On Wed, Feb 7, 2018 at 10:06 PM, Dhananjay wrote:
> Hello all,
>
> I have 3 points with coordinates (x0,y0,z0), (x1,y1,z1) and (x2,y2,z2).
> I also have a line joining points (x1,y1,z1) and (x2,y2,z2).
> For example,
> p0=[5.0, 5.0, 5.0]
> p1=[3.0, 3.0, 3.0]
> p2=[4.0, 4.0, 4.0]
>
> a = np.array(p
On Thu, Feb 8, 2018 at 4:15 AM, Peng Yu wrote:
> Hi,
>
> I see _sre.SRE_Match is returned by re.match. But I don't find where
> it is defined. Does anybody know how to get its help page within
> python command line? Thanks.
>
import re
m = re.match('a', 'abc')
print type(m)
>
On Thu, Feb 8, 2018 at 4:57 AM, wrote:
> On Wednesday, February 7, 2018 at 5:20:42 PM UTC, Chris Angelico wrote:
>> On Thu, Feb 8, 2018 at 4:15 AM, Peng Yu wrote:
>> > Hi,
>> >
>> > I see _sre.SRE_Match is returned by re.match. But I don't find where
>
On Fri, Feb 9, 2018 at 9:35 AM, wrote:
> On Sunday, February 4, 2018 at 12:15:16 AM UTC, pyotr filipivich wrote:
>
>> Those of us who do not use google-groups may not notice the loss
>> of the google groupies.
>> --
>> pyotr filipivich
>> Next month's Panel: Graft - Boon or blessing?
>
>
and you've
Surely you mean NNTP/Usenet client.
> access to hundreds of Python lists and thousands of other technical
> lists. I find the search facilities perfectly adequate.
>
--
Chris Green
·
--
https://mail.python.org/mailman/listinfo/python-list
Steven D'Aprano wrote:
> On Fri, 09 Feb 2018 12:45:29 +0000, Chris Green wrote:
>
> > Mark Lawrence wrote:
> [...]
> >> Please don't waste your time with the gmane website. Just point any
> >> (semi-)decent mail client like Thunderbird at news.gmane.o
vironment. If you can't
even ssh from work then you can always use an 'ssh from the web'
app from your wenb browser.
The newsreader I use is tin by the way.
--
Chris Green
·
--
https://mail.python.org/mailman/listinfo/python-list
On Sat, Feb 10, 2018 at 8:05 AM, wrote:
> On Friday, February 9, 2018 at 2:48:17 PM UTC-5, Chris Green wrote:
>> [email protected] wrote:
>> > On Saturday, February 3, 2018 at 7:15:16 PM UTC-5, pyotr filipivich wrote:
>> > > [snip]
>> > > Those
Michael F. Stemper wrote:
> On 2018-02-09 13:37, Chris Green wrote:
>
> > Alternative approach, what I do:-
> >
> > Run a text mode (but very capable and mouse aware) newsreader on
> > my home system, read news locally using that.
> >
> >
On Sun, Feb 11, 2018 at 8:52 AM, Chris Green wrote:
> Michael F. Stemper wrote:
>> On 2018-02-09 13:37, Chris Green wrote:
>>
>> > Alternative approach, what I do:-
>> >
>> > Run a text mode (but very capable and mouse aware) newsreader on
>>
On Wed, Feb 14, 2018 at 3:02 AM, Jason wrote:
> I have a variety of scripts that import some large libraries, and rather than
> create a million little scripts with specific imports, I'd like to so
> something like
>
> psycopg2 = ensure_imported (psycopg2)
>
> This way, regardless of invocation
On Wed, Feb 14, 2018 at 7:05 AM, Maroso Marco wrote:
> Hi,
>
> what i'm trying to do is develop my own email client, but a simple one.
>
> I just want it to connect to a specific email account and read the subject
> line of messages coming from a certain email address.
>
> I then want it to be ab
, you need to split it into lines, first stripping
whitespace (starts and ends with an empty line).
s = s.strip().replace("=",":")
print s
d = {}
for i in s.split('\n'):
try:
key, val = i.split(":")
d[key.strip()] = val.strip()
except ValueError:
print "no key:value pair found in", i
(PS. please switch to Python 3)
--
Chris Warrick <https://chriswarrick.com/>
PGP: 5EAAEA16
--
https://mail.python.org/mailman/listinfo/python-list
On Thu, Feb 15, 2018 at 2:40 PM, Oleg Korsak
wrote:
> Hi. While hearing about GIL every time... is there any real reason why CAS
> doesn't help to solve this problem?
>
> https://en.wikipedia.org/wiki/Compare-and-swap
Because the GIL is not a problem. It's a feature. Before you ask about
solution
On Fri, Feb 16, 2018 at 3:27 AM, Ned Batchelder wrote:
> On 2/15/18 9:35 AM, Chris Angelico wrote:
>>
>> On Thu, Feb 15, 2018 at 2:40 PM, Oleg Korsak
>> wrote:
>>>
>>> Hi. While hearing about GIL every time... is there any real reason why
>>
On Sat, Feb 17, 2018 at 9:18 AM, windhorn wrote:
> Yes, it's been covered, but not quite to my satisfaction.
>
> Here's an example simple script:
>
> # Very simple script
> bar = 123
>
> I save this as "foo.py" somewhere Python can find it
>
import foo
bar
> Traceback (most recent call l
On Sat, Feb 17, 2018 at 2:22 PM, boB Stepp wrote:
> This article is written by Nathan Murthy, a staff software engineer at
> Tesla. The article is found at:
> https://medium.com/@natemurthy/all-the-things-i-hate-about-python-5c5ff5fda95e
>
> Apparently he chose his article title as "click bait".
On Sat, Feb 17, 2018 at 2:50 PM, Bill wrote:
> boB Stepp wrote:
>>
>> This article is written by Nathan Murthy, a staff software engineer at
>> Tesla. The article is found at:
>>
>> https://medium.com/@natemurthy/all-the-things-i-hate-about-python-5c5ff5fda95e
>>
>> Apparently he chose his articl
On Sat, Feb 17, 2018 at 3:36 PM, Steven D'Aprano
wrote:
> Python is really good for gluing together high-performance but user- and
> programmer-hostile scientific libraries written in C and Fortran. You
> wouldn't write a serious, industrial-strength neural network in pure
> Python code and expect
On Sat, Feb 17, 2018 at 3:54 PM, boB Stepp wrote:
> On Fri, Feb 16, 2018 at 10:05 PM, Ben Finney
> wrote:
>
>> He blithely conflates “weakly typed” (Python objects are not weakly, but
>> very strongly typed) with “dynamically typed” (yes, Python's name
>> binding is dynamically typed). Those are
On Sat, Feb 17, 2018 at 4:15 PM, Wildman via Python-list
wrote:
> I have a bit of code I found on the web that will return
> the ip address of the named network interface. The code
> is for Python 2 and it runs fine. But, I want to use the
> code with Python 3. Below is the code followed by the
On Sat, Feb 17, 2018 at 4:11 PM, boB Stepp wrote:
> On Fri, Feb 16, 2018 at 10:25 PM, Chris Angelico wrote:
>
>>
>> 1) Type safety.
>>
>> This is often touted as a necessity for industrial-grade software. It
>> isn't...
>
> Chris, would you mind
On Sat, Feb 17, 2018 at 5:25 PM, boB Stepp wrote:
> I've just reread everyone's replies and one point you mentioned about
> the GIL caught my eye ...
>
> On Fri, Feb 16, 2018 at 11:16 PM, Chris Angelico wrote:
>
>> Asynchronicity and concurrency are hard. Gettin
On Sat, Feb 17, 2018 at 10:28 PM, Ben Bacarisse wrote:
> Marko Rauhamaa writes:
>
>> Many people think static typing is key to high quality. I tend to think
>> the reverse is true: the boilerplate of static typing hampers
>> expressivity so much that, on the net, quality suffers.
>
> I don't fin
On Sun, Feb 18, 2018 at 1:47 AM, Ian Kelly wrote:
> On Fri, Feb 16, 2018 at 9:32 PM, Chris Angelico wrote:
>> You'd be surprised how rarely that kind of performance even matters.
>> The author of that article cites C# as a superior language, but in the
>> rewrite from
On Sun, Feb 18, 2018 at 5:05 AM, Steven D'Aprano
wrote:
> On Sat, 17 Feb 2018 15:25:15 +1100, Chris Angelico wrote:
>
>> 1) Type safety.
>>
>> This is often touted as a necessity for industrial-grade software. It
>> isn't. There are many things that a typ
On Sun, Feb 18, 2018 at 8:50 AM, bartc wrote:
> On 17/02/2018 20:11, Chris Angelico wrote:
>>
>> On Sun, Feb 18, 2018 at 1:47 AM, Ian Kelly wrote:
>
>
>>> Okay, I'm curious. How did C# force you to make extra HTTP requests
>>> that were no longer neces
On Sun, Feb 18, 2018 at 11:13 AM, bartc wrote:
> On 17/02/2018 22:09, Chris Angelico wrote:
>>
>> On Sun, Feb 18, 2018 at 8:50 AM, bartc wrote:
>
>
>>> That's a very interesting observation.
>>>
>>> I've frequently made the complaint ab
On Sun, Feb 18, 2018 at 12:31 PM, bartc wrote:
> On 18/02/2018 00:45, Chris Angelico wrote:
>>
>> On Sun, Feb 18, 2018 at 11:13 AM, bartc wrote:
>
>
>> It's text, but it is an intermediate or "object" file. It's not doing
>> pointless stuf
TP<->mailing-list gateway
> continue to work -- until tonight. Now the domain is gone. Perhaps
> it's just an oversight, but I've got a bad feeling...
>
I think it was a short term hiccough, a posting of mine got bounced
yesterday but subsequent ones worked OK.
--
On Sun, Feb 18, 2018 at 4:35 AM, Wildman via Python-list
wrote:
> Thanks to Chris and Ben. Your suggestions were slightly
> different but both worked equally well, although I don't
> understand how that can be so.
>
>> struct.pack('256s', ifname[:15].enco
Does anyone have experience with running Python scripts on Android
phones? I have a brother (honestly! I'm not actually using a phone
myself!) who's trying to run one of my scripts in QPython, which
claims to be version 3.2.2. I think that really truly is a Python 3.2
implementation - probing for n
ting a
> server from scratch wouldn't be too bad, either.
>
> However, the simplest way forward might be to just take an off-the-shelf
> NNTP server and write a IMAP/NNTP gateway bot that acts as a client
> bothways. Then you can use Python's nntplib and imaplib.
>
L
Grant Edwards wrote:
> On 2018-02-18, Chris Green wrote:
> > Grant Edwards wrote:
> >> I've been dreading this moment for a couple years: it looks like
> >> gmane.org is gone. The original operator/maintainer gave up a couple
> >> years ago and pulled
On Mon, Feb 19, 2018 at 1:14 PM, bartc wrote:
> On 19/02/2018 00:09, Steven D'Aprano wrote:
>
>> Sure, but only the most boring, uninteresting kinds of types can be so
>> named. The point is that "sufficiently fine-grained types" can be
>> arbitrarily complex.
>
>
> I don't think so.
>
> If a hum
On Mon, Feb 19, 2018 at 7:40 PM, Alain Ketterlin
wrote:
> Tim Delaney writes:
>> C is statically and weakly typed. Variables know their types at compile
>> time (static typing). It is a feature of the language that you can cast any
>> pointer to any chunk of memory to be a pointer to any other ty
On Mon, Feb 19, 2018 at 8:36 PM, Antoon Pardon wrote:
> On 17-02-18 21:11, Chris Angelico wrote:
>> On Sun, Feb 18, 2018 at 1:47 AM, Ian Kelly wrote:
>>> On Fri, Feb 16, 2018 at 9:32 PM, Chris Angelico wrote:
>>>> You'd be surprised how rarely that kind of
On Mon, Feb 19, 2018 at 9:04 PM, Alain Ketterlin
wrote:
> Chris Angelico writes:
>
>> On Mon, Feb 19, 2018 at 7:40 PM, Alain Ketterlin
>> wrote:
>
>>> No. C has much stronger rules, not on casting, but on accessing the
>>> pointees, which basically in
On Mon, Feb 19, 2018 at 9:24 PM, Steven D'Aprano
wrote:
> On Mon, 19 Feb 2018 09:40:09 +0100, Alain Ketterlin wrote:
>
>> Tim Delaney writes:
>>
>> [...]
>>> As others have said, typing is about how the underlying memory is
>>> treated.
>>
>> No. It is much more than that. Typing is about everyth
On Mon, Feb 19, 2018 at 10:39 PM, Adriaan Renting wrote:
> I remember running 2 Mendocino 300 MHz Celerons on a Pentium II Xeon
> motherboard to get a
> multi-cpu machine for running multiple virtual machines for testing
> purposes around 1998.
> This was not as Intel intended, but a quite cheap c
On Mon, Feb 19, 2018 at 11:32 PM, Rhodri James wrote:
> On 18/02/18 16:18, Wildman via Python-list wrote:
>>>
>>> But that's only going to show one (uplink) address. If I needed to get
>>> ALL addresses for ALL network adapters, I'd either look for a library,
>>> and if one wasn't easily found, I'
On Tue, Feb 20, 2018 at 12:34 AM, Steven D'Aprano
wrote:
> On Mon, 19 Feb 2018 20:14:32 +1100, Chris Angelico wrote:
>
>> As an integer, 3.141590 is 107853 $
>>
>> Looks to me like C is perfectly happy to interpret a float as an int.
>
> Yes, but that'
On Mon, Feb 19, 2018 at 11:35 PM, bartc wrote:
> Sometimes, the reason for creating a special numerical type is precisely so
> you can't do arithmetic on them, if it's not meaningful for the type.
>
> So the special type of the values 65..90 might not allow the type be
> multiplied or divided, or
On Tue, Feb 20, 2018 at 3:49 AM, Wildman via Python-list
wrote:
> On Mon, 19 Feb 2018 12:32:49 +, Rhodri James wrote:
>
>> On 18/02/18 16:18, Wildman via Python-list wrote:
But that's only going to show one (uplink) address. If I needed to get
ALL addresses for ALL network adapters,
On Tue, Feb 20, 2018 at 3:53 AM, Wildman via Python-list
wrote:
> On Tue, 20 Feb 2018 02:26:19 +1100, Chris Angelico wrote:
>
>> * Opaque IOCTLs
>
> Would you mind to elaborate a little about your
> concerns?
Look at your original code: it's impossible to figure out
On Tue, Feb 20, 2018 at 8:45 AM, Beppe wrote:
>
> Biovarase has been updated to version 2,
>
> The project has been migrated from python 2.7 to python 3.5
>
> Biovarase is an application to manage clinical quality control data.
>
> The purpose of Quality Control Assurance in a clinical laboratory
On Tue, Feb 20, 2018 at 8:07 AM, Jason Qian via Python-list
wrote:
> Hi,
>
> I am calling python from a c application.
> It compiles and works fine on the windows. How do I compile and link
> it on the linux for Python 3.6.4 ?
>
> Under python dir, it only have a static librar
On Tue, Feb 20, 2018 at 10:09 AM, Wildman via Python-list
wrote:
> Yes, you are correct. Third-party pip packages are always
> a no-no.
>
> Speaking of which, there is a library called Netifaces that
> will easily do exactly what I want with a few lines of code.
> But, it is not to be found in an
On Tue, Feb 20, 2018 at 12:05 PM, Wildman via Python-list
wrote:
> On Tue, 20 Feb 2018 10:55:28 +1100, Chris Angelico wrote:
>
>> The given homepage URL is
>> http://alastairs-place.net/projects/netifaces/ - is that the right
>> one?
>>
>> ChrisA
>
> Yes,
On Mon, Feb 19, 2018 at 3:57 AM, Johannes Findeisen wrote:
> On Sun, 18 Feb 2018 20:57:02 +1100
> Chris Angelico wrote:
>
>> Does anyone have experience with running Python scripts on Android
>> phones? I have a brother (honestly! I'm not actually using a phone
>>
On Wed, Feb 21, 2018 at 12:38 AM, Antoon Pardon wrote:
> Why should this be done at compile time? I say a static language can do
> the same as a dynamic language and your counter point is to ask for how
> that static language can do something extra.
>
> The point I am making is that you claim dyna
On Wed, Feb 21, 2018 at 12:53 AM, Antoon Pardon wrote:
> In C++ I can do something like:
>
> SomeClass MyVar;
>
> And after that the kind of possible assignments to MyVar are constraint. It
> makes the runtime throw an error when somewhere the program tries to assign
> something to MyVar that is
On Wed, Feb 21, 2018 at 7:42 AM, Rick Johnson
wrote:
> On Tuesday, February 20, 2018 at 2:18:31 PM UTC-6, MRAB wrote:
>
>> The point he was making is that if you store a person's age, you'd have
>> to update it every year. It's far better to store the date of birth and
>> calculate the age on dema
On Wed, Feb 21, 2018 at 9:01 AM, Rick Johnson
wrote:
> On Tuesday, February 20, 2018 at 2:51:56 PM UTC-6, Chris Angelico wrote:
> [...]
>> Nope. Even if you need the age many times per second, it's still
>> better to store the date of birth, because you eliminate bou
On Wed, Feb 21, 2018 at 6:39 AM, Geldenhuys, J, Prof
wrote:
> I think your case illustrates the Python/Mathematica issue well: you found a
> job for which Mathematica was not the perfect tool and you used Python. At
> the end of the day, both M & P have their place. For example, we probably
On Wed, Feb 21, 2018 at 4:44 PM, Abdur-Rahmaan Janhangeer
wrote:
> here is a kivy launcher tutorial i once wrote :
> https://wp.me/p7UB6x-kB
>
Thanks. I'm currently a dozen or so tabs deep into learning Kivy, and
am just starting to get to looking into launchers.
ChrisA
--
https://mail.python.o
On Wed, Feb 21, 2018 at 9:04 PM, Steven D'Aprano
wrote:
> On Wed, 21 Feb 2018 04:13:56 -0500, Etienne Robillard wrote:
>
>> Hi,
>>
>> Would it be possible to build a Python to Julia code generator??
>>
>> i'm interested to learn Julia and would love to have the capacity to
>> embed or run native P
On Wed, Feb 21, 2018 at 10:11 AM, Johannes Findeisen wrote:
> Don't know which Python version is included in Kivy Launcher and believe
> it is 2.7. but it think Kivy will go over to Python 3.* in the near
> future.
>
Well... after an insane number of attempts, most of which were at
least partiall
On Thu, Feb 22, 2018 at 5:27 PM, Larry Martell wrote:
> I want to use the atws package
> (https://atws.readthedocs.io/readme.html). I am using python 2.7.6 on
> ubuntu-trusty-64 3.13.0-87-generic. I get this error when importing
> the package:
>
import atws
> Traceback (most recent call last)
On Thu, Feb 22, 2018 at 11:03 PM, bartc wrote:
> On 22/02/2018 10:59, Steven D'Aprano wrote:
>>
>>
>> https://www.ibm.com/developerworks/community/blogs/jfp/entry/Python_Meets_Julia_Micro_Performance?lang=en
>
>
> While an interesting article on speed-up techniques, that seems to miss the
> point
On Fri, Feb 23, 2018 at 2:06 AM, Larry Martell wrote:
> On Thu, Feb 22, 2018 at 2:00 AM, Chris Angelico wrote:
>> For reference, here's the version of requests that I have (which does
>> have that exception available):
>>
>>>>> import requests
>>&g
On Fri, Feb 23, 2018 at 12:51 AM, Serhiy Storchaka wrote:
> 22.02.18 14:29, Chris Angelico пише:
>>
>> Not overly misleading; the point of it is to show how trivially easy
>> it is to memoize a function in Python. For a fair comparison, I'd like
>> to see the equ
On Fri, Feb 23, 2018 at 2:15 AM, ast wrote:
> Le 22/02/2018 à 13:03, bartc a écrit :
>>
>> On 22/02/2018 10:59, Steven D'Aprano wrote:
>>>
>>>
>>> https://www.ibm.com/developerworks/community/blogs/jfp/entry/Python_Meets_Julia_Micro_Performance?lang=en
>>
>>
>> While an interesting article on spee
On Fri, Feb 23, 2018 at 3:00 AM, Steven D'Aprano
wrote:
> On Thu, 22 Feb 2018 12:03:09 +, bartc wrote:
>> Here's another speed-up I found myself, although it was only 50 times
>> faster, not 17,000: just write the code in C, and call it via
>> os.system("fib.exe").
>
> Did you include the time
On Fri, Feb 23, 2018 at 11:31 AM, Steven D'Aprano
wrote:
> Big O analysis is never a substitute for actual timing measurements, and
> the assumption behind Big O analysis, namely that only some operations
> take time, and always constant time, is never correct. It is only an
> approximation to the
On Fri, Feb 23, 2018 at 5:38 PM, Terry Reedy wrote:
> As to the vague 'class of problems implemented in a similar manner': Any
> function f of count N that depends of values of f for counts < N can be
> memoized the same way in Python as fibonacci. Everything said about P vs J
> for fib applies t
On Fri, Feb 23, 2018 at 11:17 PM, bartc wrote:
>>> The fact is that the vast majority of integer calculations don't need to
>>> use big integers (pretty much 100% of mine). Probably most don't even
>>> need 64 bits, but 32 bits.
>>
>>
>> And here we have the World According To Bart again: "since *
On Fri, Feb 23, 2018 at 11:57 PM, bartc wrote:
> On 23/02/2018 08:11, Terry Reedy wrote:
>
>> * Python has an import statement. But 'comparisons' disallow 'import
>> numpy', a quite legal Python statement, and similar others.
>
>
> If I'm duplicating a benchmark [in another language] then the las
On Sat, Feb 24, 2018 at 12:08 AM, Larry Martell wrote:
> On Fri, Feb 23, 2018 at 2:01 AM, dieter wrote:
>> Larry Martell writes:
>>> ...
>>> I had 2.2.1. I updated requests to 2.18.4 and now when I import atws I get:
>>>
>>> No handlers could be found for logger "atws.connection"
>>
>> This is a
On Sat, Feb 24, 2018 at 3:32 AM, Python wrote:
> On Fri, Feb 23, 2018 at 03:11:36AM -0500, Terry Reedy wrote:
>> >>Why do you care about the 50 million calls? That's crazy -- the important
>> >>thing is *calculating the Fibonacci numbers as efficiently as possible*.
>>
>> >If you are writing pract
On Sat, Feb 24, 2018 at 3:39 AM, Steven D'Aprano
wrote:
> On Fri, 23 Feb 2018 23:41:44 +1100, Chris Angelico wrote:
>
> [...]
>>> Integer pixel values
>>
>> Maybe in 64 bits for the time being, but 32 certainly won't be enough.
>> As soon as you d
On Sat, Feb 24, 2018 at 12:41 AM, Larry Martell wrote:
> On Fri, Feb 23, 2018 at 8:34 AM, Chris Angelico wrote:
>> On Sat, Feb 24, 2018 at 12:08 AM, Larry Martell
>> wrote:
>>> On Fri, Feb 23, 2018 at 2:01 AM, dieter wrote:
>>>> Larry Martell writes:
&g
On Sat, Feb 24, 2018 at 4:49 AM, Steven D'Aprano
wrote:
> On Sat, 24 Feb 2018 00:03:06 +1100, Chris Angelico wrote:
>
>>> Is numpy a general purpose C library that can also be called from any
>>> language that can use a C API? Or is it specific to Python?
>>
On Sat, Feb 24, 2018 at 5:05 AM, Steven D'Aprano
wrote:
> But guess what? The benchmarks are flawed. The performance of real-world
> Julia code doesn't match the performance of the benchmarks.
>
> "What’s disappointing is the striking difference between
> the claimed performance and the ob
On Sat, Feb 24, 2018 at 5:43 AM, Python wrote:
> On Sat, Feb 24, 2018 at 03:42:43AM +1100, Chris Angelico wrote:
>> >> If that were so, then the comparison should use the fastest *Python*
>> >> implementation.
>> >
>> > Doing that would completely fail
On Sat, Feb 24, 2018 at 6:09 AM, Python wrote:
> On Sat, Feb 24, 2018 at 05:56:25AM +1100, Chris Angelico wrote:
>> No, not satisfied. Everything you've said would still be satisfied if
>> all versions of the benchmark used the same non-recursive algorithm.
>> There
On Sat, Feb 24, 2018 at 6:25 AM, bartc wrote:
> On 23/02/2018 18:05, Steven D'Aprano wrote:
>>
>> On Fri, 23 Feb 2018 13:51:33 +, Ben Bacarisse wrote:
>
>
>> Stop writing crap code and then complaining that the language is "too
>> slow". Write better code, and then we'll take your complaints s
On Sat, Feb 24, 2018 at 7:02 AM, bartc wrote:
> On 23/02/2018 19:47, Chris Angelico wrote:
>>
>> On Sat, Feb 24, 2018 at 6:25 AM, bartc wrote:
>
>
>>> The difference between Python and another dynamic language might be a
>>> magnitude, yet you say it doesn&
On Sat, Feb 24, 2018 at 8:32 AM, bartc wrote:
> So I'll keep it generic. Let's say the Tiny C compiler is not taken
> seriously because it might be a couple of times slower than gcc-O3, even
> thought it's 1% of the size and compiles 1000% as fast.
Except that nobody has said that. You're doing a
ython
No, it’s terrible. So is the Python 3 version. All you need for both
Pythons is this:
import io
with io.open('input.txt', 'r', encoding='utf-8') as fh:
for character in fh:
print(character)
(and please make sure you need to read character-
On Mon, Feb 26, 2018 at 12:33 AM, Chris Warrick wrote:
> On 24 February 2018 at 17:17, Peng Yu wrote:
>> Here shows some code for reading Unicode characters one by one in
>> python2. Is it the best code for reading Unicode characters one by one
>> in python2?
>>
>
On Mon, Feb 26, 2018 at 3:57 AM, Steven D'Aprano
wrote:
> On Mon, 26 Feb 2018 01:50:16 +1100, Chris Angelico wrote:
>
>> If you actually need character-by-character, you'd need "for character
>> in fh.read()" rather than iterating over the file itself.
On Mon, Feb 26, 2018 at 1:33 PM, Rick Johnson
wrote:
> On Friday, February 23, 2018 at 10:41:45 AM UTC-6, Steven D'Aprano wrote:
> [...]
>> There are dozens of languages that have made the design
>> choice to limit their default integers to 16- 32- or 64-bit
>> fixed size, and let the user worry a
On Mon, Feb 26, 2018 at 5:19 AM, wrote:
> Why we don’t use:
>
> for _ in _ in _
>
> Instead of
>
> for _ in _:
> for _ in _:
>
> Ex:
>
> Names = ["Arya","Pupun"]
>
> for name in Names:
>for c in name:
>print(c)
>
> instead use:
>
> for c in name in Names:
> print(c)
B
On Mon, Feb 26, 2018 at 8:57 PM, Steven D'Aprano
wrote:
> On Sun, 25 Feb 2018 20:22:17 -0800, Rick Johnson wrote:
>
>> So of course, speed is not and should not be the
>> primary concern, but to say that execution speed is of _no_ concern is
>> quite absurd indeed.
>
> I'm pretty sure that nobody
On Mon, Feb 26, 2018 at 10:13 PM, bartc wrote:
> Below is the first draft of a Python port of a program to do with random
> numbers. (Ported from my language, which in turned ported it from a C
> program by George Marsaglia, the random number guy.)
>
> However, running it quickly exhausts the memo
On Tue, Feb 27, 2018 at 12:03 AM, Steven D'Aprano
wrote:
> On Mon, 26 Feb 2018 22:34:00 +1100, Chris Angelico wrote:
>> Removing the GIL from CPython is not about "speeding up" the language or
>> the interpreter, but about improving parallelism.
>
> It is abou
On Tue, Feb 27, 2018 at 1:41 AM, Steven D'Aprano
wrote:
> I have a class with a large number of parameters (about ten) assigned in
> `__init__`. The class then has a number of methods which accept
> *optional* arguments with the same names as the constructor/initialiser
> parameters. If those argu
On Tue, Feb 27, 2018 at 2:02 AM, bartc wrote:
> On 26/02/2018 14:04, bartc wrote:
>>
>> On 26/02/2018 13:42, Ned Batchelder wrote:
>
>
>> Well, once you notice that the
>>>
>>> Python code had N=1e5, and the C code had N=1e9 :) If you want to
>>> experiment, with N=1e5, the final number should
On Tue, Feb 27, 2018 at 6:38 AM, Kirill Balunov wrote:
> Currently `str.join` raises `TypeError` if there are any non-string values
> in iterable, including `bytes` objects. Is it an awful idea to implicitly
> _cast_ elements in iterable to their `str` or `repr` representation? Was
> this question
On Tue, Feb 27, 2018 at 6:37 AM, Rick Johnson
wrote:
> On Monday, February 26, 2018 at 4:39:22 AM UTC-6, Steven D'Aprano wrote:
>> On Sun, 25 Feb 2018 19:26:12 -0800, Rick Johnson wrote:
>>
>> > On Friday, February 23, 2018 at 8:48:55 PM UTC-6, Steven D'Aprano wrote:
>> > [...]
>> > > Take the Fib
On Tue, Feb 27, 2018 at 6:54 AM, Kirill Balunov wrote:
>> print(*iterable, sep=", ")
>
>
> Thanks, I apologize :-) and why I always manage to find complicated ways...
Hey, that's why we have the list :) I call this a success.
ChrisA
--
https://mail.python.org/mailman/listinfo/python-list
On Tue, Feb 27, 2018 at 11:17 AM, Steven D'Aprano
wrote:
> On Tue, 27 Feb 2018 02:09:53 +1100, Chris Angelico wrote:
>
>> You're still reimplementing the C code in Python, which is inefficient.
>> Have you considered going back to the *actual algorithm* and
>>
On Tue, Feb 27, 2018 at 12:57 PM, bartc wrote:
> On 27/02/2018 00:35, Chris Angelico wrote:
>>
>> On Tue, Feb 27, 2018 at 11:17 AM, Steven D'Aprano
>> wrote:
>>>
>>> On Tue, 27 Feb 2018 02:09:53 +1100, Chris Angelico wrote:
>>>
>>&g
On Tue, Feb 27, 2018 at 12:18 PM, Rick Johnson
wrote:
> On Tuesday, February 20, 2018 at 5:45:36 PM UTC-6, Steven D'Aprano wrote:
>> On Tue, 20 Feb 2018 12:42:23 -0800, Rick Johnson wrote:
>>
>> > For instance, if the age is queried many times a second,
>> > it would be a much wiser design to set-
On Tue, Feb 27, 2018 at 2:55 PM, Ian Kelly wrote:
> On Mon, Feb 26, 2018 at 8:09 PM, Steven D'Aprano
> wrote:
>> Yes you did: "the last second of every year" is always 23:59:59 of 31st
>> December, and it is always the same time and date "every year".
>
> Except when it's 23:59:60 or 23:59:61 (wh
On Wed, Feb 28, 2018 at 11:29 AM, Larry Martell wrote:
> Trying to install psutil (with pip install psutil) on Red Hat EL 7.
> It's failing with:
>
> Python.h: No such file or directory
>
> Typically that means the python devel libs are not installed, but they are:
>
> [root@liszt ~]# yum install
On Tue, Feb 27, 2018 at 5:55 AM, Kirill Balunov wrote:
> 2. The documentation has a note that "The contents of this dictionary
> should not be modified". Which implies that it is a read only mapping. So
> the question why it is `dict` instead of `types.MappingProxyType`?
A dict is smaller and fas
On Wed, Feb 28, 2018 at 5:54 PM, dieter wrote:
> Ned Batchelder writes:
>> On 2/27/18 3:52 AM, Kirill Balunov wrote:
>>> a. Is this restriction for locals desirable in the implementation of
>>> CPython in Python 3?
>>> b. Or is it the result of temporary fixes for Python 2?
>>
>> My understandi
On Wed, Feb 28, 2018 at 10:58 PM, Steven D'Aprano
wrote:
> On Wed, 28 Feb 2018 18:04:11 +1100, Chris Angelico wrote:
>> But if you know that
>> there's only a handful of variables that you'd actually want to do that
>> to, you can simply put those into an obj
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