Path / Listing and os.walk problem.
Hi So here is my problem: I have my render files that are into a directory like this: c:\log\renderfiles\HPO7_SEQ004_031_VDM_DIF_V001.0001.exr c:\log\renderfiles\HPO7_SEQ004_031_VDM_DIF_V001.0002.exr c:\log\renderfiles\HPO7_SEQ004_031_VDM_DIF_V001.0003.exr c:\log\renderfiles\HPO7_SEQ004_031_VDM_AMB_V001.0001.exr c:\log\renderfiles\HPO7_SEQ004_031_VDM_AMB_V001.0002.exr c:\log\renderfiles\HPO7_SEQ004_031_VDM_AMB_V001.0003.exr True is, there is like 1000 Files is the directory (C:\log\renderfiles\) What Iam looking to is to extract the first part of the filenames as a list, but I dont want the script to extract it 1000times, I mean I dont need it to extract HPO7_SEQ004_031_VDM_AMB 150 times, because there is 150 Frames. (not sure if its clear tought) so far, I would like the list to look lik: ["HPO7_SEQ004_031_VDM_DIF", "HPO7_SEQ004_031_VDM_AMB", etc...] I start to think about that, to try to use a for (path, dirs, files) in os.walk(path): list.append(files) but this kind of thing will just append the whole 1000 files, thing that I dont want, and more complicated I dont want the thing after "AMB" or "DIF" in the name files to follow. (thing I can delete using a split, if I read well ?) I trying to search on internet for answer, but seems I find nothing about it. Someone can help me with that please, show me the way or something ? Thank you ! :) -- http://mail.python.org/mailman/listinfo/python-list
OBAMA created by the CIA - Proofs by Wayne Madsen, the Investigative Journalist - Obama's StepMother Ruth Niedesand and two StepBrothers are JEW
OBAMA created by the CIA - Proofs by Wayne Madsen, the Investigative Journalist - Obama's StepMother Ruth Niedesand and two StepBrothers are JEW OBAMA family are CIA agents or employees http://www.presstv.ir/detail/140093.html http://www.voltairenet.org/article166741.html Special Report The Story of Obama: All in The Company (Part I) by Wayne Madsen* Investigative journalist Wayne Madsen has discovered CIA files that document the agency’s connections to institutions and individuals figuring prominently in the lives of Barack Obama and his mother, father, grandmother, and stepfather. The first part of his report highlights the connections between Barack Obama, Sr. and the CIA- sponsored operations in Kenya to counter rising Soviet and Chinese influence among student circles and, beyond, to create conditions obstructing the emergence of independent African leaders. 20 August 2010 From Washington D.C. (USA) Themes AfriCom: Control of Africa Biographies Barack Obama In 1983-84, Barack Obama worked as Editor at Business Internation Corporation, a Business International Corporation, a known CIA front company. President Obama’s own work in 1983 for Business International Corporation, a CIA front that conducted seminars with the world’s most powerful leaders and used journalists as agents abroad, dovetails with CIA espionage activities conducted by his mother, Stanley Ann Dunham in 1960s post-coup Indonesia on behalf of a number of CIA front operations, including the East-West Center at the University of Hawaii, the U.S. Agency for International Development (USAID), and the Ford Foundation. Dunham met and married Lolo Soetoro, Obama’s stepfather, at the East-West Center in 1965. Soetoro was recalled to Indonesia in 1965 to serve as a senior army officer and assist General Suharto and the CIA in the bloody overthrow of President Sukarno. Barack Obama, Sr., who met Dunham in 1959 in a Russian language class at the University of Hawaii, had been part of what was described as an airlift of 280 East African students to the United States to attend various colleges — merely “aided” by a grant from the Joseph P. Kennedy Foundation, according to a September 12, 1960, Reuters report from London. The airlift was a CIA operation to train and indoctrinate future agents of influence in Africa, which was becoming a battleground between the United States and the Soviet Union and China for influence among newly-independent and soon-to-be independent countries on the continent. The airlift was condemned by the deputy leader of the opposition Kenyan African Democratic Union (KADU) as favoring certain tribes — the majority Kikuyus and minority Luos — over other tribes to favor the Kenyan African National Union (KANU), whose leader was Tom Mboya, the Kenyan nationalist and labor leader who selected Obama, Sr. for a scholarship at the University of Hawaii. Obama, Sr., who was already married with an infant son and pregnant wife in Kenya, married Dunham on Maui on February 2, 1961 and was also the university’s first African student. Dunham was three month’s pregnant with Barack Obama, Jr. at the time of her marriage to Obama, Sr. KADU deputy leader Masinda Muliro, according to Reuters, said KADU would send a delegation to the United States to investigate Kenyan students who received “gifts” from the Americans and “ensure that further gifts to Kenyan students are administered by people genuinely interested in Kenya’s development.’” The CIA allegedly recruited Tom M’Boya in a heavily funded "selective liberation" programme to isolate Kenya’s founding President Jomo Kenyatta, whom the American spy agency labelled as "unsafe." Mboya received a $100,000 grant for the airlift from the Kennedy Foundation after he turned down the same offer from the U.S. State Department, obviously concerned that direct U.S. assistance would look suspicious to pro-Communist Kenyan politicians who suspected Mboya of having CIA ties. The Airlift Africa project was underwritten by the Kennedy Foundation and the African-American Students Foundation. Obama, Sr. was not on the first airlift but a subsequent one. The airlift, organized by Mboya in 1959, included students from Kenya, Uganda, Tanganyika, Zanzibar, Northern Rhodesia, Southern Rhodesia, and Nyasaland. Reuters also reported that Muliro charged that Africans were “disturbed and embittered” by the airlift of the selected students. Muliro “stated that “preferences were shown to two major tribes [Kikuyu and Luo] and many U.S.-bound students had failed preliminary and common entrance examinations, while some of those left behind held first-class certificates.” CIA-airlifted to Hawaii, Barack Obama Sr., with leis, stands with Stanley Dunham, President Obama’s grandfather, on his right. Obama, Sr. was a friend of Mboya and a fellow Luo. After Mboya was assassinated in 1969, Obama, Sr. testified at the trial of
Re: Newbie: Win32 COM problem
Yes, that was it. I just needed to restart the host process. Thanks "Mark Hammond" wrote in message news:mailman.51.1282784920.29448.python-l...@python.org... > On 25/08/2010 10:33 PM, Paul Hemans wrote: >>File "C:\development\PyXLS\pyXLS.py", line 13, in createSheet >> def createBook(self): >> AttributeError: WrapXLS instance has no attribute '_book' >> pythoncom error: Python error invoking COM method. >> >> Can anyone help? > > That line seems an unlikely source of the error. Note that as win32com > uses an in-process model by default, your problem may be that you changed > your implementation but didn't restart the hosting process - and therefore > are still using an earlier implementation. > > HTH, > > Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: Newbie: Win32 COM problem
On 25/08/2010 10:33 PM, Paul Hemans wrote: File "C:\development\PyXLS\pyXLS.py", line 13, in createSheet def createBook(self): AttributeError: WrapXLS instance has no attribute '_book' pythoncom error: Python error invoking COM method. Can anyone help? That line seems an unlikely source of the error. Note that as win32com uses an in-process model by default, your problem may be that you changed your implementation but didn't restart the hosting process - and therefore are still using an earlier implementation. HTH, Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: split string into multi-character "letters"
On 08/25/10 14:46, Jed wrote:
I would like to split the string 'churro' into a list containing:
'ch','u','rr','o'
Dirt simple, straightforward, easily generalized solution:
def sp_split(s):
n,i,ret = len(s), 0, []
while i < n:
s2 = s[i:i+2]
if s2 in ('ch', 'll', 'rr'):
ret.append(s2)
i += 2
else:
ret.append(s[i])
i += 1
return ret
print(sp_split('churro'))
#'ch', 'u', 'rr', 'o']
--
Terry Jan Reedy
--
http://mail.python.org/mailman/listinfo/python-list
Re: How far can stack [LIFO] solve do automatic garbage collection and prevent memory leak ?
On Aug 25, 4:01 pm, John Passaniti wrote: > On Aug 25, 5:01 pm, Joshua Maurice wrote: > > > I agree. Sadly, with managers, especially non-technical > > managers, it's hard to make this case when the weasel > > guy says "See! It's working.". > > Actually, it's not that hard. The key to communicating the true cost > of software development to non-technical managers (and even some > technical ones!) is to express the cost in terms of a metaphor they > can understand. Non-technical managers may not understand the > technology or details of software development, but they can probably > understand money. So finding a metaphor along those lines can help > them to understand. > > http://c2.com/cgi/wiki?WardExplainsDebtMetaphor > > I've found that explaining the need to improve design and code quality > in terms of a debt metaphor usually helps non-technical managers have > a very real, very concrete understanding of the problem. For example, > telling a non-technical manager that a piece of code is poorly written > and needs to be refactored may not resonate with them. To them, the > code "works" and isn't that the only thing that matters? But put in > terms of a debt metaphor, it becomes easier for them to see the > problem. But then it becomes a game of "How bad is this code exactly?" and "How much technical debt have we accrued?". At least in my company's culture, it is quite hard. -- http://mail.python.org/mailman/listinfo/python-list
Re: How far can stack [LIFO] solve do automatic garbage collection and prevent memory leak ?
On Aug 25, 5:01 pm, Joshua Maurice wrote: > I agree. Sadly, with managers, especially non-technical > managers, it's hard to make this case when the weasel > guy says "See! It's working.". Actually, it's not that hard. The key to communicating the true cost of software development to non-technical managers (and even some technical ones!) is to express the cost in terms of a metaphor they can understand. Non-technical managers may not understand the technology or details of software development, but they can probably understand money. So finding a metaphor along those lines can help them to understand. http://c2.com/cgi/wiki?WardExplainsDebtMetaphor I've found that explaining the need to improve design and code quality in terms of a debt metaphor usually helps non-technical managers have a very real, very concrete understanding of the problem. For example, telling a non-technical manager that a piece of code is poorly written and needs to be refactored may not resonate with them. To them, the code "works" and isn't that the only thing that matters? But put in terms of a debt metaphor, it becomes easier for them to see the problem. -- http://mail.python.org/mailman/listinfo/python-list
Re: matplotlib pyplot contourf with 1-D array (vector)
On Aug 25, 4:57 pm, becky_s wrote: > All, > > I’m having a problem with the matplotlib.pyplot.contourf function. I > have a 1-D array of latitudes (mesolat), a 1-D array of longitudes > (mesolon), and a 1-D array of rainfall values (rain) at those > corresponding lat, lon points. After importing the necessary > libraries, and reading in these 1-D arrays, I do the following > commands: > > p = Basemap(projection='lcc',llcrnrlon=-108.173,llcrnrlat=26.80, > urcrnrlon=-81.944664,urcrnrlat=45.730892, > lon_0=-97.00, lat_0=37.00, resolution='i') > > px,py = p(mesolon, mesolat) > > prplvls = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15] > > crain = p.contourf(px,py,rain,prplvls) > > At this point the contourf function returns an error saying “Input z > must be a 2D array.” However, based on the documentation (http:// > matplotlib.sourceforge.net/api/ > pyplot_api.html#matplotlib.pyplot.contourf) I thought that as long as > px, py, and rain are the same dimensions, everything should be fine. > Apparently that is not the case? If 1D arrays are not allowed in > contourf, then how can I change my data into a 2D array? > > Thanks in advance for the help. I neglected to mention that these are masked arrays, due to some missing data. I tried using numpy.griddata: mesolati = np.linspace(33.8,37.0,150) mesoloni = np.linspace(-94.5,-102.9,150) raini = griddata(mesolon,mesolat,rain,mesoloni,mesolati) but the raini array returned was entirely masked (no values). Thanks again, Becky -- http://mail.python.org/mailman/listinfo/python-list
matplotlib pyplot contourf with 1-D array (vector)
All, I’m having a problem with the matplotlib.pyplot.contourf function. I have a 1-D array of latitudes (mesolat), a 1-D array of longitudes (mesolon), and a 1-D array of rainfall values (rain) at those corresponding lat, lon points. After importing the necessary libraries, and reading in these 1-D arrays, I do the following commands: p = Basemap(projection='lcc',llcrnrlon=-108.173,llcrnrlat=26.80, urcrnrlon=-81.944664,urcrnrlat=45.730892, lon_0=-97.00, lat_0=37.00, resolution='i') px,py = p(mesolon, mesolat) prplvls = [0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15] crain = p.contourf(px,py,rain,prplvls) At this point the contourf function returns an error saying “Input z must be a 2D array.” However, based on the documentation (http:// matplotlib.sourceforge.net/api/ pyplot_api.html#matplotlib.pyplot.contourf) I thought that as long as px, py, and rain are the same dimensions, everything should be fine. Apparently that is not the case? If 1D arrays are not allowed in contourf, then how can I change my data into a 2D array? Thanks in advance for the help. -- http://mail.python.org/mailman/listinfo/python-list
Re: Overload print
On Wed, Aug 25, 2010 at 2:23 PM, Glenn Hutchings wrote: > On 25 Aug, 22:18, Ross Williamson > wrote: > > Is there anyway in a class to overload the print function? > > > > >> class foo_class(): > > >> pass > > >> cc = foo_class() > > >> print cc > > > > Gives: > > > > <__main__.foo_class instance at > > > > > Can I do something like: > > > > >> class foo_class(): > > >> def __print__(self): > > >> print "hello" > > >> cc = foo_class() > > >> print cc > > > > Gives: > > > > hello > > Yes. Just define the __str__ method, like this: > > class foo_class(): >def __str__(self): >return "hello" > -- > http://mail.python.org/mailman/listinfo/python-list > I'd recommend looking at both the __str__ and __repr__ functions at http://docs.python.org/reference/datamodel.html. Depending on your specific use case, its possible __repr__ may be perfered for you. -- http://mail.python.org/mailman/listinfo/python-list
Re: Overload print
Ross Williamson wrote: Hi All Is there anyway in a class to overload the print function? In Python <= 2.x "print" is a statement and thus can't be "overloaded". That's exactly the reason, why Python 3 has turned "print" into a function. class foo_class(): def __print__(self): print "hello" cc = foo_class() print cc Gives: hello Hmm, on what Python version are you? To my knowledge there is no __print__ special method. Did you mean __str__ or __repr__ ? I'm looking at finding nice way to print variables in a class just by asking to print it In Python3 you *can* overload print(), but still, you better define __str__() on your class to return a string, representing what ever you want: In [11]: class Foo(object): : def __str__(self): : return "foo" : : In [12]: f = Foo() In [13]: print f foo -- http://mail.python.org/mailman/listinfo/python-list
Re: Overload print
On Wed, 25 Aug 2010 16:18:15 -0500 Ross Williamson wrote: > Hi All > > Is there anyway in a class to overload the print function? Your terminology threw me off for a moment. You don't want to override print. You want to override the default representation of an object. > > >> class foo_class(): > >> pass > > >> cc = foo_class() > >> print cc > > Gives: > > <__main__.foo_class instance at > That's the default representation. > Can I do something like: > > >> class foo_class(): > >> def __print__(self): > >> print "hello" Close. Check this. >>> class foo_class(): ... def __repr__(self): ... return "hello" ... >>> x = foo_class() >>> x hello -- D'Arcy J.M. Cain | Democracy is three wolves http://www.druid.net/darcy/| and a sheep voting on +1 416 425 1212 (DoD#0082)(eNTP) | what's for dinner. -- http://mail.python.org/mailman/listinfo/python-list
Re: Overload print
On Wed, Aug 25, 2010 at 2:18 PM, Ross Williamson wrote: > Hi All > > Is there anyway in a class to overload the print function? > >>> class foo_class(): >>> pass > >>> cc = foo_class() >>> print cc > > Gives: > > <__main__.foo_class instance at > > > Can I do something like: > >>> class foo_class(): >>> def __print__(self): >>> print "hello" > >>> cc = foo_class() >>> print cc > > Gives: > > hello > > I'm looking at finding nice way to print variables in a class just by > asking to print it You want to overload the __str__() method: http://docs.python.org/reference/datamodel.html#object.__str__ Cheers, Chris -- http://blog.rebertia.com -- http://mail.python.org/mailman/listinfo/python-list
Re: Overload print
On 25 Aug, 22:18, Ross Williamson wrote: > Is there anyway in a class to overload the print function? > > >> class foo_class(): > >> pass > >> cc = foo_class() > >> print cc > > Gives: > > <__main__.foo_class instance at > > > Can I do something like: > > >> class foo_class(): > >> def __print__(self): > >> print "hello" > >> cc = foo_class() > >> print cc > > Gives: > > hello Yes. Just define the __str__ method, like this: class foo_class(): def __str__(self): return "hello" -- http://mail.python.org/mailman/listinfo/python-list
Re: How far can stack [LIFO] solve do automatic garbage collection and prevent memory leak ?
John Passaniti writes: > On Aug 24, 8:00 pm, Hugh Aguilar wrote: >> The C programmers reading this are likely wondering why I'm being >> attacked. The reason is that Elizabeth Rather has made it clear to >> everybody that this is what she wants: [http://tinyurl.com/2bjwp7q] > > Hello to those outside of comp.lang.forth, where Hugh usually leaves > his slime trail. I seriously doubt many people will bother to read > the message thread Hugh references, but if you do, you'll get to > delight in the same nonsense Hugh has brought to comp.lang.forth. > Here's the compressed version: I did :-). I have somewhat followed Forth from a far, far distance since the 80's (including hardware), and did read several messages in the thread, also since it was not clear what Hugh was referring to. -- John Bokma j3b Blog: http://johnbokma.com/Facebook: http://www.facebook.com/j.j.j.bokma Freelance Perl & Python Development: http://castleamber.com/ -- http://mail.python.org/mailman/listinfo/python-list
Overload print
Hi All Is there anyway in a class to overload the print function? >> class foo_class(): >> pass >> cc = foo_class() >> print cc Gives: <__main__.foo_class instance at > Can I do something like: >> class foo_class(): >> def __print__(self): >> print "hello" >> cc = foo_class() >> print cc Gives: hello I'm looking at finding nice way to print variables in a class just by asking to print it Cheers Ross -- Ross Williamson University of Chicago Department of Astronomy & Astrophysics 773-834-9785 (office) 312-504-3051 (Cell) -- http://mail.python.org/mailman/listinfo/python-list
Re: speed of numpy.power()?
Peter Pearson wrote: On Wed, 25 Aug 2010 06:59:36 -0700 (PDT), Carlos Grohmann wrote: > I'd like to hear from you on the benefits of using numpy.power(x,y) over (x*x*x*x..) Using the "dis" package under Python 2.5, I see that computing x_to_the_16 = x*x*x*x*x*x*x*x*x*x*x*x*x*x*x*x uses 15 multiplies. I hope that numpy.power does it with 4. Right. Square/multiply algorithm takes something like 2*(log2(y)) multiplies worst case. That should not only be faster, but quite likely more accurate, at least for non-integer x values and large enough integer y. DaveA -- http://mail.python.org/mailman/listinfo/python-list
Re: How far can stack [LIFO] solve do automatic garbage collection and prevent memory leak ?
On Aug 25, 1:44 pm, John Passaniti wrote: > On Aug 24, 9:05 pm, Hugh Aguilar wrote: > > > What about using what I learned to write programs that work? > > Does that count for anything? > > It obviously counts, but it's not the only thing that matters. Where > I'm employed, I am currently managing a set of code that "works" but > the quality of that code is poor. The previous programmer suffered > from a bad case of cut-and-paste programming mixed with a > unsophisticated use of the language. The result is that this code > that "works" is a maintenance nightmare, has poor performance, wastes > memory, and is very brittle. The high level of coupling between code > means that when you change virtually anything, it invariably breaks > something else. > > And then you have the issue of the programmer thinking the code > "works" but it doesn't actually meet the needs of the customer. The > same code I'm talking about has a feature where you can pass message > over the network and have the value you pass configure a parameter. > It "works" fine, but it's not what the customer wants. The customer > wants to be able to bump the value up and down, not set it to an > absolute value. So does the code "work"? Depends on the definition > of "work." > > In my experience, there are a class of software developers who care > only that their code "works" (or more likely, *appears* to work) and > think that is the gold standard. It's an attitude that easy for > hobbyists to take, but not one that serious professionals can afford > to have. A hobbyist can freely spend hours hacking away and having a > grand time writing code. Professionals are paid for their efforts, > and that means that *someone* is spending both time and money on the > effort. A professional who cares only about slamming out code that > "works" is invariably merely moving the cost of maintaining and > extending the code to someone else. It becomes a hidden cost, but why > do they care... it isn't here and now, and probably won't be their > problem. I agree. Sadly, with managers, especially non-technical managers, it's hard to make this case when the weasel guy says "See! It's working.". -- http://mail.python.org/mailman/listinfo/python-list
Re: split string into multi-character "letters"
Jed wrote:
Hi, I'm seeking help with a fairly simple string processing task.
I've simplified what I'm actually doing into a hypothetical
equivalent.
Suppose I want to take a word in Spanish, and divide it into
individual letters. The problem is that there are a few 2-character
combinations that are considered single letters in Spanish - for
example 'ch', 'll', 'rr'.
Suppose I have:
alphabet = ['a','b','c','ch','d','u','r','rr','o'] #this would include
the whole alphabet but I shortened it here
theword = 'churro'
I would like to split the string 'churro' into a list containing:
'ch','u','rr','o'
So at each letter I want to look ahead and see if it can be combined
with the next letter to make a single 'letter' of the Spanish
alphabet. I think this could be done with a regular expression
passing the list called "alphabet" to re.match() for example, but I'm
not sure how to use the contents of a whole list as a search string in
a regular expression, or if it's even possible. My real application
is a bit more complex than the Spanish alphabet so I'm looking for a
fairly general solution.
Thanks,
Jed
I don't know the Spanish alphabet, and you didn't say in what way
your real application is more complex, but maybe something like this
could be a starter:
In [13]: import re
In [14]: theword = 'churro'
In [15]: two_chars=["ch", "rr"]
In [16]: re.findall('|'.join(two_chars)+"|[a-z]", theword)
Out[16]: ['ch', 'u', 'rr', 'o']
--
http://mail.python.org/mailman/listinfo/python-list
Re: How far can stack [LIFO] solve do automatic garbage collection and prevent memory leak ?
On Aug 24, 9:05 pm, Hugh Aguilar wrote: > What about using what I learned to write programs that work? > Does that count for anything? It obviously counts, but it's not the only thing that matters. Where I'm employed, I am currently managing a set of code that "works" but the quality of that code is poor. The previous programmer suffered from a bad case of cut-and-paste programming mixed with a unsophisticated use of the language. The result is that this code that "works" is a maintenance nightmare, has poor performance, wastes memory, and is very brittle. The high level of coupling between code means that when you change virtually anything, it invariably breaks something else. And then you have the issue of the programmer thinking the code "works" but it doesn't actually meet the needs of the customer. The same code I'm talking about has a feature where you can pass message over the network and have the value you pass configure a parameter. It "works" fine, but it's not what the customer wants. The customer wants to be able to bump the value up and down, not set it to an absolute value. So does the code "work"? Depends on the definition of "work." In my experience, there are a class of software developers who care only that their code "works" (or more likely, *appears* to work) and think that is the gold standard. It's an attitude that easy for hobbyists to take, but not one that serious professionals can afford to have. A hobbyist can freely spend hours hacking away and having a grand time writing code. Professionals are paid for their efforts, and that means that *someone* is spending both time and money on the effort. A professional who cares only about slamming out code that "works" is invariably merely moving the cost of maintaining and extending the code to someone else. It becomes a hidden cost, but why do they care... it isn't here and now, and probably won't be their problem. > If I don't have a professor to pat me on the back, will my > programs stop working? What a low bar you set for yourself. Does efficiency, clarity, maintainability, extensibility, and elegance not matter to you? -- http://mail.python.org/mailman/listinfo/python-list
Re: Can PySerial's write method be called by multiple threads?
Hi John,
"John Nagle" wrote in message
news:4c75768a$0$1608$742ec...@news.sonic.net...
You don't need a queue, though; just use your own "write" function
with a lock.
Hmm... that would certainly work. I suppose it's even more efficient than a
queue in that the first thing the queue is going to do is to acquire a lock;
thanks for the idea!
def atomicwrite(fd, data) :
with lok :
fd.write(data)
Cool, I didn't know that threading.Lock() supported "with!" -- Just the other
day I was contemplating how one might go about duplicating the pattern in C++
where you do something like this:
{
Lock lok; // Constructor acquires lock, will be held until destructor
called (i.e., while lok remains in scope)
DoSomething();
} // Lock released
...clearly "with" does the job here.
---Joel
--
http://mail.python.org/mailman/listinfo/python-list
Re: split string into multi-character "letters"
On Wednesday 25 August 2010, it occurred to Jed to exclaim:
> Hi, I'm seeking help with a fairly simple string processing task.
> I've simplified what I'm actually doing into a hypothetical
> equivalent.
> Suppose I want to take a word in Spanish, and divide it into
> individual letters. The problem is that there are a few 2-character
> combinations that are considered single letters in Spanish - for
> example 'ch', 'll', 'rr'.
> Suppose I have:
>
> alphabet = ['a','b','c','ch','d','u','r','rr','o'] #this would include
> the whole alphabet but I shortened it here
> theword = 'churro'
>
> I would like to split the string 'churro' into a list containing:
>
> 'ch','u','rr','o'
>
> So at each letter I want to look ahead and see if it can be combined
> with the next letter to make a single 'letter' of the Spanish
> alphabet. I think this could be done with a regular expression
> passing the list called "alphabet" to re.match() for example, but I'm
> not sure how to use the contents of a whole list as a search string in
> a regular expression, or if it's even possible. My real application
> is a bit more complex than the Spanish alphabet so I'm looking for a
> fairly general solution.
A very simple solution that might be general enough:
>>> def tokensplit(string, bits):
... while string:
... for b in bits:
... if string.startswith(b):
... yield b
... string = string[len(b):]
... break
... else:
... raise ValueError("string not composed of the right bits.")
...
>>>
>>> alphabet = ['a','b','c','ch','d','u','r','rr','o']
>>> # move longer letters to the front
>>> alphabet.sort(key=len, reverse=True)
>>>
>>> list(tokensplit("churro", alphabet))
['ch', 'u', 'rr', 'o']
>>>
--
http://mail.python.org/mailman/listinfo/python-list
Re: split string into multi-character "letters"
On 08/25/10 14:46, Jed wrote:
Hi, I'm seeking help with a fairly simple string processing task.
I've simplified what I'm actually doing into a hypothetical
equivalent.
Suppose I want to take a word in Spanish, and divide it into
individual letters. The problem is that there are a few 2-character
combinations that are considered single letters in Spanish - for
example 'ch', 'll', 'rr'.
Suppose I have:
alphabet = ['a','b','c','ch','d','u','r','rr','o'] #this would include
the whole alphabet but I shortened it here
theword = 'churro'
I would like to split the string 'churro' into a list containing:
'ch','u','rr','o'
So at each letter I want to look ahead and see if it can be combined
with the next letter to make a single 'letter' of the Spanish
alphabet. I think this could be done with a regular expression
passing the list called "alphabet" to re.match() for example, but I'm
not sure how to use the contents of a whole list as a search string in
a regular expression, or if it's even possible.
My first attempt at the problem:
>>> import re
>>> special = ['ch', 'rr', 'll']
>>> r = re.compile(r'(?:%s)|[a-z]' % ('|'.join(re.escape(c) for
c in special)), re.I)
>>> r.findall('churro')
['ch', 'u', 'rr', 'o']
>>> [r.findall(word) for word in 'churro lorenzo caballo'.split()]
[['ch', 'u', 'rr', 'o'], ['l', 'o', 'r', 'e', 'n', 'z', 'o'],
['c', 'a', 'b', 'a', 'll', 'o']]
This joins escaped versions of all your special characters. Due
to the sequential nature used by Python's re module to handle "|"
or-branching, the paired versions get tested (and found) before
proceeding to the single-letters.
-tkc
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Re: split string into multi-character "letters"
On 25/08/2010 20:46, Jed wrote: Hi, I'm seeking help with a fairly simple string processing task. I've simplified what I'm actually doing into a hypothetical equivalent. Suppose I want to take a word in Spanish, and divide it into individual letters. The problem is that there are a few 2-character combinations that are considered single letters in Spanish - for example 'ch', 'll', 'rr'. Suppose I have: alphabet = ['a','b','c','ch','d','u','r','rr','o'] #this would include the whole alphabet but I shortened it here theword = 'churro' I would like to split the string 'churro' into a list containing: 'ch','u','rr','o' So at each letter I want to look ahead and see if it can be combined with the next letter to make a single 'letter' of the Spanish alphabet. I think this could be done with a regular expression passing the list called "alphabet" to re.match() for example, but I'm not sure how to use the contents of a whole list as a search string in a regular expression, or if it's even possible. My real application is a bit more complex than the Spanish alphabet so I'm looking for a fairly general solution. You can build a regex with: >>> '|'.join(alphabet) 'a|b|c|ch|d|u|r|rr|o' You want to try to match, say, 'ch' before 'c', so you want the longest first: >>> '|'.join(sorted(alphabet, key=len, reverse=True)) 'ch|rr|a|b|c|d|u|r|o' If you were going to match the Spanish alphabet then I would recommend that you do it in Unicode. Well, any text that's not pure ASCII should be done in Unicode! -- http://mail.python.org/mailman/listinfo/python-list
Re: split string into multi-character "letters"
Jed writes:
> alphabet = ['a','b','c','ch','d','u','r','rr','o'] #this would
> include the whole alphabet but I shortened it here
> theword = 'churro'
>
> I would like to split the string 'churro' into a list containing:
>
> 'ch','u','rr','o'
All non-overlapping matches, each as long as can be, and '.' catches
single characters by default:
>>> import re
>>> re.findall('ch|ll|rr|.', 'churro')
['ch', 'u', 'rr', 'o']
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Re: split string into multi-character "letters"
2010/8/25 Jed : > Hi, I'm seeking help with a fairly simple string processing task. > I've simplified what I'm actually doing into a hypothetical > equivalent. > Suppose I want to take a word in Spanish, and divide it into > individual letters. The problem is that there are a few 2-character > combinations that are considered single letters in Spanish - for > example 'ch', 'll', 'rr'. > Suppose I have: > > alphabet = ['a','b','c','ch','d','u','r','rr','o'] #this would include > the whole alphabet but I shortened it here > theword = 'churro' > > I would like to split the string 'churro' into a list containing: > > 'ch','u','rr','o' > > So at each letter I want to look ahead and see if it can be combined > with the next letter to make a single 'letter' of the Spanish > alphabet. I think this could be done with a regular expression > passing the list called "alphabet" to re.match() for example, but I'm > not sure how to use the contents of a whole list as a search string in > a regular expression, or if it's even possible. My real application > is a bit more complex than the Spanish alphabet so I'm looking for a > fairly general solution. > Thanks, > Jed > -- > http://mail.python.org/mailman/listinfo/python-list > Hi, I am not sure, whether it can be generalised enough for your needs, but you can try something like >>> re.findall(r"rr|ll|ch|[a-z]", "asdasdallasdrrcvb") ['a', 's', 'd', 'a', 's', 'd', 'a', 'll', 'a', 's', 'd', 'rr', 'c', 'v', 'b'] of course, the pattern should be adjusted precisely in order not to loose characters... hth, vbr -- http://mail.python.org/mailman/listinfo/python-list
Re: Can PySerial's write method be called by multiple threads?
On 8/25/2010 11:36 AM, Joel Koltner wrote:
I have a multi-threaded application where several of the threads need to
write to a serial port that's being handled by pySerial. If pySerial
thread-safe in the sense that pySerial.write behaves atomically? I.e.,
if thread 1 executes, serport.write("Hello, world!") and thread 2
executes serport.write("All your bases are belong to us!"), is it
guaranteed that the output over the serial port won't "mix" the two
together (e.g., "Hello All your bases are belong to us!, world!") ?
You're not guaranteed that one Python "write" maps to one OS-level
"write". Individual "print" statements in Python are not atomic.
You don't need a queue, though; just use your own "write" function
with a lock.
import threading
lok = threading.Lock()
def atomicwrite(fd, data) :
with lok :
fd.write(data)
John Nagle
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Re: How far can stack [LIFO] solve do automatic garbage collection and prevent memory leak ?
On Aug 24, 8:00 pm, Hugh Aguilar wrote:
> The C programmers reading this are likely wondering why I'm being
> attacked. The reason is that Elizabeth Rather has made it clear to
> everybody that this is what she wants: [http://tinyurl.com/2bjwp7q]
Hello to those outside of comp.lang.forth, where Hugh usually leaves
his slime trail. I seriously doubt many people will bother to read
the message thread Hugh references, but if you do, you'll get to
delight in the same nonsense Hugh has brought to comp.lang.forth.
Here's the compressed version:
1. Hugh references code ("symtab") that he wrote (in Factor) to
manage symbol tables.
2. I (and others) did some basic analysis and found it to be a poor
algorithm-- both in terms of memory use and performance-- especially
compared to the usual solutions (hash tables, splay trees, etc.).
3. I stated that symtab sucked for the intended application.
4. Hugh didn't like that I called his baby ugly and decided to expose
his bigotry.
5. Elizabeth Rather said she didn't appreciate Hugh's bigotry in the
newsgroup.
Yep, that's it. What Hugh is banking on is that you won't read the
message thread, and that you'll blindly accept that Elizabeth is some
terrible ogre with a vendetta against Hugh. The humor here is that
Hugh himself provides a URL that disproves that! So yes, if you care,
do read the message thread. It won't take long for you to get a clear
impression of Hugh's character.
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Re: Declare self.cursor
On 8/24/2010 10:15 AM, Dani Valverde wrote: Hello! I am working on a GUI to connect to a MySQL database using MySQLdb (code in attached file). I define the cursor in lines 55-66 in the OnLogin function within the LoginDlg class. /db= MySQLdb.connect(host='localhost', user=Username , passwd=pwd, db='Ornithobase') self.cursor = db.cursor()/ When I try to use the cursor on another part of the code (EditUser class, line 176) /sql = 'select substring_index(CURRENT_USER(),"@",1)' login.cursor.execute(sql)/ I get this error: /AttributeError: 'LoginDlg' object has no attribute 'cursor'/ You can check the code for details, I think is better. Cheers! Dani self.cursor = db.cursor() ... self.Destroy() # probably clears the object Also, it's generally better to hold on to the database handle and get a cursor from it as a local variable when needed. You need the database handle for "db.commit()", at least. Getting a cursor is fast. (Actually, in MySQL, there is only one cursor.) I realize it's a desktop application, but still: db= MySQLdb.connect(host='localhost', user='root' , passwd='acrsci00', db='Ornithobase') -- http://mail.python.org/mailman/listinfo/python-list
split string into multi-character "letters"
Hi, I'm seeking help with a fairly simple string processing task. I've simplified what I'm actually doing into a hypothetical equivalent. Suppose I want to take a word in Spanish, and divide it into individual letters. The problem is that there are a few 2-character combinations that are considered single letters in Spanish - for example 'ch', 'll', 'rr'. Suppose I have: alphabet = ['a','b','c','ch','d','u','r','rr','o'] #this would include the whole alphabet but I shortened it here theword = 'churro' I would like to split the string 'churro' into a list containing: 'ch','u','rr','o' So at each letter I want to look ahead and see if it can be combined with the next letter to make a single 'letter' of the Spanish alphabet. I think this could be done with a regular expression passing the list called "alphabet" to re.match() for example, but I'm not sure how to use the contents of a whole list as a search string in a regular expression, or if it's even possible. My real application is a bit more complex than the Spanish alphabet so I'm looking for a fairly general solution. Thanks, Jed -- http://mail.python.org/mailman/listinfo/python-list
Re: Can PySerial's write method be called by multiple threads?
"Thomas Jollans" wrote in message news:mailman.36.1282762569.29448.python-l...@python.org... I expect that it gives away the GIL to call the resident write() function, to allow other threads to run while it's sitting there, blocking. I haven't looked at the code, so maybe it doesn't hand over the GIL, but if it doesn't, I'd consider that a bug rather than a feature: the GIL shouldn't be abused as some kind of local mutex, and only gets in the way anyway. Ah, I expect you're correct. I'm still largely a Python newbie, and only know enough about things like the GIL to get myself into trouble. Speaking of the GIL, you shouldn't rely on it being there. Ever. It's a necessary evil, or it appears to be necessary. but nobody likes it and if somebody finds a good way to kick it out then that will happen. OK, but presumably I can't know whether or not someone who wrote a library like pySerial relied on it or not. Although I suppose this is really a documentation bug -- pySerial's documentation doesn't talk about multi-threaded access directly, although their "minicom" example does demonstrate it in action. Thanks for the help, ---Joel -- http://mail.python.org/mailman/listinfo/python-list
Re: Can PySerial's write method be called by multiple threads?
On 25/08/2010 19:36, Joel Koltner wrote:
I have a multi-threaded application where several of the threads need to
write to a serial port that's being handled by pySerial. If pySerial
thread-safe in the sense that pySerial.write behaves atomically? I.e.,
if thread 1 executes, serport.write("Hello, world!") and thread 2
executes serport.write("All your bases are belong to us!"), is it
guaranteed that the output over the serial port won't "mix" the two
together (e.g., "Hello All your bases are belong to us!, world!") ?
I looked at the source code, and the write method eventually boils down
to calling an the OS's "write" function, which presumably ends up being
a call to a C function. Given the global interpreter lock -- and
particularly how C functions can't be interrupted by the Python
interpreter at all -- it sure seems as though everything is copacetic here?
Don't assume that just because it calls a C function the GIL won't be
released. I/O calls which can take a relatively long time to complete
often release the GIL.
If not I can just add a queue and have everything go through it, but of
course I'd like to avoid the extra code and CPU cycles if it isn't at
all necessary.
Unless I know that something is definitely thread-safe, that would be
the way I would go.
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Re: Can PySerial's write method be called by multiple threads?
On Wednesday 25 August 2010, it occurred to Joel Koltner to exclaim:
> I have a multi-threaded application where several of the threads need to
> write to a serial port that's being handled by pySerial. If pySerial
> thread-safe in the sense that pySerial.write behaves atomically? I.e., if
> thread 1 executes, serport.write("Hello, world!") and thread 2 executes
> serport.write("All your bases are belong to us!"), is it guaranteed that
> the output over the serial port won't "mix" the two together (e.g., "Hello
> All your bases are belong to us!, world!") ?
>
> I looked at the source code, and the write method eventually boils down to
> calling an the OS's "write" function, which presumably ends up being a call
> to a C function. Given the global interpreter lock -- and particularly
> how C functions can't be interrupted by the Python interpreter at all --
> it sure seems as though everything is copacetic here?
I expect that it gives away the GIL to call the resident write() function, to
allow other threads to run while it's sitting there, blocking. I haven't
looked at the code, so maybe it doesn't hand over the GIL, but if it doesn't,
I'd consider that a bug rather than a feature: the GIL shouldn't be abused as
some kind of local mutex, and only gets in the way anyway.
Speaking of the GIL, you shouldn't rely on it being there. Ever. It's a
necessary evil, or it appears to be necessary. but nobody likes it and if
somebody finds a good way to kick it out then that will happen. (That happens
to be an explicit exception from the language moratorium, so it's not just my
own personal wishful thinking)
>
> If not I can just add a queue and have everything go through it, but of
> course I'd like to avoid the extra code and CPU cycles if it isn't at all
> necessary.
--
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Can PySerial's write method be called by multiple threads?
I have a multi-threaded application where several of the threads need to write
to a serial port that's being handled by pySerial. If pySerial thread-safe in
the sense that pySerial.write behaves atomically? I.e., if thread 1 executes,
serport.write("Hello, world!") and thread 2 executes serport.write("All your
bases are belong to us!"), is it guaranteed that the output over the serial
port won't "mix" the two together (e.g., "Hello All your bases are belong to
us!, world!") ?
I looked at the source code, and the write method eventually boils down to
calling an the OS's "write" function, which presumably ends up being a call to
a C function. Given the global interpreter lock -- and particularly how C
functions can't be interrupted by the Python interpreter at all -- it sure
seems as though everything is copacetic here?
If not I can just add a queue and have everything go through it, but of course
I'd like to avoid the extra code and CPU cycles if it isn't at all necessary.
Thank you,
---Joel Koltner
--
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Re: speed of numpy.power()?
On Wed, 25 Aug 2010 06:59:36 -0700 (PDT), Carlos Grohmann wrote: > > I'd like to hear from you on the benefits of using numpy.power(x,y) > over (x*x*x*x..) > Using the "dis" package under Python 2.5, I see that computing x_to_the_16 = x*x*x*x*x*x*x*x*x*x*x*x*x*x*x*x uses 15 multiplies. I hope that numpy.power does it with 4. -- To email me, substitute nowhere->spamcop, invalid->net. -- http://mail.python.org/mailman/listinfo/python-list
Re: speed of numpy.power()?
On 8/25/10 8:59 AM, Carlos Grohmann wrote: Hi all, I'd like to hear from you on the benefits of using numpy.power(x,y) over (x*x*x*x..) I looks to me that numpy.power takes more time to run. You will want to ask numpy questions on the numpy mailing list: http://www.scipy.org/Mailing_Lists The advantage that numpy.power(x,y) has over (x*x*x...) is that y can be floating point. We do not attempt to do strength reduction in the integer case. -- Robert Kern "I have come to believe that the whole world is an enigma, a harmless enigma that is made terrible by our own mad attempt to interpret it as though it had an underlying truth." -- Umberto Eco -- http://mail.python.org/mailman/listinfo/python-list
Re: problem with simple multiprocessing script on OS X
On Aug 24, 4:32 pm, Thomas Jollans wrote: > On Tuesday 24 August 2010, it occurred to Darren Dale to exclaim: > > > > > > > On Aug 23, 9:58 am, Darren Dale wrote: > > > The following script runs without problems on Ubuntu and Windows 7. > > > h5py is a package wrapping the hdf5 library (http://code.google.com/p/ > > > h5py/): > > > > from multiprocessing import Pool > > > import h5py > > > > def update(i): > > > print i > > > > def f(i): > > > "hello foo" > > > return i*i > > > > if __name__ == '__main__': > > > pool = Pool() > > > for i in range(10): > > > pool.apply_async(f, [i], callback=update) > > > pool.close() > > > pool.join() > > > > On OS X 10.6 (tested using python-2.6.5 from MacPorts), I have to > > > comment out the as-yet unused h5py import, otherwise I get a > > > traceback: > > What on earth is h5py doing there? If what you're telling us is actually > happening, and the code works 1:1 on Linux and Windows, but fails on OSX, and > you're using the same versions of h5py and Python, then the h5py > initialization code is not only enticing multiprocessing to try to pickle > something other than usual, but it is also doing that due to some platform- > dependent witchcraft, and I doubt there's very much separating the OSX > versions from the Linux versions of anything involved. Your analysis was spot on. About a year ago, I contributed a patch to h5py which checks to see if h5py is being imported into an active IPython session. If so, then a custom tab completer is loaded to make it easier to navigate hdf5 files. In the development version of IPython, a function that used to return None if there was no instance of an IPython interactive shell now creates and returns a new instance. This was the cause of the error I was reporting. If one were to install ipython from the master branch at github or from http://ipython.scipy.org/dist/testing/ipython-dev-nightly.tgz, then the following script will reproduce the problem. I'm not sure why this causes an error, but I'll discuss it with the IPython devs. Thank you Thomas and Benjamin for helping me understand the problem. Darren from multiprocessing import Pool import IPython.core.ipapi as ip ip.get() def update(i): print i def f(i): return i*i if __name__ == '__main__': pool = Pool() for i in range(10): pool.apply_async(f, [i], callback=update) pool.close() pool.join() -- http://mail.python.org/mailman/listinfo/python-list
Re: speed of numpy.power()?
On 25 ago, 12:40, David Cournapeau wrote: > On Wed, Aug 25, 2010 at 10:59 PM, Carlos Grohmann > Thanks David and Hrvoje. That was the feedback I was looking for. I am using numpy in my app but in some cases I will use math.pow(), as some tests with timeit showed that numpy.power was slower for (x*x*x*x*x). best Carlos -- http://mail.python.org/mailman/listinfo/python-list
Re: speed of numpy.power()?
On Wed, Aug 25, 2010 at 10:59 PM, Carlos Grohmann wrote: > Hi all, > > I'd like to hear from you on the benefits of using numpy.power(x,y) > over (x*x*x*x..) Without more context, I would say None if x*x*x*x*... works and you are not already using numpy. The point of numpy is mostly to work on numpy arrays, and to support types of data not "natively" supported by python (single, extended precision). If x is a python object such as int or float, numpy will also be much slower. Using numpy would make sense if for example you are already using numpy everywhere else, for consistency reason, David -- http://mail.python.org/mailman/listinfo/python-list
Re: How to see intermediate fail results from unittest as tests are running?
On Aug 18, 9:20 pm, Margie Roginski wrote: > Hi, > > I am using unittest in a fairly basic way, where I have a single file > that simply defines a class that inherits from unittest.TestCase and > then within that class I have a bunch of methods that start with > "test". Within that file, at the bottom I have: > > if __name__ == "__main__": > unittest.main() > > This works fine and it runs all of the testxx() methods in my file. > As it runs it prints if the tests passed or failed, but if they fail, > it does not print the details of the assert that made them fail. It > collects this info up and prints it all at the end. > > Ok - my question: Is there any way to get unittest to print the > details of the assert that made a test fail, as the tests are > running? IE, after a test fails, I would like to see why, rather than > waiting until all the tests are done. > > I've searched the doc and even looked at the code, and it seems the > answer is no, but I'm just wondering if I'm missing something. > > Thanks! > > Margie trial (Twisted's test runner) has a `--rterrors` option which causes it to display errors as soon as they happen. Jean-Paul -- http://mail.python.org/mailman/listinfo/python-list
Re: staticmethod behaviour
On Aug 25, 4:32 pm, Peter Otten <__pete...@web.de> wrote: > Samu wrote: > > the concept sticks. But why does it have a different behaviour the > > staticmethod with the "rights3" case then? > > Moving from staticmethod to standalone function doesn't affect the output. > You have inadvertently changed something else. > > Peter Absolutely right. Thank you very much for your time and answers, Peter :) It helped me a lot! -- http://mail.python.org/mailman/listinfo/python-list
Re: speed of numpy.power()?
Carlos Grohmann writes: > I'd like to hear from you on the benefits of using numpy.power(x,y) > over (x*x*x*x..) > > I looks to me that numpy.power takes more time to run. You can use math.pow, which is no slower than repeated multiplication, even for small exponents. Obviously, after the exponent has grown large enough, numpy.power becomes faster than repeated exponentiation (it's already faster at 100). Like math.pow, it supports negative and non-integer exponents. Unlike math.pow, numpy.power also supports all kinds of interesting objects as bases for exponentiation. -- http://mail.python.org/mailman/listinfo/python-list
Re: How far can stack [LIFO] solve do automatic garbage collection and prevent memory leak ?
On 19 Aug, 16:25, c...@tiac.net (Richard Harter) wrote: > On Wed, 18 Aug 2010 01:39:09 -0700 (PDT), Nick Keighley > wrote: > >On 17 Aug, 18:34, Standish P wrote: > >> How are these heaps being implemented ? Is there some illustrative > >> code or a book showing how to implement these heaps in C for example ? > > >any book of algorithms I'd have thought my library is currently inaccessible. Normally I'd have picked up Sedgewick and seen what he had to say on the subject. And possibly Knuth (though that requires taking more of a deep breath). Presumably Plauger's library book includes an implementation of malloc()/free() so that might be a place to start. > >http://en.wikipedia.org/wiki/Dynamic_memory_allocation > >http://www.flounder.com/inside_storage_allocation.htm > > >I've no idea how good either of these is serves me right for not checking :-( > The wikipedia page is worthless. odd really, you'd think basic computer science wasn't that hard... I found even wikipedia's description of a stack confusing and heavily biased towards implementation > The flounder page has > substantial meat, but the layout and organization is a mess. A > quick google search didn't turn up much that was general - most > articles are about implementations in specific environments. -- http://mail.python.org/mailman/listinfo/python-list
Re: staticmethod behaviour
Samu wrote: > the concept sticks. But why does it have a different behaviour the > staticmethod with the "rights3" case then? Moving from staticmethod to standalone function doesn't affect the output. You have inadvertently changed something else. Peter -- http://mail.python.org/mailman/listinfo/python-list
Re: CRIMINAL YanQui MARINES Cesar Laurean Regularly RAPE GIRLS Maria Lauterbach and KILL THEM - CIA/Mossad/Jew did 911 - Wikileaks for ever CRIMES of YANQUI Bustards
On Aug 25, 7:12 am, nanothermite911fbibustards wrote: > CRIMINAL YanQui MARINES Cesar Laurean Regularly RAPE GIRLS Maria > Lauterbach and KILL THEM > > Is he a Jew or a white Anglo Saxon race ? or a Southern Baptist > Bustard who > > The girl was a German like the one Roman Polansky raped, Semantha > Geimer > > http://www.cnn.com/2010/CRIME/08/23/north.carolina.marine.murder/ > > Look at his face, what criminal race is he ? What goes around comes > around !!! > > Former Marine convicted in North Carolina of killing female colleague > By the CNN Wire Staff > August 23, 2010 8:33 p.m. EDT > > For more on this story, read the coverage from CNN affiliate WRAL. > > (CNN) -- Former U.S. Marine Cesar Laurean was convicted in North > Carolina on Monday of first degree murder in the 2007 death of Lance > Cpl. Maria Lauterbach, who was eight months pregnant when she died. > > An autopsy showed that Lauterbach, 20, died of blunt force trauma to > the head. Police unearthed her charred body from beneath a barbecue > pit in Laurean's backyard in January 2008. She had disappeared the > month before. > > Laurean, who was dressed in black slacks and wore a white shirt and > black tie, did not show any emotion as the judge read his sentence of > life in prison without parole. He either said or mouthed something to > someone in the audience of the courtroom before he was led out in > handcuffs, video showed. > > Laurean and Lauterbach were stationed together at Camp Lejeune, North > Carolina. > > North Carolina prosecutors alleged Laurean killed Lauterbach on > December 14 and used her ATM card 10 days later before fleeing to > Mexico.Laurean was arrested there in April 2008. He holds dual > citizenship in the United States and Mexico. > > Before her death, Lauterbach told the Marines that Laurean had raped > her. Laurean denied it, and disappeared just a few weeks before a > scheduled rape hearing at Camp LeJeune. > > The DNA of Lauterbach's unborn child did not match that of Laurean, > according to law enforcement personnel. > > Authorities found Lauterbach's body after Laurean's wife, Christina, > produced a note her husband had written claiming the 20-year-old > woman > slit her own throat during an argument, according to officials. > > Although a gaping 4-inch wound was found on the left side of > Lauterbach's neck, autopsy results indicated that the wound itself > would not have been fatal and may have occurred after death. > > Asked by a Mexican reporter at the time of his arrest whether he > killed Lauterbach, Laurean replied, "I loved her." > > Laurean's lawyer said his client would appeal the decision. > > / > > The MARINE BASTARD will probably claim INSANITY > > // > The FAT per DIEM FBI bustards use our TAX PAYER MONEY and > INCOMPETENCE > is UNACCEPTABLE. > > = > > http://www.youtube.com/watch?v=lX18zUp6WPY > > http://www.youtube.com/watch?v=XQapkVCx1HI > > http://www.youtube.com/watch?v=tXJ-k-iOg0M > > Hey Racist and INcompetent FBI Bustards, where is the ANTHRAX > Mailer ? > Where are the 4 blackboxes ? Where are the Pentagon Videos ? Why did > you release the 5 dancing Israelis compromising the whole 911 > investigation ? If the Dubai Police can catch Mossad Murderers and > put > the videos and Iranian Police can why cant you put the Pentagon > Videos ? If Iran police can put the AMERICAN TERRORIST, Riggi and > puting on INTERNATIONAL MEDIA a day after catching him without > TORTURE, why cant you put the INNOCENT patsies on the MEDIA. Why did > you have to LIE about Dr Afiya Siddiqui and torture that Innocent > little mother of 3 and smashing the skull of her one child ? > > http://www.youtube.com/watch?v=DhMcii8smxkhttp://www.youtube.com/watch?v=0SZ2lxDJmdg > > There are CRIMINAL cases against CIA CRIMINAL Bustards in Italian > courts. > > FBI bustards paid a penalty of $5.8 million to Steven Hatfill, but > only because he was a white. They got away with MURDER of thousands > of > Non-whites in all parts of the world. > > Daily 911 news :http://911blogger.com > > http://www.youtube.com/watch?v=tRfhUezbKLw > > http://www.youtube.com/watch?v=x7kGZ3XPEm4 > > http://www.youtube.com/watch?v=lX18zUp6WPY > > Conclusion : FBI bustards are RACIST and INcompetent. They could > neither catch the ANTHRAX or 911 YANK/Jew criminals nor could they > cover them up - whichever was their actual goal or task. > > SLASH the SALARIES of FBI/CIA/NSA etc BUSTARDS into half all across > tbe board, esp the whites/jew on the top. > > FBI Bustards failed to Catch BERNARD MADOFF even after that RACIST > and > UNPATRIOTIC Act > FBI bustards failed to prevent ROMAN POLANSKY from absconding to > europe and rapes. > FBI bustards failed to prevent OKLAHOMA > > --http://mail.python.org/mailman/listinfo/python-list ... so you want to render this in TeX ... ? -- http://mail.python.org/mailman/listinfo/python-list
Python2.4 on ARM-Linux "import time module fails"
Hi, I cross-compiled Python2.4 for ARM (Linux 2.6.30) in order to run autotest-client-xxx on my ARM target. When I run autotest on ARM target I get "ImportError: No module named time" Which package I need to install to add support for time module. # bin/autotest samples/filesystem Traceback (most recent call last): File "bin/autotest", line 6, in ? import common File "/dtv/usb/sda1/autotest-client-0.12.0-dirty/bin/common.py", line 8, in ? root_module_name="autotest_lib.client") File "/dtv/usb/sda1/autotest-client-0.12.0-dirty/setup_modules.py", line 139, in setup _monkeypatch_logging_handle_error() File "/dtv/usb/sda1/autotest-client-0.12.0-dirty/setup_modules.py", line 103, in _monkeypatch_logging_handle_error import logging File "/dtv/usb/sda1/Python-2.4/Lib/logging/__init__.py", line 29, in ? import sys, os, types, time, string, cStringIO ImportError: No module named time With Regards Ajeet Yadav -- http://mail.python.org/mailman/listinfo/python-list
Re: speed of numpy.power()?
On 25/08/2010 14:59, Carlos Grohmann wrote: Hi all, I'd like to hear from you on the benefits of using numpy.power(x,y) over (x*x*x*x..) I looks to me that numpy.power takes more time to run. cheers Carlos Measure it yourself using the timeit module. Cheers. Mark Lawrence. -- http://mail.python.org/mailman/listinfo/python-list
speed of numpy.power()?
Hi all, I'd like to hear from you on the benefits of using numpy.power(x,y) over (x*x*x*x..) I looks to me that numpy.power takes more time to run. cheers Carlos -- http://mail.python.org/mailman/listinfo/python-list
Re: staticmethod behaviour
On Aug 25, 3:26 pm, Peter Otten <__pete...@web.de> wrote:
> Samu wrote:
> > Hi,
>
> > I run today into some problems with my code and I realized that there
> > is something in the behaviours of the @staticmethod that I don't
> > really understand. I don't know if it is an error or not, actually,
> > only that it was, definitely, unexpected.
>
> > I wrote a small demo of what happens.
> > The code:
> > class User:
> > def __init__(self, id=None, rights=[], rights2=[], rights3=[]):
> > self.id = id
> > self.rights = rights
> > self.rights2 = rights2
> > self.rights3 = rights3
> > �...@staticmethod
> > def cr_user():
> > user = User(1, ['read'], rights3=[])
> > user.rights.append('write')
> > user.rights2.append('write2')
> > user.rights3.append('write3')
> > return user
>
> > print "User created with static: id, rights, rights2"
> > a = User.cr_user()
> > print a.id, a.rights, a.rights2, a.rights3
> > print "User created with User()"
> > b = User()
> > print b.id, b.rights, b.rights2, a.rights3
> > The answer I get:
> > User created with static: id, rights, rights2
> > 1 ['read', 'write'] ['write2'] ['write3']
> > User created with User()
> > None [] ['write2'] ['write3']
>
> > I was expecting either all arrays from the second to be [] or to be a
> > copy of the first one.
>
> > If someone can provide an explanation, I would be thankful :)
>
> The problem is not the staticmethod, it's the mutable default values for
> __init__(). See
>
> http://effbot.org/zone/default-values.htm
>
> Peter
Ahh, thank you very much for the link. Now I understand. I remember
having read that before, but it is not until you face the problem that
the concept sticks. But why does it have a different behaviour the
staticmethod with the "rights3" case then?
--
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Re: problem with simple multiprocessing script on OS X
On Aug 24, 4:32 pm, Thomas Jollans wrote: > On Tuesday 24 August 2010, it occurred to Darren Dale to exclaim: > > > > > > > On Aug 23, 9:58 am, Darren Dale wrote: > > > The following script runs without problems on Ubuntu and Windows 7. > > > h5py is a package wrapping the hdf5 library (http://code.google.com/p/ > > > h5py/): > > > > from multiprocessing import Pool > > > import h5py > > > > def update(i): > > > print i > > > > def f(i): > > > "hello foo" > > > return i*i > > > > if __name__ == '__main__': > > > pool = Pool() > > > for i in range(10): > > > pool.apply_async(f, [i], callback=update) > > > pool.close() > > > pool.join() > > > > On OS X 10.6 (tested using python-2.6.5 from MacPorts), I have to > > > comment out the as-yet unused h5py import, otherwise I get a > > > traceback: > > What on earth is h5py doing there? If what you're telling us is actually > happening, and the code works 1:1 on Linux and Windows, but fails on OSX, and > you're using the same versions of h5py and Python, then the h5py > initialization code is not only enticing multiprocessing to try to pickle > something other than usual, but it is also doing that due to some platform- > dependent witchcraft, and I doubt there's very much separating the OSX > versions from the Linux versions of anything involved. I can't find anything in the source to suggest that h5py is doing any platform-specific magic. Do you have an idea of how it would be possible for initialization code to cause multiprocessing to try to pickle something it normally would not? > > This is a really critical bug for me, but I'm not sure how to proceed. > > Can I file a bug report on the python bugtracker if the only code I > > can come up with to illustrate the problem requires a lame import of a > > third party module? > > I doubt this is an issue with Python. File a bug on the h5py tracker and see > what they say. The people there might at least have some vague inkling of what > may be going on. Thanks for the suggestion. I was in touch with the h5py maintainer before my original post. We don't have any leads. -- http://mail.python.org/mailman/listinfo/python-list
Re: Help please! strange Tkinter behavior has me totally baffled.
Thanks mucho! That was it! -- Steve Ferg -- http://mail.python.org/mailman/listinfo/python-list
Re: problem with simple multiprocessing script on OS X
On Aug 24, 5:29 pm, Benjamin Kaplan wrote: > On Tue, Aug 24, 2010 at 3:31 PM, Darren Dale wrote: > > On Aug 23, 9:58 am, Darren Dale wrote: > >> The following script runs without problems on Ubuntu and Windows 7. > >> h5py is a package wrapping the hdf5 library (http://code.google.com/p/ > >> h5py/): > > >> from multiprocessing import Pool > >> import h5py > > >> def update(i): > >> print i > > >> def f(i): > >> "hello foo" > >> return i*i > > >> if __name__ == '__main__': > >> pool = Pool() > >> for i in range(10): > >> pool.apply_async(f, [i], callback=update) > >> pool.close() > >> pool.join() > > >> On OS X 10.6 (tested using python-2.6.5 from MacPorts), I have to > >> comment out the as-yet unused h5py import, otherwise I get a > >> traceback: > > >> Exception in thread Thread-1: > >> Traceback (most recent call last): > >> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ > >> lib/python2.6/threading.py", line 532, in __bootstrap_inner > >> self.run() > >> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ > >> lib/python2.6/threading.py", line 484, in run > >> self.__target(*self.__args, **self.__kwargs) > >> File "/opt/local/Library/Frameworks/Python.framework/Versions/2.6/ > >> lib/python2.6/multiprocessing/pool.py", line 226, in _handle_tasks > >> put(task) > >> PicklingError: Can't pickle : attribute lookup > >> __builtin__.function failed > > > This is a really critical bug for me, but I'm not sure how to proceed. > > Can I file a bug report on the python bugtracker if the only code I > > can come up with to illustrate the problem requires a lame import of a > > third party module? > > -- > > It's working fine for me, OS X 10.6.4, Python 2.6 and h5py from Macports. Really? With the h5py import uncommented? I just uninstalled and reinstalled my entire macports python26/py26-numpy/hdf5-18/py26-h5py stack, and I still see the same error. -- http://mail.python.org/mailman/listinfo/python-list
Re: staticmethod behaviour
Samu wrote:
> Hi,
>
> I run today into some problems with my code and I realized that there
> is something in the behaviours of the @staticmethod that I don't
> really understand. I don't know if it is an error or not, actually,
> only that it was, definitely, unexpected.
>
> I wrote a small demo of what happens.
> The code:
> class User:
> def __init__(self, id=None, rights=[], rights2=[], rights3=[]):
> self.id = id
> self.rights = rights
> self.rights2 = rights2
> self.rights3 = rights3
> @staticmethod
> def cr_user():
> user = User(1, ['read'], rights3=[])
> user.rights.append('write')
> user.rights2.append('write2')
> user.rights3.append('write3')
> return user
>
> print "User created with static: id, rights, rights2"
> a = User.cr_user()
> print a.id, a.rights, a.rights2, a.rights3
> print "User created with User()"
> b = User()
> print b.id, b.rights, b.rights2, a.rights3
> The answer I get:
> User created with static: id, rights, rights2
> 1 ['read', 'write'] ['write2'] ['write3']
> User created with User()
> None [] ['write2'] ['write3']
>
> I was expecting either all arrays from the second to be [] or to be a
> copy of the first one.
>
> If someone can provide an explanation, I would be thankful :)
The problem is not the staticmethod, it's the mutable default values for
__init__(). See
http://effbot.org/zone/default-values.htm
Peter
--
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Re: staticmethod behaviour
On Aug 25, 3:03 pm, Samu wrote:
> Hi,
>
> I run today into some problems with my code and I realized that there
> is something in the behaviours of the @staticmethod that I don't
> really understand. I don't know if it is an error or not, actually,
> only that it was, definitely, unexpected.
>
> I wrote a small demo of what happens.
>
> The code:http://dpaste.com/hold/233795/
>
> The answer I get:
> User created with static: id, rights, rights2
> 1 ['read', 'write'] ['write2'] ['write3']
> User created with User()
> None [] ['write2'] ['write3']
>
> I was expecting either all arrays from the second to be [] or to be a
> copy of the first one.
>
> If someone can provide an explanation, I would be thankful :)
>
> Regards,
> Samu
In addition, if I don't define the function as static, but either as a
method of the object or a function outside of the class, something
like this:
def cr_user():
user = User(1, ['read'], rights3=[])
user.rights.append('write')
user.rights2.append('write2')
user.rights3.append('write3')
return user
I get instead:
User created with static: id, rights, rights2
1 ['read', 'write'] ['write2'] ['write3']
User created with User()
None [] ['write2'] []
There is some (maybe deep) concept that I don't get it seems, because
that output puzzles me...
--
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staticmethod behaviour
Hi, I run today into some problems with my code and I realized that there is something in the behaviours of the @staticmethod that I don't really understand. I don't know if it is an error or not, actually, only that it was, definitely, unexpected. I wrote a small demo of what happens. The code: http://dpaste.com/hold/233795/ The answer I get: User created with static: id, rights, rights2 1 ['read', 'write'] ['write2'] ['write3'] User created with User() None [] ['write2'] ['write3'] I was expecting either all arrays from the second to be [] or to be a copy of the first one. If someone can provide an explanation, I would be thankful :) Regards, Samu -- http://mail.python.org/mailman/listinfo/python-list
Re: How far can stack [LIFO] solve do automatic garbage collection and prevent memory leak ?
Alex McDonald writes: > Your example of writing code with >memory leaks *and not caring because it's a waste of your time* makes >me think that you've never been a programmer of any sort. Ever. Well, I find his approach towards memory leaks as described in <779b992b-7199-4126-bf3a-7ec40ea80...@j18g2000yqd.googlegroups.com> quite sensible, use something like that myself, and recommend it to others. Followups set to c.l.f (adjust as appropriate). - anton -- M. Anton Ertl http://www.complang.tuwien.ac.at/anton/home.html comp.lang.forth FAQs: http://www.complang.tuwien.ac.at/forth/faq/toc.html New standard: http://www.forth200x.org/forth200x.html EuroForth 2010: http://www.euroforth.org/ef10/ -- http://mail.python.org/mailman/listinfo/python-list
Newbie: Win32 COM problem
Simple class to wrap the xlwt module for COM access
pyXLS.py:
from xlwt import Workbook
class WrapXLS:
_reg_clsid_ = "{c94df6f0-b001-11df-8d63-00e09103a9a0}"
_reg_desc_ = "XLwt wrapper"
_reg_progid_ = "PyXLS.Write"
_public_methods_ =
['createBook','createSheet','writeSheetCell','saveBook']
# _public_attrs_ = ['book']
def __init__(self):
self.book = None
def createBook(self):
self.book = Workbook()
def createSheet(self,sheetName):
self.book.add_sheet(sheetName)
def writeSheetCell(self, sheet, row, col, value, style=""):
sheet = self.book.get_sheet(sheet)
sheet.write(row,col,value,style)
def saveBook(self,fileName):
self.book.save(fileName)
if __name__=='__main__':
import win32com.server.register
win32com.server.register.UseCommandLine(WrapXLS)
It registers ok with --debug. Code executing within Foxpro (no comments
pls):
oPyXLS = CREATEOBJECT("PyXLS.Write")
oPyXLS.createBook()
oPyXLS.createSheet("Sheet 1")-- Error here
Output in Python Trace Collector (PythonWin):
...
in _GetIDsOfNames_ with '(u'createsheet',)' and '1033'
in _Invoke_ with 1001 1033 3 (u'Sheet 1',)
Traceback (most recent call last):
File "C:\Python26\lib\site-packages\win32com\server\dispatcher.py", line
47, in _Invoke_
return self.policy._Invoke_(dispid, lcid, wFlags, args)
File "C:\Python26\lib\site-packages\win32com\server\policy.py", line 277,
in _Invoke_
return self._invoke_(dispid, lcid, wFlags, args)
File "C:\Python26\lib\site-packages\win32com\server\policy.py", line 282,
in _invoke_
return S_OK, -1, self._invokeex_(dispid, lcid, wFlags, args, None, None)
File "C:\Python26\lib\site-packages\win32com\server\policy.py", line 585,
in _invokeex_
return func(*args)
File "C:\development\PyXLS\pyXLS.py", line 13, in createSheet
def createBook(self):
AttributeError: WrapXLS instance has no attribute '_book'
pythoncom error: Python error invoking COM method.
Can anyone help?
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Simple hack to get *$5000* to your Paypal account
Simple hack to get* $5000 * to your Paypal account At http://moneyforwarding.co.cc i have hidden the Paypal Form link in an image. in that website on Right Side below search box, click on image and enter your name and Paypal ID. -- http://mail.python.org/mailman/listinfo/python-list
Re: ftplib limitations?
Hi durumdara, On 2010-08-25 11:18, durumdara wrote: > On aug. 25, 08:07, Stefan Schwarzer wrote: >> >> The file is 2 GB in size and is fully transferred, without >> blocking or an error message. The status message from the >> server is '226-File successfully transferred\n226 31.760 >> seconds (measured here), 64.48 Mbytes per second', so this >> looks ok, too. >> >> I think your problem is related to the FTP server or its >> configuration. >> >> Have you been able to reproduce the problem? > > Yes. I tried with saving the file, but I also got this error. > but: Total COmmander CAN download the file, and ncftpget also can > download it without problem... I suppose they do the same as in my former suggestion: "catching" the error and ignoring it. ;-) After all, if I understood you correctly, you get the complete file contents, so with ftplib the download succeeds as well (in a way). You might want to do something like (untested): import os import socket import ftputil def my_download(host, filename): """Some intelligent docstring.""" # Need timestamp to check if we actually have a new # file after the attempted download try: old_mtime = os.path.getmtime(filename) except OSError: old_mtime = 0.0 try: host.download(filename, filename, 'b') except socket.error: is_rewritten = (os.path.getmtime(filename) != old_mtime) # If you're sure that suffices as a test is_complete = (host.path.getsize(filename) == os.path.getsize(filename)) if is_rewritten and is_complete: # Transfer presumably successful, ignore error pass else: # Something else went wrong raise def main(): host = ftputil.FTPHost(...) my_download(host, "large_file") host.close() If you don't want to use an external library, you can use `ftplib.FTP`'s `retrbinary` and check the file size with `ftplib.FTP.size`. This size command requires support for the SIZE command on the server, whereas ftputil parses the remote directory listing to extract the size and so doesn't depend on SIZE support. Stefan -- http://mail.python.org/mailman/listinfo/python-list
Re: How far can stack [LIFO] solve do automatic garbage collection and prevent memory leak ?
On 25 Aug, 01:00, Hugh Aguilar wrote: > On Aug 24, 4:17 pm, Richard Owlett wrote: > > > Hugh Aguilar wrote: > > > [SNIP ;] > > > > The real problem here is that C, Forth and C++ lack automatic garbage > > > collection. If I have a program in which I have to worry about memory > > > leaks (as described above), I would be better off to ignore C, Forth > > > and C++ and just use a language that supports garbage collection. Why > > > should I waste my time carefully freeing up heap space? I will very > > > likely not find everything but yet have a few memory leaks anyway. > > > IOW Hugh has surpassed GIGO to achieve AGG - > > *A*utomatic*G*arbage*G*eneration ;) > > The C programmers reading this are likely wondering why I'm being > attacked. The reason is that Elizabeth Rather has made it clear to > everybody that this is what she > wants:http://groups.google.com/group/comp.lang.forth/browse_thread/thread/c... > > Every Forth programmer who aspires to get a job at Forth Inc. is > obliged to attack me. Attacking my software that I posted on the FIG > site is preferred, but personal attacks work too. It is a loyalty > test. Complete bollox. A pox on your persecution fantasies. This isn't about Elizabeth Rather or Forth Inc. It's about your massive ego and blind ignorance. Your example of writing code with memory leaks *and not caring because it's a waste of your time* makes me think that you've never been a programmer of any sort. Ever. In a commercial environment, your slide rule code would be rejected during unit testing, and you'd be fired and your code sent to the bit bucket. This isn't about CS BS; this is about making sure that banks accounts square, that planes fly, that nuclear reactors stay sub-critical; that applications can run 24 by 7, 365 days a year without requiring any human attention. So who designs and writes compilers for fail-safe systems? Who designs and writes operating systems that will run for years, non-stop? Where do they get the assurance that what they're writing is correct -- and provably so? From people that do research, hard math, have degrees, and design algorithms and develop all those other abstract ideas you seem so keen to reject as high-falutin' nonsense. I'd rather poke myself in the eye than run any of the crap you've written. -- http://mail.python.org/mailman/listinfo/python-list
Re: Helper classes design question
On Tue, 24 Aug 2010, Jean-Michel Pichavant wrote:
> John O'Hagan wrote:
> > I want to know the best way to organise a bunch of functions designed to
> > operate on instances of a given class without cluttering the class itself
> > with a bunch of unrelated methods.
> >
> > What I've done is make what I think are called helper classes, each of
> > which are initialized with an instance of the main class and has methods
> > which are all of the same type (insofar as they return a boolean, or
> > modify the object in place, or whatever).
> >
> > I'm not sure if I'm on the right track here design-wise. Maybe this could
> > be better done with inheritance (not my forte), but my first thought is
> > that no, the helper classes (if that's what they are) are not actually a
> > type of the main class, but are auxiliary to it.
I wasn't subscribed when I posted this question so the quoting and threading
is messed up (sorry), but thanks for the differing approaches; in the end I
have taken Peter Otten's advice and simply put the functions in separate
modules according to type (instead of in classes as methods), then imported
them. This has all the advantages of using a class, in that I can add new
functions in just one place and call them as required without knowing what
they are, e.g.:
options = {dictionary of option names and values} #derived from optparse
for sequence in sequences:
for option, value in options.items():
{imported namespace}[option](sequence, value)
but it seems simpler and cleaner.
John
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Re: problem with strptime and time zone
On Aug 25, 8:48 am, Lawrence D'Oliveiro wrote: > In message > <45faa241-620e-42c7-b524-949936f63...@f6g2000yqa.googlegroups.com>, Alex > > Willmer wrote: > > Dateutil has it's own timezone database ... > > I hate code which doesn’t just use /usr/share/zoneinfo. How many places do > you need to patch every time somebody changes their daylight-saving rules? >From reading http://labix.org/python-dateutil can read timezone information from several platforms, including /usr/share/zoneinfo. I don't know whether one chooses the source explicitly, or if it is detected with fall back to the internal database. -- http://mail.python.org/mailman/listinfo/python-list
Re: Using String Methods In Jump Tables
Tim Daneliuk a écrit :
On 8/19/2010 7:23 PM, Steven D'Aprano wrote:
On Thu, 19 Aug 2010 18:27:11 -0500, Tim Daneliuk wrote:
Problem:
Given tuples in the form (key, string), use 'key' to determine what
string method to apply to the string:
table = {'l': str.lower, 'u': str.upper}
table['u']('hello world')
'HELLO WORLD'
(snip)
>
Yeah ... those old assembler memories never quite fade do they.
I dunno what you might call this. A Function Dispatch Table
perhaps?
I usually refers to this idiom as "dict-based dispatch". And FWIW, it's
in fact (part of...) polymorphic dispatch implemention in Python's
object model:
>>> str.__dict__['lower']
>>> d = dict(l="lower", u="upper")
>>> s = "aHa"
>>> for k, v in d.items():
... print "%s : %s" % (k, s.__class__.__dict__[v](s))
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Re: How far can stack [LIFO] solve do automatic garbage collection and prevent memory leak ?
Hugh Aguilar writes: > On Aug 24, 5:16 pm, Paul Rubin wrote: >> Anyway, as someone else once said, studying a subject like CS isn't done >> by reading. It's done by writing out answers to problem after problem. >> Unless you've been doing that, you haven't been studying. > > What about using what I learned to write programs that work? Does that > count for anything? No. Having put together a cupboard that holds some books without falling apart does not make you a carpenter, much less an architect. -- David Kastrup -- http://mail.python.org/mailman/listinfo/python-list
Re: pypy
> Just curious if anyone had the chance to build pypy on a 64bit > environment and to see if it really makes a huge difference in > performance. Would like to hear some thoughts (or alternatives). I'd recommend asking about this on the pypy mailing list or looking at their documentation first; see http://codespeak.net/pypy/dist/pypy/doc/ HTH, Daniel -- Psss, psss, put it down! - http://www.cafepress.com/putitdown -- http://mail.python.org/mailman/listinfo/python-list
Re: ftplib limitations?
Hi durumdara,
On 2010-08-25 09:43, durumdara wrote:
>> I can imagine the error message (a full traceback if
>> possible) would help to say a bit more about the cause of
>> the problem and maybe what to do about it.
>
> This was:
>
> Filename: "Repositories 20100824_101805 (Teljes).zip" Size: 1530296127
> ..download: 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
> Traceback (most recent call last):
> File "C:\D\LocalBackup\ftpdown.py", line 31, in
> ftp.retrbinary("retr " + s, CallBack)
> File "C:\Python26\lib\ftplib.py", line 401, in retrbinary
> return self.voidresp()
> File "C:\Python26\lib\ftplib.py", line 223, in voidresp
> resp = self.getresp()
> File "C:\Python26\lib\ftplib.py", line 209, in getresp
> resp = self.getmultiline()
> File "C:\Python26\lib\ftplib.py", line 195, in getmultiline
> line = self.getline()
> File "C:\Python26\lib\ftplib.py", line 182, in getline
> line = self.file.readline()
> File "C:\Python26\lib\socket.py", line 406, in readline
> data = self._sock.recv(self._rbufsize)
> socket.error: [Errno 10054] A lÚtez§ kapcsolatot a tßvoli ßllomßs
> kÚnyszerÝtette
> n bezßrta
>
> So this message is meaning that the remote station forced close the
> existing connection.
The file transfer protocol uses two connections for data
transfers, a control connection to send commands and
responses, and a data connection for the data payload
itself.
Now it may be that the data connection, after having started
the transfer, works as it should, but the control connection
times out because the duration of the transfer is too long.
A hint at this is that the traceback above contains
`getline` and `readline` calls which strongly suggest that
this socket was involved in some text transfer (presumably
for a status message).
Most FTP servers are configured for a timeout of 5 or 10
minutes. If you find that the file transfers don't fail
reproducably for a certain size limit, it's probably not the
size of the file that causes the problem but some timing
issue (see above).
What to do about it? One approach is to try to get the
timeout value increased. Of course that depends on the
relation between you and the party running the server.
Another approach is to catch the exception and ignore it.
To make sure you only ignore timeout messages, you may want
to check the status code at the start of the error message
and re-raise the exception if it's not the status expected
for a timeout. Something along the lines of:
try:
# transer involving `retrbinary`
except socket.error, exc:
if str(exc).startswith("[Errno 10054] "):
pass
else:
raise
Note, however, that this is a rather brittle way to handle
the problem, as the status code or format of the error
message may depend on the platform your program runs on,
library versions, etc.
In any case you should close and re-open the FTP connection
after you got the error from the server.
> Now I'm trying with saving the file into temporary file, not hold in
> memory.
If my theory holds, that shouldn't make a difference. But
maybe my theory is wrong. :)
Could you do me a favor and try your download with ftputil
[1]? The code should be something like:
import ftputil
host = ftputil.FTPHost(server, userid, passwd)
for name in host.listdir(host.curdir):
host.download(name, name, 'b')
host.close()
There's neither a need nor - at the moment - a possibility
to specify a callback if you just want the download. (I'm
working on the callback support though!)
For finding the error, it's of course better to just use the
download command for the file that troubles you.
I'm the maintainer of ftputil and if you get the same or
similar error here, I may find a workaround for ftputil. As
it happens, someone reported a similar problem (_if_ it's
the same problem in your case) just a few days ago. [2]
[1] http://ftputil.sschwarzer.net
[2] http://www.mail-archive.com/ftpu...@codespeak.net/msg00141.html
Stefan
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Re: ftplib limitations?
Hi! On aug. 25, 08:07, Stefan Schwarzer wrote: > > The file is 2 GB in size and is fully transferred, without > blocking or an error message. The status message from the > server is '226-File successfully transferred\n226 31.760 > seconds (measured here), 64.48 Mbytes per second', so this > looks ok, too. > > I think your problem is related to the FTP server or its > configuration. > > Have you been able to reproduce the problem? Yes. I tried with saving the file, but I also got this error. but: Total COmmander CAN download the file, and ncftpget also can download it without problem... Hm... :-( Thanks: dd -- http://mail.python.org/mailman/listinfo/python-list
Re: Iterative vs. Recursive coding
"Steven D'Aprano" wrote in message news:4c6f8edd$0$28653$c3e8...@news.astraweb.com... On Fri, 20 Aug 2010 17:23:23 +0200, Bruno Desthuilliers wrote: I onced worked in a shop (Win32 desktop / accouting applications mainly) where I was the only guy that could actually understand recursion. FWIW, I also was the only guy around that understood "hairy" (lol) concepts like callback functions, FSM, polymorphism, hashtables, linked lists, ADTs, algorithm complexity etc... Was there anything they *did* understand, or did they just bang on the keyboard at random until the code compiled? *wink* You underestimate how much programming (of applications) can be done without needing any of this stuff. Needless to say, I didn't last long !-) And rightly so :) I guess they wanted code that could be maintained by anybody. -- Bartc --- news://freenews.netfront.net/ - complaints: n...@netfront.net --- -- http://mail.python.org/mailman/listinfo/python-list
Re: Proper set-up for a co-existant python 2.6 & 3.1 installation
"vsoler" wrote in message news:3d85d8f5-8ce0-470f-b6ec-c86c452a3...@a36g2000yqc.googlegroups.com... On Aug 24, 1:33 am, "Martin v. Loewis" wrote: > > When I am logged-in in a session as an administrator, the BAT file on > > the Desktop, and I double-click on it, it does not work. > > This is not what I meant. Instead, right-click on the BAT file, > and select "run as administrator". > > > When you say to double-escape the percent signs, do you mean that in > > my BAT file I should write... > > > FTYPE python.file="C:\Python26\python.exe" "%%1" %%* > > > and the inverted commas around %%*, are they not necessary? > > No, I don't think so. > > Regards, > Martin Martin (or anybody else), The problem with FTYPE is solved. However, after having switched to py 3.1 with the help of the BAT script (which only changes FTYPE) I have another problem. (Just for reference, here is my batch file) @ECHO OFF ECHO ECHO Cambia a Python 3.1 ECHO ECHO * ECHO FTYPES: ECHO * ECHO .py=Python.File ECHO .pyc=Python.CompiledFile ECHO .pyo=Python.CompiledFile ECHO .pys=pysFile ECHO .pyw=Python.NoConFile ECHO * ECHO ECHO * FTYPE python.file="C:\Python31\python.exe" "%%1" %%* FTYPE python.compiledfile="C:\Python31\python.exe" "%%1" %%* FTYPE python.NoConFile="C:\Python31\pythonw.exe" "%%1" %%* ECHO * Pause @ECHO ON The problem is that, if I am on top of a .py file, and, with the mouse, I click on the right button, then I click on "Edit with IDLE", I get the 2.6 system, not the 3.1 one (which was supposed to be the correct one after the change). My question is: are there any other changes that I should do in order to fully switch from one version to another? Yes, and they are relatively easy to edit with a .reg file instead of a batch file. Below is just an example for type "Python.File" that adds "Open with Python3", "Edit with IDLE3", and "Open with Pythonwin3" commands to the right-click context menu of a .py file. The first 3 entries are the original Python26 entries. The last three were copied from them and modified to create the alternative context menus. You could also create two .reg files that toggle the original three entries between Python 2.6 and Python 3.1 if you want. ---START Windows Registry Editor Version 5.00 [HKEY_CLASSES_ROOT\Python.File\shell\Edit with IDLE\command] @="\"C:\\Python26\\pythonw.exe\" \"C:\\Python26\\Lib\\idlelib\\idle.pyw\" -n -e \"%1\"" [HKEY_CLASSES_ROOT\Python.File\shell\Edit with Pythonwin\command] @="C:\\Python26\\Lib\\site-packages\\Pythonwin\\Pythonwin.exe /edit \"%1\"" [HKEY_CLASSES_ROOT\Python.File\shell\open\command] @="\"C:\\Python26\\python.exe\" \"%1\" %*" [HKEY_CLASSES_ROOT\Python.File\shell\Edit with IDLE3\command] @="\"C:\\Python31\\pythonw.exe\" \"C:\\Python31\\Lib\\idlelib\\idle.pyw\" -n -e \"%1\"" [HKEY_CLASSES_ROOT\Python.File\shell\Edit with Pythonwin3\command] @="C:\\Python31\\Lib\\site-packages\\Pythonwin\\Pythonwin.exe /edit \"%1\"" [HKEY_CLASSES_ROOT\Python.File\shell\Open with Python3\command] @="\"C:\\Python31\\python.exe\" \"%1\" %*" ---END--- -Mark -- http://mail.python.org/mailman/listinfo/python-list
Re: problem with strptime and time zone
In message <45faa241-620e-42c7-b524-949936f63...@f6g2000yqa.googlegroups.com>, Alex Willmer wrote: > Dateutil has it's own timezone database ... I hate code which doesn’t just use /usr/share/zoneinfo. How many places do you need to patch every time somebody changes their daylight-saving rules? -- http://mail.python.org/mailman/listinfo/python-list
Re: ftplib limitations?
Hi!
>
> So if I understand correctly, the script works well on
> smaller files but not on the large one?
Yes. 500-800 MB is ok. > 1 GB is not ok.
>
> > It down all of the file (100%) but the next line never reached.
>
> _Which_ line is never reached? The `print` statement after
> the `retrbinary` call?
Yes, the print.
>
> > Some error I got, but this was in yesterday, I don't remember the text
> > of the error.
>
> Can't you reproduce the error by executing the script once
> more? Can you copy the file to another server and see if the
> problem shows up there, too?
I got everytime, but I don't have another server to test it.
>
> I can imagine the error message (a full traceback if
> possible) would help to say a bit more about the cause of
> the problem and maybe what to do about it.
This was:
Filename: "Repositories 20100824_101805 (Teljes).zip" Size: 1530296127
..download: 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%
Traceback (most recent call last):
File "C:\D\LocalBackup\ftpdown.py", line 31, in
ftp.retrbinary("retr " + s, CallBack)
File "C:\Python26\lib\ftplib.py", line 401, in retrbinary
return self.voidresp()
File "C:\Python26\lib\ftplib.py", line 223, in voidresp
resp = self.getresp()
File "C:\Python26\lib\ftplib.py", line 209, in getresp
resp = self.getmultiline()
File "C:\Python26\lib\ftplib.py", line 195, in getmultiline
line = self.getline()
File "C:\Python26\lib\ftplib.py", line 182, in getline
line = self.file.readline()
File "C:\Python26\lib\socket.py", line 406, in readline
data = self._sock.recv(self._rbufsize)
socket.error: [Errno 10054] A lÚtez§ kapcsolatot a tßvoli ßllomßs
kÚnyszerÝtette
n bezßrta
So this message is meaning that the remote station forced close the
existing connection.
Now I'm trying with saving the file into temporary file, not hold in
memory.
Thanks:
dd
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