Re: type hinting backward compatibility with python 3.0 to 3.4
On Sat, 20 May 2017 11:42 am, Gregory Ewing wrote: > Steve D'Aprano wrote: >> On Fri, 19 May 2017 11:35 pm, Edward Ned Harvey (python) wrote: >> >>> I *thought* python 3.0 to 3.4 would *ignore* annotations, but it >>> doesn't... >> >> Why would you think that? > > Ever since Guido retconned the purpose of annotations to be > for static type hinting *only*, it would make more sense for > the interpreter to ignore them, or at least not evaluate them > immediately at run time (since it would avoid all the problems > of forward references, etc). You mean treat them as syntactically comments? def function(arg:I can put ***ANYTHING*** I like here!!!): ... I don't think that's a good idea. Ever since they were introduced, annotations have always been evaluated and recorded in the function.__annotations__ attribute. That makes them available at runtime for decorator to do additional processing, or for introspection. > So I can see how someone relying on the principle of least > surprise might assume that. Oh I don't know, given that everything else apart from #comments is evaluated at runtime[1] in Python, I think it would be surprising if annotations weren't. [1] Apart from some constant folding done as an optimization. -- Steve Emoji: a small, fuzzy, indistinct picture used to replace a clear and perfectly comprehensible word. -- https://mail.python.org/mailman/listinfo/python-list
Re: type hinting backward compatibility with python 3.0 to 3.4
On Sat, 20 May 2017 11:57 am, Chris Angelico wrote:
> They're function metadata. What would the principle of least surprise
> say about this?
>
> print("Spam")
> def func(arg: print("Foo") = print("Quux")):
> print("Blargh")
> print("Fred")
> func()
> print("Eggs")
>
> What should be printed, and in what order?
My prediction:
Spam
Foo
Quux
Fred
Blargh
Eggs
but I wouldn't be the least bit astonished if Foo and Quux are in the
opposite order. As in fact they are.
> Actually, Python does violate least-surprise in one area here. There's
> one message that gets printed "out of order" compared to my
> expectation. I wonder if it's the same one that other people will be
> surprised at.
The reason appears to be that the default arguments are evaluated first,
from left to right, followed by the annotations:
py> def func(a:print(1)=print(2), b:print(3)=print(4), c:print(4)=print(5)):
... pass
...
2
4
5
1
3
4
--
Steve
Emoji: a small, fuzzy, indistinct picture used to replace a clear and
perfectly comprehensible word.
--
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Re: Finding sentinel text when using a thread pool...
Christopher Reimer writes: > I'm developing a web scraper script. It takes 25 minutes to process > 590 pages and ~9,000 comments. I've been told that the script is > taking too long. > > The way the script currently works is that the page requester is a > generator function that requests a page, checks if the page contains > the sentinel text (i.e., "Sorry, no more comments."), and either > yields the page and request the next page or exits the function. Every > yielded page is parsed by Beautiful Soup and saved to disk. > > Timing the page requester separately from the rest of the script and > the end value set to 590, each page request takes 1.5 seconds. That's very slow to fetch a page. > If I use a thread pool of 16 threads, each request takes 0.1 > seconds. (Higher thread numbers will result in the server forcibly > closing the connection.) > > I'm trying to figure out how I would find the sentinel text by using a > thread pool. Seems like I need to request an arbitrary number of pages > (perhaps one page per thread), evaluate the contents of each page for > the sentinel text, and either request another set of pages or exit the > function. If your (590) pages are linked together (such that you must fetch a page to get the following one) and page fetching is the limiting factor, then this would limit the parallelizability. If processing a selected page takes a significant amount of time (compared to the fetching), then you could use a work queue as follows: a page is fetched and the following page determined; if a following page is found, processing this page is put as a job into the work queue and page processing is continued. Free tasks look for jobs in the work queue and process them. -- https://mail.python.org/mailman/listinfo/python-list
Re: I need help with making my claculator
On 20/05/2017 03:10, Chris Angelico wrote:
On Sat, May 20, 2017 at 11:40 AM, wrote:
def calc(self, display):
try:
display.set(eval(display.get()))
except:
display.set("Type an actual equation please!")
Without any specific questions, you're not going to get anything more
than a basic eyeballing of the code.
Try running the program.
(I did that but I can't follow this style of coding so can't help.)
--
bartc
--
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Re: I need help with making my claculator
On Sat, May 20, 2017 at 9:13 PM, bartc wrote:
> On 20/05/2017 03:10, Chris Angelico wrote:
>>
>> On Sat, May 20, 2017 at 11:40 AM, wrote:
>>>
>>> def calc(self, display):
>>> try:
>>> display.set(eval(display.get()))
>>> except:
>>> display.set("Type an actual equation please!")
>>
>>
>> Without any specific questions, you're not going to get anything more
>> than a basic eyeballing of the code.
>
>
> Try running the program.
>
> (I did that but I can't follow this style of coding so can't help.)
I don't run arbitrary code. I eyeball it instead.
ChrisA
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Re: No module named vtkCommonCorePython
> > I have a problem to finding file in Python path,Anybody knows how to solve > it? > > Unexpected error: > Traceback (most recent call last): > File > "/home/nurzat/Documents/vmtk-build/Install/bin/vmtklevelsetsegmentation", > line 20, in > from vmtk import pypeserver > File "/usr/local/lib/python2.7/dist-packages/vmtk-1.3.linux- > x86_64.egg/vmtk/pypeserver.py", line 15, in > import vtk > File "/usr/local/lib/python2.7/dist-packages/vmtk-1.3.linux- > x86_64.egg/vmtk/vtk/__init__.py", line 41, in > from .vtkCommonCore import * > File "/usr/local/lib/python2.7/dist-packages/vmtk-1.3.linux- > x86_64.egg/vmtk/vtk/vtkCommonCore.py", line 9, in > from vtkCommonCorePython import * > ImportError: No module named vtkCommonCorePython > > I tried a search and got several hits for this exact error. -- https://mail.python.org/mailman/listinfo/python-list
Re: I need help with making my claculator
On Sat, 20 May 2017 09:13 pm, bartc wrote: > On 20/05/2017 03:10, Chris Angelico wrote: >> Without any specific questions, you're not going to get anything more >> than a basic eyeballing of the code. > > Try running the program. > > (I did that but I can't follow this style of coding so can't help.) Chris is within his rights to refuse to run untrusted code downloaded over the internet. It's not even the security aspect: the code is fairly short, and doesn't appear to be obfuscated or do anything nasty. But its a matter of fairness: we're volunteers, not slaves or paid workers, and we get to choose on what problems we work on. We're not being paid to solve people's problems, we're doing it from a sense of community (and maybe to show off, a bit). We've only got so much time and energy for solving people's problems, and the more vague those problems are, the less likely we are to care enough to put the work in to solve it. Give us an interesting problem, and some of us will put *hours* of work into it. But give us something vague or boring or trivial, and What's In It For Us? The Original Poster garsink at gmail.com cares so little for our time that he or she didn't even *ask* a question. Or give a name we can call them (email addresses are so impersonal and unfriendly). Nothing but a pair of statements: I need help, here's my code. Well, we all need help, and thank you for sharing. Why should we bother to run your code if you can't even be bothered to say Please or Thank You or tell us what's wrong with it? "garsink", or whatever you would like us to call you, please help us to help you. Don't expect us to run your code until you've made it interesting for us. Please read this webpage before answering: http://sscce.org/ It is written for Java programmers, but it applies to Python too. Thank you. -- Steve Emoji: a small, fuzzy, indistinct picture used to replace a clear and perfectly comprehensible word. -- https://mail.python.org/mailman/listinfo/python-list
Re: How to install Python package from source on Windows
Steve D'Aprano wrote: Or /sbin or /usr/sbin or /opt :-) Yes, there are a few others. The point is that there is a small number of standard places for executables, and if you have them on your path, you're good to go. With Visual Studio it seems things get installed somewhere that's not on your path by default, and you're expected to run a script to start a console window with the path set up properly. -- Greg -- https://mail.python.org/mailman/listinfo/python-list
Re: I need help with making my calculator
On Sat, 20 May 2017 11:42 am, gars...@gmail.com wrote:
> m using Python 3.4.2
> This is my code:
Please read this first:
http://sscce.org/
And then indent the "calc" method so that it is part of the class:
> def calc(self, display):
> try:
> display.set(eval(display.get()))
> except:
> display.set("Type an actual equation please!")
That's not indented. It needs to be indented by one level.
--
Steve
Emoji: a small, fuzzy, indistinct picture used to replace a clear and
perfectly comprehensible word.
--
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Re: type hinting backward compatibility with python 3.0 to 3.4
Chris Angelico wrote:
They're function metadata. What would the principle of least surprise
say about this?
print("Spam")
def func(arg: print("Foo") = print("Quux")):
print("Blargh")
print("Fred")
func()
print("Eggs")
Most languages that have static type declarations wouldn't
let you write something like that in the first place, so the
fact that Python does is surprising to begin with.
--
Greg
--
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Re: I need help with making my claculator
On Sat, May 20, 2017 at 9:49 AM, Steve D'Aprano wrote: > On Sat, 20 May 2017 09:13 pm, bartc wrote: > >> On 20/05/2017 03:10, Chris Angelico wrote: >>> Without any specific questions, you're not going to get anything more >>> than a basic eyeballing of the code. >> >> Try running the program. >> >> (I did that but I can't follow this style of coding so can't help.) > > Chris is within his rights to refuse to run untrusted code downloaded over > the internet. > > It's not even the security aspect: the code is fairly short, and doesn't > appear to be obfuscated or do anything nasty. > > But its a matter of fairness: we're volunteers, not slaves or paid workers, > and we get to choose on what problems we work on. > > We're not being paid to solve people's problems, we're doing it from a sense > of community (and maybe to show off, a bit). We've only got so much time > and energy for solving people's problems, and the more vague those problems > are, the less likely we are to care enough to put the work in to solve it. > > Give us an interesting problem, and some of us will put *hours* of work into > it. But give us something vague or boring or trivial, and What's In It For > Us? > > The Original Poster garsink at gmail.com cares so little for our time that > he or she didn't even *ask* a question. Or give a name we can call them > (email addresses are so impersonal and unfriendly). Nothing but a pair of > statements: I need help, here's my code. > > Well, we all need help, and thank you for sharing. > > Why should we bother to run your code if you can't even be bothered to say > Please or Thank You or tell us what's wrong with it? > > "garsink", or whatever you would like us to call you, please help us to help > you. Don't expect us to run your code until you've made it interesting for > us. Please read this webpage before answering: > > http://sscce.org/ > > It is written for Java programmers, but it applies to Python too. > > Thank you. > > > > -- > Steve > Emoji: a small, fuzzy, indistinct picture used to replace a clear and > perfectly comprehensible word. > > -- > https://mail.python.org/mailman/listinfo/python-list I took a look at the url from the email address. Its some private school for apparently youngish kids. So, a little perspective on the rather vague query. Poster, maybe try the python-tutor mailing list -- Joel Goldstick http://joelgoldstick.com/blog http://cc-baseballstats.info/stats/birthdays -- https://mail.python.org/mailman/listinfo/python-list
[ANN] aioxmpp 0.9 released
Dear subscribers, We are pleased to announce the release of aioxmpp 0.9. The current release can be obtained from GitHub [1] (check out the v0.9.0 tag or the master branch) or PyPI [2]. The HTML documentation can be found at [3]. Examples can be found in the GitHub repository, in the examples sub directory. aioxmpp is a Python library based on asyncio. It implements the client side of the XMPP protocol (RFC 6120 and others). For a more detailed description of the package, please review the README of the package on GitHub [1] or on PyPI [2]. For more information on XMPP, please see [8]. aioxmpp is licensed under the terms of the GNU Lesser General Public License Version 3.0 or later. Version 0.9 is a feature release. Many new XMPP Extensions (XEPs) have been implemented in this release, to a great extent thanks to [@sebastianriese]. A few highlights include: * Support for [XEP-0163] (Personal Eventing Protocol), which is used for server-side broadcast and storage of account information. * Support for [XEP-0084] (User Avatar), [XEP-0049] (Private XML Storage, nowadays often replaced by XEP-0163), and [XEP-0048] (Bookmarks). * A new subpackage (aioxmpp.im) [10] which focuses on modern Instant Messaging features has been introduced. It is still very experimental, but does already support Message Carbons. The Multi-User Chat implemementation has been ported to adhere to that interface. See the linked docs to see where the journey is going, it’s hard to summarize in a single paragraph! The full list of new features is, as always, included in the changelog [9] included in the official documentation. Bugs, feature requests, patches and questions can be directed to either the aioxmpp mailing list [4], the GitHub issue tracker [5] or the XMPP Multi-User chat [6], whatever floats your boat. Please direct security-relevant issue reports directly to me (jo...@wielicki.name), preferably encrypted using my GPG public key [7]. best regards and happy-asyncio-ing, Jonas Wielicki [1]: https://github.com/horazont/aioxmpp [2]: https://pypi.python.org/pypi/aioxmpp [3]: https://docs.zombofant.net/aioxmpp/0.9/ [4]: https://lists.zombofant.net/mailman/listinfo/aioxmpp-devel [5]: https://github.com/horazont/aioxmpp/issues [6]: aiox...@conference.zombofant.net [7]: https://sks-keyservers.net/pks/lookup?op=get&search=0xE5EDE5AC679E300F AA5A 78FF 508D 8CF4 F355 F682 E5ED E5AC 679E 300F [8]: https://xmpp.org/ [9]: https://docs.zombofant.net/aioxmpp/0.9/api/changelog.html#version-0-9 [10]: https://docs.zombofant.net/aioxmpp/0.9/api/public/im.html [XEP-0048]: https://xmpp.org/extensions/xep-0048.html [XEP-0049]: https://xmpp.org/extensions/xep-0049.html [XEP-0084]: https://xmpp.org/extensions/xep-0084.html [XEP-0163]: https://xmpp.org/extensions/xep-0163.html @sebastianriese: https://github.com/sebastianriese/ signature.asc Description: This is a digitally signed message part. -- https://mail.python.org/mailman/listinfo/python-list
Re: type hinting backward compatibility with python 3.0 to 3.4
Steve D'Aprano wrote: You mean treat them as syntactically comments? def function(arg:I can put ***ANYTHING*** I like here!!!): They could be parsed as expressions and stored as an AST. That would allow introspection, and you could evaluate them if you wanted Ever since they were introduced, annotations have always been evaluated and recorded in the function.__annotations__ attribute. Yes, but I'm not sure how much good that does you. Because of the forward-reference thing, you need to be prepared to get a string instead of a type object, in which case you need to do some evaluation on it yourself anyway. -- Greg -- https://mail.python.org/mailman/listinfo/python-list
Re: I need help with making my claculator
On 20/05/2017 14:49, Steve D'Aprano wrote: On Sat, 20 May 2017 09:13 pm, bartc wrote: Try running the program. (I did that but I can't follow this style of coding so can't help.) Chris is within his rights to refuse to run untrusted code downloaded over the internet. It's not even the security aspect: the code is fairly short, and doesn't appear to be obfuscated or do anything nasty. But its a matter of fairness: we're volunteers, not slaves or paid workers, and we get to choose on what problems we work on. I think of these as little puzzles to solve. And in this case, it had a nifty little display; but I couldn't even get to the point where I could use that display setup as a start point and add my own logic to make it work. (Could such a program be implemented using simple linear logic? I dusted off some old, half-finished graphics library of mine [not Python] and tried emulating a 4-function calculator. The answer was yes, it could. For a simple app like this, you don't need classes or lambdas or whatever else it is using; a simple loop will do.) We're not being paid to solve people's problems, we're doing it from a sense of community (and maybe to show off, a bit). We've only got so much time and energy for solving people's problems, and the more vague those problems are, the less likely we are to care enough to put the work in to solve it. Give us an interesting problem, and some of us will put *hours* of work into it. But give us something vague or boring or trivial, and What's In It For Us? OK, if I ever get stuck with a Python problem, I'd better make it interesting then! -- bartc -- https://mail.python.org/mailman/listinfo/python-list
Re: type hinting backward compatibility with python 3.0 to 3.4
On Sat, May 20, 2017 at 11:58 PM, Gregory Ewing
wrote:
> Chris Angelico wrote:
>>
>> They're function metadata. What would the principle of least surprise
>> say about this?
>>
>> print("Spam")
>> def func(arg: print("Foo") = print("Quux")):
>> print("Blargh")
>> print("Fred")
>> func()
>> print("Eggs")
>
>
> Most languages that have static type declarations wouldn't
> let you write something like that in the first place, so the
> fact that Python does is surprising to begin with.
This is true. But since Python _does_ work with dynamic evaluation
(which consequently demands that these kinds of things be expressions
evaluated at compile time), it must by definition be possible to have
side effects. Of course, you would never actually do this in
production code, but I've often made use of the fact that a function's
default argument isn't technically a constant - for example:
DEFAULT_URL = "http://yada.yada.example/";
if testing:
DEFAULT_URL = "http://yada.yada.localhost/";
if staging:
DEFAULT_URL = "http://yada.yada.test.example/";
...
def do_stuff(thing, *, url=DEFAULT_URL):
It has to be evaluated at run time, but from the programmer's point of
view, it's a constant. In C, for instance, this kind of thing would
generally be done with #if and #define.
Like everything in Python, there is a well-defined order of
evaluation, just in case it matters. I wouldn't hazard a guess as to
how often it will, but it's good to know that if it does, you can just
test it once and then be confident :)
ChrisA
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Re: How to install Python package from source on Windows
I have followed this discussion since the beginning, and I have been intrigued. I recently read a relevant blog post that I'd like to share. It has arguments for both sides: http://nullprogram.com/blog/2017/03/30/. 2017-05-20 0:01 GMT+02:00 eryk sun mailto:eryk...@gmail.com>>: On Fri, May 19, 2017 at 9:18 PM, bartc mailto:b...@freeuk.com>> wrote: > On 19/05/2017 19:53, eryk sun wrote: >> >> On Fri, May 19, 2017 at 1:57 PM, bartc >> mailto:b...@freeuk.com>> wrote: > > >>> The 'improvement' seems to involve making things more complicated rather >>> than less. > > >> You don't need a full Visual Studio 2015 installation. You can install >> Visual C++ 2015 Build Tools [1], which includes MSBuild, and use the >> x86 or x64 native tools command prompt. Install the WDK to get the >> Windows debuggers windbg, cdb, kd, and ntsd. >> >> To build the external dependencies, you'll need svn and nasm in PATH. >> You don't need git if you've downloaded the source manually. Ignore >> the warning if it can't find git. >> >> [1]: http://landinghub.visualstudio.com/visual-cpp-build-tools > > TBH I've no idea what most of these things do. So if something goes wrong, I > can't hack my way around them. > > (And things will go wrong; I've just tried to uninstall VS2017, as I think > it was, and eventually it said 'Uninstall Failed'! I download msbuild tools > you suggested. MSBUILD, I simply don't know how to use. CL, either it can't > find it, or it crashes. So forget it. MSBuild is a build tool for C/C++ and .NET projects that are defined by XML project files. You need it to build CPython via pcbuild.proj. Run the x64 or x86 native tools command prompt to set up the command-line build environment (PATH, INCLUDE, LIB). Assuming everything is set up right, you should have no problem running cl.exe and link.exe. -- https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list
Re: How to install Python package from source on Windows
On Thursday, May 18, 2017 at 8:32:18 PM UTC+1, bartc wrote: > On 18/05/2017 18:11, Steve D'Aprano wrote: > > > Seems a bit hypocritical, don't you think? Expecting people to go spelunking > > into your undocumented mystery language source code to work out how to > > build it from source, and then turning around and complaining that Python's > > build process: > > > > PCbuild\build.bat -e -d > > > > > > is too complicated. > > > You're right of course. But it makes you wonder then why they bother > making available binary builds of Python for Windows, when someone just > needs to enter a simple command and it will effortlessly build you a > customised version from source. > > > -- > bartc Enough is enough. It is quite clear to me and has been ever since he started on this list that he knows squat about programming. Please can we get rid of this troll. He knows as much about Python and/or programming as the RUE knows about PEP 393. Kindest regards. Mark Lawrence. -- https://mail.python.org/mailman/listinfo/python-list
Re: How to install Python package from source on Windows
On Friday, May 19, 2017 at 1:41:02 AM UTC+1, Michael Torrie wrote:
> On 05/18/2017 05:15 PM, Steve D'Aprano wrote:
> > Oh but this is Bart we're talking about. Of course his code generator is
> > perfect, it is unthinkable that it emits incorrect code.
>
> I think we've picked on Bart enough for one day. Fortunately he seems
> rather good natured, but this is bordering on the ad hominem in my
> opinion. Sure Bart's posts often reflect a bit of confrontation in
> regards to his own programming languages vs Python. But I don't think
> an attack ("of course his code generator is perfect") is called for.
>
I disagree entirely. For a person who claims to have 40 years programming
experience I say he's completely clueless. Until such time as he can show that
he understands source code control, the difficulties in building cross platform
code and the other 1,000,001 problems that people who have to work in teams
have to put up with on a daily basis, I will not be changing my opinion. Run
time speed, which he is completely obsessed with, is for 99.99% of programmers
in the 21st century irrelevant.
Kindest regards.
Mark Lawrence.
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Re: getting the center of mass of each part of a molecule
I have more than 100 ligand molecules. The image I showed at the beginning of this discussion was only an example. It had missing atoms. See it without missing any atom in the pdb format (coordinates in Angstrom unit): ATOM 1 O1 LIG 1 46.050 50.290 26.860 ATOM 2 O2 LIG 1 46.070 47.530 27.170 ATOM 3 C1 LIG 1 47.630 49.260 23.730 ATOM 4 C2 LIG 1 48.200 49.870 22.500 ATOM 5 C3 LIG 1 47.090 50.070 24.730 ATOM 6 C4 LIG 1 46.570 49.490 25.890 ATOM 7 C5 LIG 1 47.650 47.870 23.890 ATOM 8 C6 LIG 1 46.590 48.100 26.040 ATOM 9 C7 LIG 1 47.120 47.290 25.050 ATOM 10 C8 LIG 1 47.160 50.610 21.680 ATOM 11 C9 LIG 1 46.450 51.660 26.860 ATOM 12 C10 LIG 1 46.910 51.920 21.790 ATOM 13 H1 LIG 1 48.640 49.150 21.820 ATOM 14 H2 LIG 1 48.980 50.600 22.700 ATOM 15 H3 LIG 1 47.080 51.150 24.610 ATOM 16 H4 LIG 1 48.070 47.240 23.110 ATOM 17 H5 LIG 1 47.140 46.210 25.170 ATOM 18 H6 LIG 1 46.580 50.030 20.960 ATOM 19 H7 LIG 1 45.570 52.300 26.810 ATOM 20 H8 LIG 1 47.090 51.850 26.000 ATOM 21 H9 LIG 1 47.000 51.860 27.780 ATOM 22 H10 LIG 1 46.190 48.140 27.920 ATOM 23 H11 LIG 1 46.220 52.400 21.250 ATOM 24 H12 LIG 1 46.750 52.530 22.680 The same ligand coordinate file in gro format (coordinates in nanometer unit) is here as well: 1LIG O11 4.605 5.029 2.686 1LIG O22 4.607 4.753 2.717 1LIG C13 4.763 4.926 2.373 1LIG C24 4.820 4.987 2.250 1LIG C35 4.709 5.007 2.473 1LIG C46 4.657 4.949 2.589 1LIG C57 4.765 4.787 2.389 1LIG C68 4.659 4.810 2.604 1LIG C79 4.712 4.729 2.505 1LIG C8 10 4.716 5.061 2.168 1LIG C9 11 4.645 5.166 2.686 1LIGC10 12 4.691 5.192 2.179 1LIG H1 13 4.864 4.915 2.182 1LIG H2 14 4.898 5.060 2.270 1LIG H3 15 4.708 5.115 2.461 1LIG H4 16 4.807 4.724 2.311 1LIG H5 17 4.714 4.621 2.517 1LIG H6 18 4.658 5.003 2.096 1LIG H7 19 4.557 5.230 2.681 1LIG H8 20 4.709 5.185 2.600 1LIG H9 21 4.700 5.186 2.778 1LIGH10 22 4.619 4.814 2.792 1LIGH11 23 4.622 5.240 2.125 1LIGH12 24 4.675 5.253 2.268 I am doing molecular dynamics simulation of protein-ligand complex. The issue is to keep the ligand in the binding site of the protein during simulation when turned off the interactions (van der waals, coulomb...) between the ligand and protein. In that case, to keep the ligand in the bindind site I need to apply the translational and rotational restraints (distance, angle, dihedral restraints). The more detail is here http://pubs.acs.org/doi/abs/10.1021/jp0217839 My aim is to get the COM of the whole ligand (I already do it) and divide the ligand in two parts and find to the COM of each part. Then I will apply the distance, angle and dihedral restraints on the atoms of the ligand and protein. -The first distance restraints will be between one of the ligand heavy atom closest to the ligand COM (COM for whole ligand atoms) and one of the protein atoms closest to the ligand COM. -The second distance restraints will be between one of the ligand heavy atom closest to the COM of the first part of ligand in two parts and one of the protein atoms closest to the COM of the first part of ligand in two parts. -And the third distance restraints will be between one of the ligand heavy atom closest to the COM of the second part of ligand in two parts and one of the protein atoms closest to the COM of the second part of ligand in two parts. That is, I will form 3 bonds between ligand and protein. Hope that makes clear what I am trying to do. Please tell me on the python code what I need to do. Thanks. -- https://mail.python.org/mailman/listinfo/python-list
سكس اسرائيلى موقع سميرة الشرموطة موقع الشرموطة سميرة موقع ميلتا للجنس العربي موقع مليتا للسكس العربي موقع مليتا موقع 89
سكس اسرائيلى موقع سميرة الشرموطة موقع الشرموطة سميرة موقع ميلتا للجنس العربي موقع مليتا للسكس العربي موقع مليتا موقع 89 سكس منيوكه مرفت جنس منيوكة مصرية منديات عرب لبنان سكس منتديات فلام إغتصاب منتديات سكسية منتديات سكس منتديات شرموطة منتديات رومنسي السكسية منت https://mslslat2017.blogspot.com.cy/ https://mslslat2017.blogspot.com.cy/ سكس اسرائيلى موقع سميرة الشرموطة موقع الشرموطة سميرة موقع ميلتا للجنس العربي موقع مليتا للسكس العربي موقع مليتا موقع 89 سكس منيوكه مرفت جنس منيوكة مصرية منديات عرب لبنان سكس منتديات فلام إغتصاب منتديات سكسية منتديات سكس منتديات شرموطة منتديات رومنسي السكسية منتديات جنسيه مجانيه منتديات جنسية منتديات افلام سكس مصريلمجاني دون اشتراك افلام فيفى عبدة سكس افلام فيديو سوري مع سودانيين افلام عربيه سكسي افلام عراقية خليعة افلام سكس من مواقع غير محجوبه افلام سيكس ورعان افلام سيكس مصرية افلام جنس عربيه مجانيه افلام جنس مجانا افلام تونسيه زبيده ثروت افلام بلوتوث افلام الفمر المصرى قصيرة للتحميل المجانى دون افلام ميرفت امين السكس افلام محارم جنسية افلام لبنانية مثيرة افلام دعارة عربية افلا سكس للفنانات افلا م عربى سكس افلم وصور سيكس اغنية شو بني للموبايل اغتصاب نساء بنات اطفال عراقيات مجاني اغتصاب ورعان اغانىعربيه اغاني ننسي عجرم اغاني هجوله استماع اغاني عن البنات ممنوعه اغانى حديثة اغاني افلام كارتون سبيستون اغاني اجنبي قديمه mp3 اغانى اجنبي ديسكو اغاني للموبايل mp3 اغاني لورده الجزاءريه لتنزيل اغا ني مصربة اغا نى لحن اغا بى شعبى اسماء لافلام سكس بالعربيه ارقام موبيل للتعارف اريد سكسا اريد مواقع مسيحية للاطفال اريد مشاهدة صور سكس مجاتا اخر اخبار الممثلات العرب اخر مقاطع للاغاني اجدد الصور للفنانين اجانب اجدد الصور للفنانين مصريين اجدد الافلام السكس الاجنبيه احدث قصص محارم احدث صور باسكال احدث رقص شرقى مجانا احدث برامج مليتا احدث افلم اجنبى احدث النيك احدث الصور العربية السكسية احدث مقاطع اغانى احدث موقع سكسي احدث موقع اباحي اخبار الفنا نا ت ايميلات شراميط ايميلات بنات مصريه احلى قصص السكس العربية احلى قحبه احلي جنس مصري احلى بزاز احلى مغربية في جدة احلا طيز اجمل فلام سكس اجمل صور سكس للفنانات الخليج اجمل شرموطه سوريه اجمل رقص مصري اجمل جميلات تركيا اجمل الصور السكسية اجمل الصور للفنانات اجمل المواقع السكسية اجمل موقع السكس العربى اافلام سكس عربية ااغاني فلسطينيه شعبيه ااغانى عرب نت ااغانى تونسيه االجنس التونسي الكس العربي الكس القطيف سكس اموزش شو جنسي النيك وجنس المحارم النيك الفرنسي النيك الليبى النيك الهام شاهين شرموطة الهام شاهين اجمل صور الهام شاهين الفنانه الهام الفضاله الفتاة السكسيه العاب قذرة مضحكة العاب للبنات فقط-جديدة - العا ب بنات فقط العا ب العا ب العب السكسيه لى ناديه الجندى السكس عاشق البلوتوثات السكس المجانى السكس اللبناني السكس الصور السکس الشرموطه السعوديه الشرموطة نانا الشرموطة فاطمة الشرموطة ليلى السحاقية هالة سرحان السحاق الزب العربي الراقصه شمس الينات السكس البحث عن فليم سكس عربى الافلام السكسيه فيديو الافلام السكس الاعاب سيارات الامير للسكس المراه والسكس ا فلا م سكس ا غا نى عر بية أكبر شرموطه مكتبه سميره السكسيه مكتبة سكس عربى مكتبة سميره للقصص الجنس -- https://mail.python.org/mailman/listinfo/python-list
سكس اسرائيلى موقع سميرة الشرموطة موقع الشرموطة سميرة موقع ميلتا للجنس العربي موقع مليتا للسكس العربي موقع مليتا موقع 89
سكس اسرائيلى موقع سميرة الشرموطة موقع الشرموطة سميرة موقع ميلتا للجنس العربي موقع مليتا للسكس العربي موقع مليتا موقع 89 -- https://mail.python.org/mailman/listinfo/python-list
Re: How to install Python package from source on Windows
On Sat, May 20, 2017 at 8:46 AM, Viktor Hagström
wrote:
> I have followed this discussion since the beginning, and I have been
> intrigued. I recently read a relevant blog post that I'd like to share. It
> has arguments for both sides: http://nullprogram.com/blog/2017/03/30/.
>
"""
There’s a much easier solution: Document that the application
requires, say, C99 and POSIX.1-2001. It’s the responsibility of the
person building the application to supply these implementations, so
there’s no reason to waste time testing for it.
...
...
But what about Windows
"""
Yeah. That's the big problem. It's all very well to say "this
application assumes POSIX". Yeah, thanks, that's easy... except on
Windows. Even if you just say "this application requires C99", you may
run into trouble compiling on Windows, because MSVC doesn't support
all of C99 (or maybe it does now in the very latest version, but if
you want to target all Windowses still in MS support, you have to use
an older MSVC that doesn't), and other compilers (eg mingw) don't
always have proper support for Windows integration. Demanding C99 and
POSIX works only if you're prepared to say "Windows is a second-class
citizen, supported on a best-effort basis only"; you basically have to
demand a full set of GNU build tools, and then forego any sort of real
Windows support - particularly as regards a GUI. And the little caveat
at the end about file names? That's a HUGE deal. The difference
between Windows and POSIX path names is nontrivial. On POSIX, there
are two types of path: absolute (starting with a slash) and relative
(not starting with a slash). You might want to consider tilde
expansion ("~/.bashrc" means "your home directory/.bashrc", and
"~user/.bashrc" means "user's home dir/.bashrc"), but that's a feature
of the shell, not the file system. On Windows? You can have
fully-absolute paths that begin with a drive letter and a slash; you
can have fully-relative paths that begin with neither; and you can
have partially-relative paths that have one or the other. Which means
that, on Windows, you can have "c:xyz" and "d:xyz" and they're
relative to *different* base paths. Have fun coping with that one.
Truly portable code either targets the lowest common denominator,
which means avoiding any sort of file system processing or any
features not in C89, or has multiple branches. That's the only two
ways to do it.
ChrisA
--
https://mail.python.org/mailman/listinfo/python-list
Re: type hinting backward compatibility with python 3.0 to 3.4
On Sun, 21 May 2017 12:14 am, Gregory Ewing wrote: > Steve D'Aprano wrote: >> You mean treat them as syntactically comments? >> >> def function(arg:I can put ***ANYTHING*** I like here!!!): > > They could be parsed as expressions and stored as an AST. > That would allow introspection, and you could evaluate them > if you wanted Ooh, that's a nice idea! -- Steve Emoji: a small, fuzzy, indistinct picture used to replace a clear and perfectly comprehensible word. -- https://mail.python.org/mailman/listinfo/python-list
Re: Finding sentinel text when using a thread pool...
On 5/20/2017 1:19 AM, dieter wrote: If your (590) pages are linked together (such that you must fetch a page to get the following one) and page fetching is the limiting factor, then this would limit the parallelizability. The pages are not linked together. The URL requires a page number. If I requested 1000 pages in sequence, the first 60% will have comments and the remaining 40% will have the sentinel text. As more comments are added over time, the dividing line between the last page with the oldest comments and the first page with the sentinel page shifts over time. Since I changed the code to fetch 16 pages at the same time, the run time got reduced by nine minutes. If processing a selected page takes a significant amount of time (compared to the fetching), then you could use a work queue as follows: a page is fetched and the following page determined; if a following page is found, processing this page is put as a job into the work queue and page processing is continued. Free tasks look for jobs in the work queue and process them. I'm looking into that now. The requester class yields one page at a time. If I change the code to yield a list of 16 pages, I could parse 16 pages at a time. That change would require a bit more work but it would fix some problems that's been nagging me for a while about the parser class. Thank you, Chris Reimer -- https://mail.python.org/mailman/listinfo/python-list
Re: How to install Python package from source on Windows
On 20/05/2017 17:49, Chris Angelico wrote: On Sat, May 20, 2017 at 8:46 AM, Viktor Hagström wrote: I have followed this discussion since the beginning, and I have been intrigued. I recently read a relevant blog post that I'd like to share. It has arguments for both sides: http://nullprogram.com/blog/2017/03/30/. Truly portable code either targets the lowest common denominator, which means avoiding any sort of file system processing or any features not in C89, or has multiple branches. That's the only two ways to do it. Why avoid file processing? Standard C has long had fopen and fclose, and a handful of other functions (basically to read files and to write them). You don't need much else. That blog link also had a reader comment that included these remarks: "CMake and other tools that build build-configuration projects are overly complex and are an impediment to the software development cycle. They hide details like compile and link options, or make you use their language/syntax to express those options, and don't help you avoid os-dependent configuration issues." It goes on [after Cmake was replaced]: "A fresh build would run in a couple of minutes instead of 17 minutes. If no changes are made, it would take Visual Studio and Cmake 20-30 seconds to determine there was nothing to build. Now it takes a split second. ...Keep the build as simple as possible." (Which is exactly what I strive to do. Although my projects are small, they could still involve dozens of source and support files, and require running non-standard tools to build, which would then require other sets of sources to built those. It still doesn't work though because you can get down to just a single file, and people will still moan that it's too complex. You've reduced the job of building a set of kitchen units to hammering in just one nail, but then find that someone has never hammered a nail in before. I'm now investigating how to reduce a project to no files at all!) -- bartc -- https://mail.python.org/mailman/listinfo/python-list
Re: How to install Python package from source on Windows
On Sun, May 21, 2017 at 4:11 AM, bartc wrote: > On 20/05/2017 17:49, Chris Angelico wrote: >> >> On Sat, May 20, 2017 at 8:46 AM, Viktor Hagström >> wrote: >>> >>> I have followed this discussion since the beginning, and I have been >>> intrigued. I recently read a relevant blog post that I'd like to share. It >>> has arguments for both sides: http://nullprogram.com/blog/2017/03/30/. > > >> Truly portable code either targets the lowest common denominator, >> which means avoiding any sort of file system processing or any >> features not in C89, or has multiple branches. That's the only two >> ways to do it. > > > Why avoid file processing? Standard C has long had fopen and fclose, and a > handful of other functions (basically to read files and to write them). You > don't need much else. What's a file name consist of? Is it: * A series of bytes, terminated by \x00? * A series of bytes that must be decodable as UTF-8? * A series of sixteen-bit units which may or may not be decodable as UTF-16? What byte values and what character values are legal? How do you describe a path, or can you only work in the current directory? What is a drive letter, can you use it, and what happens if you omit it? The answers to these questions are not the same on all of today's platforms - and that's even assuming that you can ignore older systems like the pre-BSD Mac OS, or the Amiga. You can *probably* restrict yourself to the current directory and to a limited set of safe file name characters (all of which are ASCII, but not all of ASCII is safe). Probably. But I wouldn't bet my life on even that. > ...Keep the build as simple as possible." > > (Which is exactly what I strive to do. Although my projects are small, they > could still involve dozens of source and support files, and require running > non-standard tools to build, which would then require other sets of sources > to built those. Dozens? Oh you poor wee lamb. rosuav@sikorsky:~/cpython$ find -name \*.c -or -name \*.h | wc -l 672 rosuav@sikorsky:~/pike$ find -name \*.c -or -name \*.h | wc -l 701 rosuav@sikorsky:~/wine$ find -name \*.c -or -name \*.h | wc -l 3981 rosuav@sikorsky:~/linux$ find -name \*.c -or -name \*.h | wc -l 44546 These repositories, by the way, correspond to git URLs https://github.com/python/cpython, git://pike-git.lysator.liu.se/pike.git, git://source.winehq.org/git/wine, and https://github.com/torvalds/linux respectively, if you want to check my numbers. Two language interpreters, a popular execution subsystem, and an OS kernel. I'd like to see you create a single-file version of the Linux kernel that compiles flawlessly on any modern compiler and has no configure script. > It still doesn't work though because you can get down to just a single file, > and people will still moan that it's too complex. You've reduced the job of > building a set of kitchen units to hammering in just one nail, but then find > that someone has never hammered a nail in before. > > I'm now investigating how to reduce a project to no files at all!) Good, you do that. That fits in the same sort of puzzle space as building a Turing tarpit. Meanwhile, the rest of us are actually doing useful things with our lives. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
Re: How to install Python package from source on Windows
On Sun, 21 May 2017 04:11 am, bartc wrote: > You've reduced > the job of building a set of kitchen units to hammering in just one > nail "Where's the fridge go?" "You don't need a fridge. Just put things outside, in the snow. When it snows." "Okay, how do I install a gas oven?" "Sorry, you can't have a gas oven. It has to be an electric stove only." "Oh. I see there's a single-lever mixer tap on the sink. Can I have an old-style tap with two handles? The water here is too hard, it plays merry hell with the cartridges in mixer taps." "No, that's not supported. It has to be a mixer tap, or nothing." "Oh, you've installed a garbage disposal unit in the sink. But I'm not connected to the sewerage system, all my waste water goes to a septic tank, so I can't use an garbage disposal system." "Garbage disposal unit is a hard requirement of this kitchen." "Sorry, this really doesn't suit my needs." "What? But don't you realise how easy it is to install???!??! Look at all the cupboard room, you could fit enough pots and pans for an army in this kitchen, and all it takes is one nail to install!!! That's all, one lousy nail!!! What's wrong with you that you don't see how fantastic this is??? Ungrateful wretch." -- Steve Emoji: a small, fuzzy, indistinct picture used to replace a clear and perfectly comprehensible word. -- https://mail.python.org/mailman/listinfo/python-list
Re: How to install Python package from source on Windows
On 20/05/2017 19:37, Chris Angelico wrote: On Sun, May 21, 2017 at 4:11 AM, bartc wrote: (Which is exactly what I strive to do. Although my projects are small, they could still involve dozens of source and support files, and require running non-standard tools to build, which would then require other sets of sources to built those. Dozens? Oh you poor wee lamb. rosuav@sikorsky:~/cpython$ find -name \*.c -or -name \*.h | wc -l 672 rosuav@sikorsky:~/pike$ find -name \*.c -or -name \*.h | wc -l 701 rosuav@sikorsky:~/wine$ find -name \*.c -or -name \*.h | wc -l 3981 rosuav@sikorsky:~/linux$ find -name \*.c -or -name \*.h | wc -l 44546 This is rather fascinating actually. Of those remarks I quoted it said that VS/Cmake took 17 minutes to do something instead of 2 minutes, or 1 second to check something instead of 20 seconds. What /I/ would like to know is, what is VS/Cmake *doing* in those extra 15 minutes, or the extra 19 seconds. I would say there are two types of people: those who care about the answer, and those who don't. And similarly, I'd quite like to know what all those 44546 files are for. I remember that Debian on Raspberry Pi reported there were 55,000 files installed, yet every time you wanted to actually DO anything, you needed a sudo apt-get install! There is some skill involved I think in keeping things small and manageable and at a human scale. I think that's largely been lost. These repositories, by the way, correspond to git URLs https://github.com/python/cpython, git://pike-git.lysator.liu.se/pike.git, git://source.winehq.org/git/wine, and https://github.com/torvalds/linux respectively, if you want to check my numbers. Two language interpreters, a popular execution subsystem, and an OS kernel. I'd like to see you create a single-file version of the Linux kernel that compiles flawlessly on any modern compiler and has no configure script. I've written plenty of code to talk to the sort of hardware that I assume OSes are still largely concerned with. Those drivers were tiny; what's happened to make them so huge? (Applications I wrote in the 80s had to DIRECTLY deal with colour graphics, pointing devices, fonts, printers and plotters. With multiple drivers for each graphics card, printer etc. /And/ emulate floating point. /And/ emulate virtual memory that swapped itself to disk. The OS only took care of the keyboard, and the file system. Yet, the entire application was STILL tiny!) BTW /does/ Linux compile on /any/ modern compiler? I heard it was so difficult to compile that gcc had to be specially modified to make it possible. Good, you do that. That fits in the same sort of puzzle space as building a Turing tarpit. Meanwhile, the rest of us are actually doing useful things with our lives. Trying to keep the world simple isn't useful? Someone has to keep tabs on such things before technology grinds to a halt under the weight of all the software. -- bartc -- https://mail.python.org/mailman/listinfo/python-list
Re: How to install Python package from source on Windows
On Sat, May 20, 2017 at 5:56 PM, bartc wrote: > I would say there are two types of people: those who care about the answer, > and those who don't. I say there are 10 types of people in this world. Those who understand binary and those who don’t. -- https://mail.python.org/mailman/listinfo/python-list
Re: How to install Python package from source on Windows
On 05/20/2017 03:56 PM, bartc wrote: > BTW /does/ Linux compile on /any/ modern compiler? I heard it was so > difficult to compile that gcc had to be specially modified to make it > possible. The kernel compiles with recent bog standard gcc compilers just fine. The last time there was an issue was way back in the late 90s when RedHat forked GCC and made EGCS, but unfortunately that couldn't compile the kernel at the time, so they used an older version of GCC. Eventually EGCS merged back into the GNU project and actually became GCC (the old GCC faded away). I'm pretty sure the kernel can compile with the Intel compiler. I'm actually pretty sure the kernel can compile with TCC too, or at least it could at one time. The biggest problem with non-GCC compilers is the lack of GCC-specific extensions that the kernel uses. There apparently is a project to get the kernel to build with clang/llvm also. -- https://mail.python.org/mailman/listinfo/python-list
Re: type hinting backward compatibility with python 3.0 to 3.4
Chris Angelico wrote: But since Python _does_ work with dynamic evaluation (which consequently demands that these kinds of things be expressions evaluated at compile time), it must by definition be possible to have side effects. In most languages, type declarations are not expressions and aren't evaluated at all in the usual sense, so questions of evaluation order and side effects just don't apply. If we were designing a static typing system for Python from scratch, I would be strongly arguing that type hints shouldn't be expressions evaluated at run time, because it's such a poor fit for the intended use. Introspectable by all means, but evaluated by default, no. -- Greg -- https://mail.python.org/mailman/listinfo/python-list
Re: type hinting backward compatibility with python 3.0 to 3.4
On Sun, May 21, 2017 at 3:30 PM, Gregory Ewing wrote: > Chris Angelico wrote: >> >> But since Python _does_ work with dynamic evaluation >> (which consequently demands that these kinds of things be expressions >> evaluated at compile time), it must by definition be possible to have >> side effects. > > > In most languages, type declarations are not expressions > and aren't evaluated at all in the usual sense, so questions > of evaluation order and side effects just don't apply. > > If we were designing a static typing system for Python from > scratch, I would be strongly arguing that type hints shouldn't > be expressions evaluated at run time, because it's such a > poor fit for the intended use. Introspectable by all means, > but evaluated by default, no. How do you declare that a parameter must be an instance of some class? Classes are themselves created at run time. Or would your typing system require that all types be created in some declarable way? ChrisA -- https://mail.python.org/mailman/listinfo/python-list
multiprocessing.Process can not start a thread in py2exe
p = multiprocessing.Process(target=helloconnect, args=(host,"",)) multiprocessing.Process can not start a thread in py2exe it can compile and run without error but it can not run function helloconnect -- https://mail.python.org/mailman/listinfo/python-list
Re: multiprocessing.Process can not start a thread in py2exe
i mean executable file can not run the multiprocessing thread after convert to executable file with py2exe On Sunday, May 21, 2017 at 2:09:04 PM UTC+8, Ho Yeung Lee wrote: > p = multiprocessing.Process(target=helloconnect, args=(host,"",)) > > multiprocessing.Process can not start a thread in py2exe > > it can compile and run without error > but it can not run function helloconnect -- https://mail.python.org/mailman/listinfo/python-list
AttributeError: 'module' object has no attribute 'urlretrieve' in window subsystem ubuntu bash for tensorflow
i use window subsystem ubuntu and install python 3 and tensorflow then when try deep learning https://www.tensorflow.org/tutorials/wide_and_deep got error when urlretrieve local directory in ubuntu in window tried urllib3 still have error import tempfile import pandas as pd import urllib as urllib import os model_dir = tempfile.mkdtemp() m = tf.contrib.learn.DNNLinearCombinedClassifier( model_dir=model_dir, linear_feature_columns=wide_columns, dnn_feature_columns=deep_columns, dnn_hidden_units=[100, 50]) ... urllib.urlretrieve(r"/mnt/c/Users/hello/Documents/data.csv", train_file.name) urllib.urlretrieve(r"/mnt/c/Users/hello/Documents/dataTest.csv", test_file.name) Traceback (most recent call last): File "", line 1, in AttributeError: 'module' object has no attribute 'urlretrieve' -- https://mail.python.org/mailman/listinfo/python-list
Re: multiprocessing.Process can not start a thread in py2exe
Did you call freeze_support() function after script start? https://docs.python.org/3/library/multiprocessing.html#multiprocessing.freeze_support -- https://mail.python.org/mailman/listinfo/python-list
Re: multiprocessing.Process can not start a thread in py2exe
On Sunday, May 21, 2017 at 2:40:49 PM UTC+8, top...@googlemail.com wrote: > Did you call freeze_support() function after script start? > https://docs.python.org/3/library/multiprocessing.html#multiprocessing.freeze_support no, i did not call freeze_support() -- https://mail.python.org/mailman/listinfo/python-list
Re: AttributeError: 'module' object has no attribute 'urlretrieve' in window subsystem ubuntu bash for tensorflow
Ho Yeung Lee wrote: > i use window subsystem ubuntu > and install python 3 and tensorflow > > then when try deep learning > > https://www.tensorflow.org/tutorials/wide_and_deep > > got error when urlretrieve local directory in ubuntu in window > > tried urllib3 still have error > > import tempfile > import pandas as pd > import urllib as urllib > import os > > model_dir = tempfile.mkdtemp() > m = tf.contrib.learn.DNNLinearCombinedClassifier( > model_dir=model_dir, > linear_feature_columns=wide_columns, > dnn_feature_columns=deep_columns, > dnn_hidden_units=[100, 50]) > > ... > > urllib.urlretrieve(r"/mnt/c/Users/hello/Documents/data.csv", > train_file.name) > urllib.urlretrieve(r"/mnt/c/Users/hello/Documents/dataTest.csv", > test_file.name) > > > Traceback (most recent call last): > File "", line 1, in > AttributeError: 'module' object has no attribute 'urlretrieve' If you're using python3, you need to do: from urllib.request import urlretrieve -- https://mail.python.org/mailman/listinfo/python-list
Re: multiprocessing.Process can not start a thread in py2exe
On Sunday, May 21, 2017 at 2:47:26 PM UTC+8, Ho Yeung Lee wrote: > On Sunday, May 21, 2017 at 2:40:49 PM UTC+8, top...@googlemail.com wrote: > > Did you call freeze_support() function after script start? > > https://docs.python.org/3/library/multiprocessing.html#multiprocessing.freeze_support > > > no, i did not call freeze_support() no matter i call it or not in the first line of main , it still can not run the thread function -- https://mail.python.org/mailman/listinfo/python-list
