.7 > > > > I've written a simple C extension for Python that uses the cairo graphic > > library. > > It works well, and I can call it from Python with no problem. > > The o

Re: SIngleton from __defaults__

On Thursday, January 23, 2014 12:37:36 AM UTC+8, Asaf Las wrote: > On Wednesday, January 22, 2014 6:18:57 PM UTC+2, Chris Angelico wrote: > > > On Thu, Jan 23, 2014 at 3:07 AM, Asaf Las wrote: > > > > > > Why not simply: > > > def get_singleton(x = SomeClass()): > > > return x > > > Or

Re: Editor for Python

On Friday, November 23, 2001 6:43:40 AM UTC+8, MANUEL FERNANDEZ PEREZ wrote: > Hello, > I'm looking for an editor for Python.I' m interested it works on Windows.Can > anybody help me? > > Thank you > > Manuel OK, try the notepad++ at notepad-plus-plus.org/ or use IDLE with the pycrust. -- ht

Re: Newbie question. Are those different objects ?

On Saturday, December 21, 2013 1:10:37 AM UTC+8, rusi wrote: > On Friday, December 20, 2013 9:30:22 PM UTC+5:30, Mark Lawrence wrote: > > > On 20/12/2013 15:34, rusi wrote: > > > > On Friday, December 20, 2013 8:46:31 PM UTC+5:30, dec...@msn.com wrote: > > > >> y = raw_input('Enter a number:') >

Re: [newbie] trying socket as a replacement for nc

> 88888 Dihedral wrote: > > > > > It is trivial to use UDP with > > > forward error correction such as > > > the CD in 1982. > > > > CD uses Reed-Solomon coding, which is great for correcting the types of > > errors exp

Re: Experiences/guidance on teaching Python as a first programming language

Roy Smith於 2013年12月19日星期四UTC+8下午12時16分26秒寫道： > In article <07c6e6a3-c5f4-4846-9551-434bdaba8...@googlegroups.com>, > > rusi wrote: > > > > > Soon the foo has to split into foo1.c and foo2.c. And suddenly you need to > > > understand: > > > > > > 1. Separate compilation > > > 2. Make (wh

Re: GUI:-please answer want to learn GUI programming in python , how should i proceed.

On Saturday, December 14, 2013 8:12:16 PM UTC+8, Jai wrote: > GUI:-want to learn GUI programming in python , how should i proceed. > > > > There are lots of book here so I am confuse which book i should refer so > that i don't waste time . please answer Please check JYTHON and those ready-

Re: [newbie] trying socket as a replacement for nc

On Friday, December 13, 2013 5:58:49 AM UTC+8, Chris Angelico wrote: > On Fri, Dec 13, 2013 at 8:27 AM, Dan Stromberg wrote: > > > On Thu, Dec 12, 2013 at 6:16 AM, Grant Edwards > > wrote: > > > > > >>> Sockets reserve the right to split one socket.send() into multiple > > >>> socket.recv()'

Re: Need Help with the BeautifulSoup problem, please

On Monday, December 16, 2013 2:41:08 PM UTC+8, seas...@gmail.com wrote: > I need to replace all tag with after ■. But the result from below > is '■ D / ' > > Can you explain what I did wrong, please. > > > > s = '■A B C D / ' > > soup = BeautifulSoup(s) > > for i in soup.find

Re: Languages for different purposes (was Re: New user's initial thoughts / criticisms of Python)

On Sunday, November 10, 2013 4:56:38 PM UTC+8, Jorgen Grahn wrote: > On Sun, 2013-11-10, Chris Angelico wrote: > > > On Sun, Nov 10, 2013 at 11:41 AM, Roy Smith wrote: > > >> On 09/11/2013 22:58, Chris Angelico wrote: > > >>> > > > >>> > * Some languages are just fundamentally bad. I do not re

Re: Show off your Python chops and compete with others

On Friday, November 8, 2013 3:02:10 AM UTC+8, jsk...@gmail.com wrote: > We do not currently support cookieless or javascript-less browsing. We are > definitely looking at relying less and less on cookies, but it's unlikely > we'll ever be able to pull out javascript as it limits interactivity too

Re: Basic Python Questions - Oct. 31, 2013

On Tuesday, November 5, 2013 1:22:05 PM UTC+8, E.D.G. wrote: > "Jim Gibson" wrote in message > > news:031120131018099327%jimsgib...@gmail.com... > > > > > One way to generate plot within a CGI program is this: > > > >To start off with, I am not a CGI expert. Also, I have several

Re: Hyper-spacial ray-tracer

On Saturday, October 5, 2013 8:17:52 AM UTC+8, Rouslan Korneychuk wrote: > On 10/04/2013 04:23 PM, Tony the Tiger wrote: > > > On Wed, 02 Oct 2013 17:05:32 -0400, Rouslan Korneychuk wrote: > > > > > >> game > > > > > > Sorry, but that sounds awful. I hate games. > > > > > > > This... isn't

Re: Tail recursion to while iteration in 2 easy steps

On Thursday, October 3, 2013 5:33:27 AM UTC+8, Terry Reedy wrote: > On 10/2/2013 8:31 AM, random...@fastmail.us wrote: > > > On Tue, Oct 1, 2013, at 17:30, Terry Reedy wrote: > > >> Part of the reason that Python does not do tail call optimization is > > >> that turning tail recursion into while

Re: class implementation

On Tuesday, October 1, 2013 3:34:08 AM UTC+8, Dave Angel wrote: > On 30/9/2013 08:41, markot...@gmail.com wrote: > > > > > under variables, i mean, the int's and lists and strings and floats that > > the parent class uses. IF in parent class there is variable called > > location, then can i us

Re: How to execute command on remote windows machine

gauran...@gmail.com於 2013年9月3日星期二UTC+8下午12時45分57秒寫道： > Hi Guys, > > > > I have a requirement where i need to kill one process on remote windows > machine. > > Following command just works fine if i have to kill process on local machine > > > > os.system('taskkill /f /im processName.exe')

Re: Encapsulation unpythonic?

Fabrice Pombet於 2013年8月31日星期六UTC+8上午1時43分28秒寫道： > On Saturday, August 17, 2013 2:26:32 PM UTC+2, Fernando Saldanha wrote: > > > I am new to Python, with experience in Java, C++ and R. > > > > > > > > > > > > As I understand encapsulation is not a big thing in the Python world. I > > read

Re: RE Module Performance

Devyn Collier Johnson於 2013年7月16日星期二UTC+8下午6時30分33秒寫道： > Am 07/12/2013 07:16 PM, schrieb MRAB: > > > On 12/07/2013 23:16, Tim Delaney wrote: > > >> On 13 July 2013 03:58, Devyn Collier Johnson > >> > wrote: > > >> > > >> > > >> Thanks for the thorough resp

Re: RE Module Performance

On Saturday, July 13, 2013 1:37:46 PM UTC+8, Steven D'Aprano wrote: > On Fri, 12 Jul 2013 13:58:29 -0400, Devyn Collier Johnson wrote: > > > > > I plan to spend some time optimizing the re.py module for Unix systems. > > > I would love to amp up my programs that use that module. > > > > In m

Re: ANN: psutil 1.0.0 released

Giampaolo Rodola'於 2013年7月11日星期四UTC+8下午11時02分01秒寫道： > > Congratulations on the 1.0.0 release! > > > > Thanks a lot. =) > > > > > Btw. any change you can put up a prebuilt installer for a 64-bit built > > > with Python 3.3? You have one for Python 3.2 > > > (http://code.google.com/p/psutil

Re: Stupid ways to spell simple code

Steven D'Aprano於 2013年7月2日星期二UTC+8上午6時09分18秒寫道： > On Mon, 01 Jul 2013 20:36:29 +0100, Marcin Szamotulski wrote: > > > > > Here is another example which I came across when playing with > > > generators, the first function is actually quite useful, the second > > > generator is the whole fun: >

Re: Problems with subclassing enum34

Thomas Heller於 2013年6月28日星期五UTC+8下午6時48分38秒寫道： > trying out the enum34 module. > > > > What I want to create is a subclass of enum.Enum that is also > > based on ctypes.c_int so that I can better use enum instances > > in ctypes api calls. > > > > When I do this, I get a metaclass conflict:

Re: FACTS: WHY THE PYTHON LANGUAGE FAILS.

Jason Friedman於 2013年6月28日星期五UTC+8上午11時52分33秒寫道： > > I was hoping to have a good laugh. :| > > > > > > > Although I wouldn't call it hostile. > > > > I think the python community is being educated in how to spam and troll at > the same time. > > > > It is possible the OP has a mental di

Re: Variables versus name bindings [Re: A certainl part of an if() structure never gets executed.]

Michael Torrie於 2013年6月20日星期四UTC+8下午2時01分11秒寫道： > > But since the LISP never really got a form beyond S-expressions, > > leaving us with lots of parenthesis everywhere, Python wins much as the > > Hitchhiker's Guide to the Galaxy wins. Yep, a list is mutable even it's empty. But constant integ

Re: Default Value

rusi於 2013年6月21日星期五UTC+8上午1時12分01秒寫道： > You know Rick, you are good at python, you are better at polemics. > > If only you would cut the crap I would (be able to) agree with you. > > See below > > > > On Jun 20, 7:49 pm, Rick Johnson wrote: > > > On Thursday, June 20, 2013 7:57:06 AM UTC-5,

Re: Listing modules from all installed packages

Carlos Nepomuceno於 2013年6月9日星期日UTC+8下午1時23分15秒寫道： > print '\n'.join([re.findall("from '(.*)'",str(v))[0] for k,v in > sys.modules.items() if str(v).find('from')>-1]) > > > > > Date: Sat, 8 Jun 2013 21:30:48 -0700 > > Subject: Listing modules from all installed packages > > From: jph...@gmail.co

Re: Python Magazine

Steven D'Aprano於 2013年5月26日星期日UTC+8上午11時50分31秒寫道： > On Sat, 25 May 2013 21:54:43 -0400, Roy Smith wrote: > > > > > Of course not every IPv6 endpoint will be able to talk to every other > > > IPv6 endpoint, even if the both have globally unique addresses. But, > > > the access controls will be

Re: Short-circuit Logic

Steven D'Aprano於 2013年5月30日星期四UTC+8上午10時28分57秒寫道： > On Wed, 29 May 2013 10:50:47 -0600, Ian Kelly wrote: > > > > > On Wed, May 29, 2013 at 8:33 AM, rusi wrote: > > >> 0.0 == 0.0 implies 5.4 == 5.4 > > >> is not a true statement is what (I think) Steven is saying. 0 (or if > > >> you prefer 0

Re: Future standard GUI library

Grant Edwards於 2013年5月29日星期三UTC+8上午2時25分08秒寫道： > On 2013-05-28, Wolfgang Keller wrote: > > > > > Actually productive work of significant intensity at a computer screen. > > > > Oh. You mean emacs. > > > > -- > > Grant Edwards grant.b.edwardsYow! Will it improve my

Re: Python #ifdef

Carlos Nepomuceno於 2013年5月29日星期三UTC+8上午3時46分37秒寫道： > Are there Python 'preprocessor directives'? > > I'd like to have something like '#ifdef' to mix code from Python 2 and 3 in a > single file. > > Is that possible? How? Use execfile(filename) at the beginning to get what you want. The .pyc ver

Re: Future standard GUI library

Chris Angelico於 2013年5月28日星期二UTC+8下午3時11分55秒寫道： > On Tue, May 28, 2013 at 9:10 AM, Roy Smith wrote: > > > In article , > > > Chris Angelico wrote: > > > > > >> I'll use XML when I have to, but if I'm inventing my own protocol, > > >> nope. There are just too many quirks with it. How do you

Re: PEP 378: Format Specifier for Thousands Separator

Carlos Nepomuceno於 2013年5月22日星期三UTC+8上午2時49分28秒寫道： > > > From: alyssonbr...@gmail.com > > Date: Tue, 21 May 2013 09:03:13 -0300 > > Subject: Re: PEP 378: Format Specifier for Thousands Separator > > To: python-list@python.org > > > > This work in 3.1+: > >

Re: PEP 378: Format Specifier for Thousands Separator

Carlos Nepomuceno於 2013年5月22日星期三UTC+8上午11時38分45秒寫道： > > > From: steve+comp.lang.pyt...@pearwood.info > > Subject: Re: PEP 378: Format Specifier for Thousands Separator > > Date: Wed, 22 May 2013 03:08:54 + > > To: python-list@python.org > [...] > >> So,

Re: @staticmethods called more than once

Ethan Furman於 2013年5月22日星期三UTC+8上午12時30分22秒寫道： > On 05/21/2013 08:39 AM, Skip Montanaro wrote: > > > Don't confuse the use of "static" in Python with its use in C/C++. From a > > post on StackOverflow: > > > > > > A staticmethod is a method that knows nothing about the class or > > instan

Re: Please help with Threading

Chris Angelico於 2013年5月20日星期一UTC+8下午5時09分13秒寫道： > On Mon, May 20, 2013 at 6:35 PM, Cameron Simpson wrote: > > > _lock = Lock() > > > > > > def lprint(*a, **kw): > > > global _lock > > > with _lock: > > > print(*a, **kw) > > > > > > and use lprint() everywhere? > > > >

Re: Python for philosophers

Chris Angelico於 2013年5月19日星期日UTC+8上午8時04分45秒寫道： > On Sun, May 19, 2013 at 9:56 AM, 88888 Dihedral > > wrote: > > > Hey, ChisA, are you delibrately to write a recursive version > > > to demonstrate the stack depth problem in Python? > > > > > >

Re: Python for philosophers

Chris Angelico於 2013年5月14日星期二UTC+8上午12時24分44秒寫道： > On Tue, May 14, 2013 at 12:53 AM, rusi wrote: > > > int fact(int n, int acc) > > > { > > > return !n? acc : fact(n-1,acc*n); > > > } > > > - > > > When I run these, the C happily keeps giving answers until a

Re: How to write fast into a file in python?

Steven D'Aprano於 2013年5月18日星期六UTC+8下午12時01分13秒寫道： > On Fri, 17 May 2013 21:18:15 +0300, Carlos Nepomuceno wrote: > > > > > I thought there would be a call to format method by "'%d\n' % i". It > > > seems the % operator is a lot faster than format. I just stopped using > > > it because I read i

Re: Back-end Python Developer Seeking Telecommute Work

Rob Sutton於 2013年5月18日星期六UTC+8上午2時36分07秒寫道： > I am seeking part/full time work as a back-end Python developer (telecommute > or Utah only). I have been maintaining a > Debian/Python/Django/Apache/PostgreSQL/PHP/MySql web application for 3 years > on my own. I do all the development, database a

Re: Python C-API: how to define nested classes?

Serge WEINSTOCK於 2013年5月16日星期四UTC+8下午4時55分07秒寫道： > Hi, > >   > > I'm currently writing a C extension module for python using the "raw" C-API. > I would like to be able to define "nested classes" like in the following > python code > >   > >

Re: Python's sad, unimaginative Enum

Chris Angelico於 2013年5月14日星期二UTC+8上午1時36分34秒寫道： > On Mon, May 13, 2013 at 8:17 PM, Steven D'Aprano > > wrote: > > > Let's look at his major criticisms: > > > > > > 1) values aren't automatically generated. > > > > > > True. So what? That is the *least* important part of enums. > > > > I s

Re: Append to python List

Chris Angelico於 2013年5月12日星期日UTC+8上午12時00分44秒寫道： > On Sun, May 12, 2013 at 1:47 AM, Anssi Saari wrote: > > > Chris Angelico writes: > > > > > >> On Thu, May 9, 2013 at 9:30 PM, Jussi Piitulainen > > >> wrote: > > >>> 8 Dihe

Re: Append to python List

Jussi Piitulainen於 2013年5月9日星期四UTC+8下午7時30分05秒寫道： > 88888 Dihedral writes: > > > > > This is just the handy style for a non-critical loop. > > > In a critical loop, the number of the total operation counts > > > does matter in the execution speed. >

Re: Append to python List

Jussi Piitulainen於 2013年5月9日星期四UTC+8下午2時55分20秒寫道： > RAHUL RAJ writes: > > > > > Checkout the following code: > > > > > > sample2 = [x+y for x in range(1,10) for y in range(1,10) if x!=y] > > > output=[] > > > output=[x for x in sample2 if x not in output] > > > > > > the output I get

Re: Why do Perl programmers make more money than Python programmers

Chris Angelico於 2013年5月7日星期二UTC+8下午9時32分55秒寫道： > On Tue, May 7, 2013 at 11:22 PM, jmfauth wrote: > > > There are plenty of good reasons to use Python. There are > > > also plenty of good reasons to not use (or now to drop) > > > Python and to realize that if you wish to process text > > > seri

Re: (Learner-here) Lists + Functions = headache

Bradley Wright於 2013年5月6日星期一UTC+8上午8時59分15秒寫道： > Hey guys and gals doing this tutorial(codecademy) and needed a bit help from > the experienced. > > > > I'm writing a function that takes a list(one they supply during runtime) > > here's what my function is supposed to do > > > > 1. for each

Re: Why do Perl programmers make more money than Python programmers

Steven D'Aprano於 2013年5月6日星期一UTC+8上午3時10分47秒寫道： > On Sun, 05 May 2013 12:11:11 -0500, Ignoramus16992 wrote: > > > > > According to CIO.com, Python programmers make only $83,000 per year, > > > while Perl programmers make $93,000 per year. > > > > > > http://www.cio.com/slideshow/detail/97819

Re: Can read in the BMP data correctly ,but the size is not right?

Jimmie He於 2013年4月30日星期二UTC+8上午1時20分49秒寫道： > I'm trying to read in the BMP data by the the code below,and I'm check the > data array with WINHEX,and it is correct,but which confuse me is why the size > is 0x180,but the actual picture should be 48*48 = 0x120 bytes because I use > 1-bit BMP not th

Re: epiphany

Roy Smith於 2013年4月25日星期四UTC+8上午7時50分33秒寫道： > I discovered something really neat today. > > > > We've got a system with a bunch of rules. Each rule is a method which > > returns True or False. At some point, we need to know if all the rules > > are True. Complicating things, not all the ru

Re: [Python-ideas] Automatic context managers

Chris Angelico於 2013年4月27日星期六UTC+8上午12時52分38秒寫道： > On Sat, Apr 27, 2013 at 1:54 AM, MRAB wrote: > > > On 26/04/2013 14:02, anatoly techtonik wrote: > > >> This circular reference problem is interesting. In object space it > > >> probably looks like a stellar detached from the visible (attached)

Re: Lists and arrays

Ana Dionísio於 2013年4月23日星期二UTC+8上午2時13分38秒寫道： > Hello! > > > > I need your help! > > > > I have an array and I need pick some data from that array and put it in a > list, for example: > > > > array= [a,b,c,1,2,3] > > > > list=array[0]+ array[3]+ array[4] > > > > list: [a,1,2] > >

Re: List Count

Blind Anagram於 2013年4月22日星期一UTC+8下午7時58分20秒寫道： > I would be grateful for any advice people can offer on the fastest way > > to count items in a sub-sequence of a large list. > > > > I have a list of boolean values that can contain many hundreds of > > millions of elements for which I want to c

Re: [TYPES] The type/object distinction and possible synthesis of OOP and imperative programming languages

Uday S Reddy於 2013年4月17日星期三UTC+8下午5時10分58秒寫道： > Mark Janssen writes: > > > > > > Having said that, theorists do want to unify concepts wherever possible > > > > and wherever they make sense. Imperative programming types, which I > > > > will call "storage types", are semantically the same as

Re: Is Unicode support so hard...

jmfauth於 2013年4月21日星期日UTC+8上午1時12分43秒寫道： > In a previous post, > > > > http://groups.google.com/group/comp.lang.python/browse_thread/thread/6aec70817705c226# > > , > > > > Chris “Kwpolska” Warrick wrote: > > > > “Is Unicode support so hard, especially in the 21st century?” > > > > -- >

Re: [TYPES] The type/object distinction and possible synthesis of OOP and imperative programming languages

Ned Batchelder於 2013年4月20日星期六UTC+8上午12時41分03秒寫道： > On 4/19/2013 12:16 PM, Steven D'Aprano wrote: > > > On Fri, 19 Apr 2013 12:02:00 -0400, Roy Smith wrote: > > > > > >> PS: a great C++ interview question is, "What's the difference between a > > >> class and a struct?" Amazing how few self-prof

Re: Atoms, Identifiers, and Primaries

Ian於 2013年4月17日星期三UTC+8下午3時21分00秒寫道： > On Tue, Apr 16, 2013 at 8:57 PM, Bruce McGoveran > > wrote: > > > These are terms that appear in section 5 (Expressions) of the Python online > > documentation. I'm having some trouble understanding what, precisely, > > these terms mean. I'd appreciate

Re: a couple of things I don't understand wrt lists

Serhiy Storchaka於 2013年4月17日星期三UTC+8下午5時35分07秒寫道： > 17.04.13 07:57, Larry Hudson написав(ла): > > > So using a list comprehension you can do it in two lines: > > > > > > def get_rule(num): > > > bs = bin(num)[2:] > > > return [0] * (8 - len(bs)) + [int(i) for i in bs] > > > > You

Re: The type/object distinction and possible synthesis of OOP and imperative programming languages

zipher於 2013年4月15日星期一UTC+8上午11時48分05秒寫道： > Hello, > > > > I'm new to the list and hoping this might be the right place to > > introduce something that has provoked a bit of an argument in my > > programming community. I'll state about my opinions about the imperative and non-imperative part.

Re: Threadpool item mailboxes design problem

Charles Hixson於 2013年4月15日星期一UTC+8上午7時12分11秒寫道： > What is the best approach to implementing actors that accept and post > > messages (and have no other external contacts). > > > > So far what I've come up with is something like: > > actors = {} > > mailboxs = {} > > > > Stuff actors w

Re: Functional vs. Object oriented API

David M Chess於 2013年4月12日星期五UTC+8下午11時37分28秒寫道： > > Roy Smith > > > > > > As part of our initial interview screen, we give > applicants some small > > > coding problems to do.  One of the things we see a lot is what > you could > > > call "Java code smell".  This is our clue that the > per

Re: shutil.copyfile is incomplete (truncated)

Steven D'Aprano於 2013年4月12日星期五UTC+8上午8時06分21秒寫道： > On Thu, 11 Apr 2013 19:55:53 +, Neil Cerutti wrote: > > > > > On 2013-04-11, Rob Schneider wrote: > > >> Thanks. Yes, there is a close function call before the copy is > > >> launched. No other writes. Does Python wait for file close com

Re: Help: pickle module unable to load "rb" mode files in linux

Surya Kasturi於 2013年4月2日星期二UTC+8下午10時54分25秒寫道： > Hi, hope you can help me on it.. > > > > with open(pickle_f, 'r') as fhand: >         obj = pickle.load(fhand) > > > > > This works on linux but not in windows until  I use "rb" mode while creating > file object. Surprisingly, the "rb" mode i

Re: Decorator help

Jason Swails於 2013年3月28日星期四UTC+8上午4時33分08秒寫道： > On Wed, Mar 27, 2013 at 3:49 PM, Joseph L. Casale > wrote: > > I have a class which sets up some class vars, then several methods that are > passed in data > > and do work referencing the class vars. > > > > > > I want to decorate these meth

Re: flaming vs accuracy [was Re: Performance of int/long in Python 3]

Chris Angelico於 2013年3月28日星期四UTC+8上午11時40分17秒寫道： > On Thu, Mar 28, 2013 at 2:18 PM, Ethan Furman wrote: > > > Has anybody else thought that [jmf's] last few responses are starting to > > sound > > > bot'ish? > > > > Yes, I did wonder. It's like he and Dihedral have been trading > > accounts

Re: free and nonlocal variables

bartolom...@gmail.com於 2013年3月21日星期四UTC+8下午4時52分17秒寫道： > In Python 3, "free variable" and "nonlocal variable" are synonym terms? Or is > there a difference, like "a free variable is a variable that is not a local > variable, then nonlocal variables and global variables are both free > variables"

Re: [Python-ideas] Message passing syntax for objects

zipher於 2013年3月19日星期二UTC+8上午1時04分36秒寫道： > On Sun, Mar 17, 2013 at 11:46 PM, Steven D'Aprano wrote: > > > I am very interested in this as a concept, although I must admit I'm not > > > entirely sure what you mean by it. I've read your comment on the link above, > > > and subsequent emails in thi

Re: Finding the Min for positive and negative in python 3.3 list

Wolfgang Maier於 2013年3月13日星期三UTC+8下午6時43分38秒寫道： > Steven D'Aprano pearwood.info> writes: > > > > > > > > On Tue, 12 Mar 2013 17:03:08 +, Norah Jones wrote: > > > > > > > For example: > > > > a=[-15,-30,-10,1,3,5] > > > > > > > > I want to find a negative and a positive minimum. >

Re: Reversing bits in a byte

Oscar Benjamin於 2013年3月12日星期二UTC+8下午11時44分50秒寫道： > On 12 March 2013 14:59, Oscar Benjamin wrote: > > > Numpy and matplotlib will do what you want: > > > > > > import numpy as np > > > import matplotlib.pyplot as plt > > > > > > def bits_to_ndarray(bits, shape): > > > abytes = np.frombuf

Re: Creating an object that can track when its attributes are modified

Ben Sizer於 2013年3月7日星期四UTC+8上午12時56分09秒寫道： > On Wednesday, 6 March 2013 16:22:56 UTC, Chris Angelico wrote: > > > > > > Effectively, you would need to have a > > > subclass of list/dict/tuple/whatever that can respond to the change. > > > > This is certainly something I'd be interested in

Re: Python script not working on windows 7 but works fine on linux

On Tuesday, March 5, 2013 3:20:28 AM UTC+8, ian douglas wrote: > On 03/04/2013 11:06 AM, io wrote: > > > esclusioni_file = open('/home/io/btc_trading/exclusions.txt','r') > > > > > > Windows error : > > > > > > Traceback (most recent call last): > > >File "C:\btc_trading\scripts > > > \i

Re: Why is it impossible to create a compiler than can compile Python to machinecode like C?

On Tuesday, March 5, 2013 6:55:06 AM UTC+8, CM wrote: > > The main issue is that python has dynamic typing.  The type of object > > > that is referenced by a particular name can vary, and there's no way > > > (in general) to know at compile time what the type of object "foo" is. > > > > > > Tha

Re: Why is it impossible to create a compiler than can compile Python to machinecode like C?

kramer65於 2013年3月1日星期五UTC+8上午4時25分07秒寫道： > Hello, > > > > I'm using Python for a while now and I love it. There is just one thing I > cannot understand. There are compilers for languages like C and C++. why is > it impossible to create a compiler that can compile Python code to > machinecode?

Re: Simulate Keyboard keypress Delay

DaGeek247於 2013年2月14日星期四UTC+8上午3時47分36秒寫道： > I am using the windows api feature getasynckeystate() to check the status of > every key pressed; like this; > > > > #always checking > > while(True): > > #iterate through list of ascii codes > > for num in range(0,127): > > #if a

Re: string.replace doesn't removes ":"

Rick Johnson於 2013年2月14日星期四UTC+8上午12時34分11秒寫道： > On Wednesday, February 13, 2013 1:10:14 AM UTC-6, jmfauth wrote: > > > > > > >>> d = {ord('a'): 'A', ord('b'): '2', ord('c'): 'C'} > > > >>> 'abcdefgabc'.translate(d) > > > 'A2CdefgA2C' > > > >>> > > > >>> > > > >>> def jmTranslate(s, table):

Re: Implicit conversion to boolean in if and while statements

Rick Johnson於 2013年2月13日星期三UTC+8上午1時48分07秒寫道： > On Monday, February 11, 2013 11:55:19 PM UTC-6, Chris Angelico wrote: > > > On Tue, Feb 12, 2013 at 12:06 PM, 88888 Dihedral wrote: > > > > A permanently mutated list is a tuple of constant objects. > > > > &

Re: Implicit conversion to boolean in if and while statements

Rick Johnson於 2013年2月11日星期一UTC+8下午9時13分58秒寫道： > On Monday, February 11, 2013 6:40:23 AM UTC-6, Chris Angelico wrote: > > > [...] > > > Or doing what you were pointing and laughing at Pike for, and using > > > two-symbol delimiters. You could even make it majorly logical: > > > > > > list_ = [

Re: LangWart: Method congestion from mutate multiplicty

Steven D'Aprano於 2013年2月9日星期六UTC+8上午11時36分52秒寫道： > Rick Johnson wrote: > > > > > The solution is simple. Do not offer the "copy-mutate" methods and force > > > all mutation to happen in-place: > > > > > > py> l = [1,2,3] > > > py> l.reverse > > > py> l > > > [3,2,1] > > > > > > If the

Re: advice, python for binary to xml

noydb於 2013年1月31日星期四UTC+8下午9時33分48秒寫道： > I'm looking for knowlegde about how best to go about converting a binary file > (from a GPS unit) to GPX/XML. I am completely clueless on this, so any > start-from-the-beginning info would be greatly appreciated! I'm guessing the > level of effort will

Re: Maximum Likelihood Estimation

在 2013年2月2日星期六UTC+8上午2时47分22秒，subhaba...@gmail.com写道： > On Friday, February 1, 2013 11:07:48 PM UTC+5:30, 88888 Dihedral wrote: > > > subhaba...@gmail.com於 2013年2月2日星期六UTC+8上午1時17分04秒寫道： > > > > > > > Dear Group, > > > > > > > >

Re: Maximum Likelihood Estimation

subhaba...@gmail.com於 2013年2月2日星期六UTC+8上午1時17分04秒寫道： > Dear Group, > > > > I am looking for a Python implementation of Maximum Likelihood Estimation. If > any one can kindly suggest. With a google search it seems > scipy,numpy,statsmodels have modules, but as I am not finding proper example >

Re: confusion with decorators

Jason Swails於 2013年1月31日星期四UTC+8上午8時34分03秒寫道： > Hello, > > > I was having some trouble understanding decorators and inheritance and all > that.  This is what I was trying to do: > > > > # untested > class A(object): >    def _protector_decorator(fcn): > >       def newfcn(self, *args, **kwar

Re: PyWart: Import resolution order

Ian於 2013年1月12日星期六UTC+8下午3時36分43秒寫道： > On Fri, Jan 11, 2013 at 10:28 PM, Rick Johnson > > wrote: > > > On Friday, January 11, 2013 12:30:27 AM UTC-6, Chris Angelico wrote: > > >> Why is it better to import from the current directory first? > > > > > > Opps. I was not explicit enough with my e

Re: PyWart: Module access syntax

Chris Angelico於 2013年1月12日星期六UTC+8下午12時40分36秒寫道： > On Sat, Jan 12, 2013 at 3:34 PM, Rick Johnson > > wrote: > > > *The problem:* > > > ... is readability. The current dot syntax used ubiquitously in paths is > > not conveying the proper information to the reader, and in-fact obfuscating > > t

Re: ANNOUNCE: Thesaurus - a recursive dictionary subclass using attributes

在 2013年1月10日星期四UTC+8下午7时34分23秒，Duncan Booth写道： > Dave Cinege wrote: > > > > > You will notice that the code is disgusting simple. However I have > > > found that this has completely changed the way I program in python. > > > I've re-written some exiting programs using Thesaurus, and often >

Re: How to call wget by python ?

Michael Torrie於 2013年1月10日星期四UTC+8上午11時04分31秒寫道： > On 01/09/2013 07:11 PM, iMath wrote: > > > can you give me an example code ? > > > > No but I can suggest some alternative ideas, such as using httplib > > (built into python), or libcurl. Or if you have to use wget, you run it > > the same

Re: Python programming philosophy

chaouche yacine於 2013年1月6日星期日UTC+8上午6時34分38秒寫道： > The compiler reads your source code and parses it into parse trees. This is > first step. It then takes the parse trees and transform them into abstract > syntax trees, which are like a DOM tree in an HTML file, and then transform > that AST into

Re: dict comprehension question.

On Tuesday, January 1, 2013 11:10:48 AM UTC+8, Steven D'Aprano wrote: > On Sat, 29 Dec 2012 18:56:57 -0500, Terry Reedy wrote: > > > > > On 12/29/2012 2:48 PM, Quint Rankid wrote: > > > > > >> Given a list like: > > >> w = [1, 2, 3, 1, 2, 4, 4, 5, 6, 1] > > >> I would like to be able to do

Re: father class name

On Monday, December 31, 2012 12:18:48 PM UTC+8, contro opinion wrote: > here is my haha  class > class  haha(object): >   def  theprint(self): >     print "i am here" > The definition of a class named haha. > >>> haha().theprint() > i am here > >>> haha(object).theprint() > Traceback (most recen

Re: Multi-dimensional list initialization

On Monday, November 5, 2012 3:07:12 PM UTC+8, Chris Rebert wrote: > On Sun, Nov 4, 2012 at 10:27 PM, Demian Brecht wrote: > > > So, here I was thinking "oh, this is a nice, easy way to initialize a 4D > > matrix" (running 2.7.3, non-core libs not allowed): > > > > > > m = [[None] * 4] * 4 This

Re: is implemented with id ?

On Wednesday, September 5, 2012 10:41:19 PM UTC+8, Steven D'Aprano wrote: > On Wed, 05 Sep 2012 10:00:09 -0400, Dave Angel wrote: > > > > > On 09/05/2012 09:19 AM, Franck Ditter wrote: > > >> Thanks to all, but : > > >> - I should have said that I work with Python 3. Does that matter ? - > >

Re: Negative array indicies and slice()

andrew...@gmail.com於 2012年10月29日星期一UTC+8上午11時12分11秒寫道： > The slice operator does not give any way (I can find!) to take slices from > negative to positive indexes, although the range is not empty, nor the > expected indexes out of range that I am supplying. > > > > Many programs that I write w

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