> I know, I just wondered if there is a *standard* solution.
Yeah, you have to reset your brain and switch to Python mode. *scnr*
Seriously, your inquiry sounds like you are trying to code C in Python.
I'm using Python for more than seven years and I've never felt the need
for a mutable float ref
> Is Python portable?
>
> Can I install it on an USB Stick?
>
> Or is Python installing (at least on WinXP) services or register some DLLs or
> write something into Registry?
Yes, a single user installation of Python is portable. An installation
for every user is not portable since it installs
> Since Python isn't stringly typed, single-dispatch isn't available per
> se. So is the "double-dispatch" Visitor pattern, which is usually used
> in OO systems to implement code generators. So, what is the de facto
> method in Python to handle source code generation?
Do you mean strongly typed l
> And yet, p.__len__() returns 3. I though len(object) simply
> called object.__len__.
Not exactly, all __magic__ methods of new style classes are called like
getattr(type(obj), "__len__")(obj). As a result magic methods are never
looked up on the object, including hooks like __getattr_() and
__ge
> def to_JSON(self):
> returnDict = {}
> for member in filter(someMethod, inspect.getmembers(self)):
> returnDict[member[0]] = member[1]
> return json.dumps(returnDict)
By the way you don't need filter here. The getmembers() function has a
filter functions. It's cal
> In my web application (Django) I call a function for some request which
> loads like 500 MB data from the database uses it to do some calculation and
> stores the output in disk. I just wonder even after this request is served
> the apache / python process is still shows using that 500 MB, why is
Am 20.07.2010 12:10, schrieb dmitrey:
> hi all,
> I have a class (FuncDesigner oofun) that has no attribute "size", but
> it is overloaded in __getattr__, so if someone invokes
> "myObject.size", it is generated (as another oofun) and connected to
> myObject as attribute.
How about using a propert
Am 20.07.2010 17:50, schrieb Vishal Rana:
> Hi Christian,
>
> I am not sure which one is used in this case, I use htop to see the memory
> used by apache / python.
In its default configuration htop reports three different types of
memory usage: virt, res and shr (virtual, resident and shared memo
> I think it is discouraged because it *will* break things in the standard
> library and builtins. It's discouraged in the same way that pouring sugar
> into the petrol tank of your car is discouraged.
Mythbusters have tested this urban legend. In their test the engine run
better with sugar. [1]
> Your case could be handled by something like:
>
> from datetime import datetime
> from dateutil.relativedelta import relativedelta
>
> target = datetime.now() + relativedelta(days=+1, hour=2, minute=30,
> second=0, microsecond=0)
> rem
Am 25.07.2010 21:32, schrieb Thomas Jollans:
> If a script uses sys.executable instead of "python", there is no
> problem, at all.
It's true that sys.executable is the best way if you have to start a new
Python interpreter. However sys.executable may not be set for NT
services. So there may be a p
> Specifically, I'm concerned with binaries created by SWIG for a C++
> library that our project uses. We'd like to ship precompiled binaries
> for Linux, OS X and Windows for Python 2.5 and 2.6. I'm hoping that it
> is sufficient to create binaries for each Python for each platform (3
> *
> Can I check in the interpreter if I am running a debug version of
> python? I don't mean if __debug__ is set, I want to know if python was
> compiled in debug mode.
Python has multiple flavors of debug builds. hasattr(sys,
"gettotalrefcount") is only available if Py_REF_DEBUG is enabled. This
> Starting with Python 2.7 and 3.2 you can do this:
>
sysconfig.get_config_var("Py_DEBUG")
> 1
>
> (returns None if the var doesn't exist)
IIRC sysconfig.get_config_var() still depends on parsing the pyconfig.h
file. This won't work on Windows because we are using project and config
setting
> I know very little about security, but one thing I think I know. Never
> use security software version 1.0 or greater. It was written by an
> author insufficiently paranoid.
OpenSSL 1.0.0a was released about a month ago. ;)
--
http://mail.python.org/mailman/listinfo/python-list
> Inheriting from "int" is not too helpful, because you can't assign
> to the value of the base class. "self=1" won't do what you want.
It's useful if you remember that you can set the default value by
overwriting __new__.
>>> class int1(int):
... def __new__(cls, value=1):
... retur
Am 30.07.2010 16:06, schrieb Vincent van Beveren:
> I did not know the object did not keep track of its bound methods. What
> advantage is there in creating a new bound method object each time its
> referenced? It seems kind of expensive.
Instances of a class have no means of storing the bound m
Am 30.07.2010 14:34, schrieb wheres pythonmonks:
> I was hoping not to do that -- e.g., actually reuse the same
> underlying data. Maybe dict(x), where x is a defaultdict is smart? I
> agree that a defaultdict is safe to pass to most routines, but I guess
> I could imagine that a try/except block
> The truth, as Christian says above and as Raymond Hettinger recently
> pointed out [1], is that __missing__ is used to *define* defaultdict as
> a subclass of dict -- it's not used *by* defaultdict.
Your answer is confusing even me. ;)
Let me try an easier to understand explanation. defaultdi
Am 02.08.2010 01:08, schrieb candide:
> Python is an object oriented langage (OOL). The Python main
> implementation is written in pure and "old" C90. Is it for historical
> reasons?
Python is written in C89 to support as many platforms as possible. We
deliberately don't use any new features and
> I want to run several subprocesses. Like so:
>
> p1 = Popen("mycmd1" + " myarg", shell=True)
> p2 = Popen("mycmd2" + " myarg", shell=True)
>
> pn = Popen("mycmdn" + " myarg", shell=True)
>
> What would be the most elegant and secure way to run all n
> subprocesses in parallel?
They alread
Am 03.08.2010 01:03, schrieb Aahz:
> http://www.netfunny.com/rhf/jokes/98/May/stroustrup.html
I don't understand why the URL contains the word "joke". Every word is
true. Hell yeah! :)
Christian
--
http://mail.python.org/mailman/listinfo/python-list
> So I'd rather not mention __missing__ in the first paragraph, which
> describes the functionality provided *by* the defaultdict class. How
> about adding this para at the end:
>
> defaultdict is defined using functionality that is available to *any*
> subclass of dict: a missing-key lookup
> I just went and read the entry that had the bogus claim -- personally, I
> didn't see any confusion. I would like to point out the __missing__ is
> *not* part of dicts (tested on 2.5 and 2.6 -- don't have 2.7 installed yet).
I beg your pardon but you are wrong. __missing__ is available for al
> Perhaps punctuation will help clarify my intent:
>
> __missing__ is *not* part of (dict)s, as shown by dir(dict()):
Indeed, that's correct. Can we agree, that __missing__ is an optional
feature of the dict interface, that can be implemented in subclasses of
dict?
Christian
--
http://mail.pyt
> I'm running into some performance / memory bottlenecks on large lists.
> Is there any easy way to minimize/optimize memory usage?
>
> Simple str() and unicode objects() [Python 2.6.4/Linux/x86]:
sys.getsizeof('') 24 bytes
sys.getsizeof('0')25 bytes
sys.getsizeof(u'')2
> I highly doubt the Python source would build with a C++ compiler.
>
> C++ is "'mostly' 'backwards' compatible" with C insofar as you can
> pretty easily write C code that is also legal (and semantically
> equivalent) C++. But if you don't actively try to write code that is
> compatible with bot
Am 10.08.2010 01:20, schrieb Aahz:
> The docs say, "Parses an XML section into an element tree incrementally".
> Sure sounds like it retains the entire parsed tree in RAM. Not good.
> Again, how do you parse an XML file larger than your available memory
> using something other than SAX?
The docum
> Is there a way I can keep my floating point number as I typed it? For
> example, I want 34.52 to be 34.52 and NOT 34.520002.
This isn't a Python issue. Python uses IEEE 754 [1] double precision
floats like most other languages. 34.52 can't be stored in a float. The
next valid float is 34.520
> For example, when you go to save your bit of code, it will go in and if
> it finds __ anywhere in the text it just replaces it with xx. And, since
> getattr is not available, '_' + '_' won't get you anywhere.
That's not as secure as you might think. First of all you can write "_"
in more way tha
Am 19.08.2010 17:00, schrieb Alex Hall:
> In Python, as I understand it, you can define this behavior.
>
> class c(object):
> def __init__(self, a=1, b=2):
> self.a=a; self.b=b
>
> def __eq__(self, obj):
> if self.a==obj.a and self.b==obj.b: return True
> return False
Yes, but you have t
Am 19.08.2010 20:53, schrieb Tim Chase:
> On 08/19/10 12:42, Steven D'Aprano wrote:
>> On Thu, 19 Aug 2010 11:00:03 -0400, Alex Hall wrote:
>>
>>> def __eq__(self, obj):
>>>if self.a==obj.a and self.b==obj.b: return True
>>>return False
>>
>> That would be the same as:
>>
>> def __eq_
> Why is 'e' ending up as a string rather than the ImportError object?
>
> This is with Python 2.6.5 if that makes a difference...
It's a known bug in Python 2.6 and earlier. See
http://docs.python.org/whatsnew/2.7.html#porting-to-python-2-7
Due to a bug in Python 2.6, the exc_value parameter to
mik...@gmail.com schrieb:
> As every one related to security probably knows, Rivest (and his
> friends) have a new hashing algorithm which is supposed to have none
> of the weaknesses of MD5 (and as a side benefit - not too many rainbow
> tables yet). His code if publicly available under the MIT li
Terry Reedy schrieb:
> Christian Heimes wrote:
>> mik...@gmail.com schrieb:
>>> As every one related to security probably knows, Rivest (and his
>>> friends) have a new hashing algorithm which is supposed to have none
>>> of the weaknesses of MD5 (and as a
Terry Reedy wrote:
> A wrapper could go on PyPI now so it can be tested in use *before* going
> in the stdlib. No commit or pre-review needed either.
Here you go http://pypi.python.org/pypi/md6
It's still a bit rough, totally untested but it should work.
Christian
--
http://mail.python.org/ma
Aahz wrote:
> Um, what? You mean 3.1rc1, right? Nevertheless, my understanding is
> that 2.7 is mostly restricted to code landed in 3.1, so your second
> statement is roughly correct.
Oh, d...! Of course you are right, Aahz. As far as I can remember 2.7
will only contain backports of 3.1 feature
Phil Thompson schrieb:
> How stable should the implementation of, for example, a string's hash
> across different Python versions?
>
> Is it defined that hash("foo") will return the same value for Python 2.5.1,
> 2.6.1 and 2.6.2?
The hash of an object is an internal implementation detail. The has
Paul LaFollette schrieb:
> Kind people,
>
> Using Python 3.0 on a Gatesware machine (XP).
> I am building a class in which I want to constrain the types that can
> be stored in various instance variables. For instance, I want to be
> certain that self.loc contains an int. This is straightforward
Simon wrote:
> I installed Python-2.4.4.tar.bz2 from python.org, using gcc-4.3 (within
> openSUSE 11.1 x86_64) via 'make altinstall'.
>
> First, I tried to configure with the following flags:
> --prefix=/opt/python-24 --enable-framework --with-pydebug
> This provoked an error during compilation vi
Simon schrieb:
> Christian Heimes wrote:
>> Simon wrote:
>>> I installed Python-2.4.4.tar.bz2 from python.org, using gcc-4.3 (within
>>> openSUSE 11.1 x86_64) via 'make altinstall'.
>>>
>>> First, I tried to configure with the following flags
tom schrieb:
> i can traverse a directory using os.listdir() or os.walk(). but if a
> directory has a very large number of files, these methods produce very
> large objects talking a lot of memory.
>
> in other languages one can avoid generating such an object by walking
> a directory as a liked l
Andre Engels wrote:
> What kind of directories are those that just a list of files would
> result in a "very large" object? I don't think I have ever seen
> directories with more than a few thousand files...
I've seen directories with several hundreds of thousand files. Depending
on the file syste
Terry Reedy wrote:
> You did not specify version. In Python3, os.walk has become a generater
> function. So, to answer your question, use 3.1.
I'm sorry to inform you that Python 3.x still returns a list, not a
generator.
ython 3.1rc1+ (py3k:73396, Jun 12 2009, 22:45:18)
[GCC 4.3.3] on linux2
Eric Snow schrieb:
> Apparently there is a known issue with doctests, in which tests in
> functions using externally defined decorators are ignored. The
> recommended fix is to update the order of checks in the _from_module
> method of DocTestFinder in the doctest module. The bug and fix are
> di
Joe Holloway schrieb:
> We recently uplifted our web application to run on Python 2.6.2.
> We've noticed on a couple occasions that calls into time.strptime have
> failed with this exception:
>
> ImportError: Failed to import _strptime because the import lockis
> [sic] held by another thread.
The
Terry Reedy wrote:
> If you mean 'be an instance of a class', which I think is the most
> natural reading, then Python *is* object-oriented and, if I understand
> what I have read correctly (so that ints are just (unboxed) ints and not
> members of an int class), Java *is not*!
A friend of mine ca
OdarR wrote:
> I don't see such improvement in the Python library, or maybe you can
> indicate us some meaningfull example...?
>
> I currently only use CPython, with PIL, Reportlab...etc.
> I don't see improvement on a Core2duo CPU and Python. How to proceed
> (following what you wrote) ?
I've se
OdarR schrieb:
> On 19 juin, 21:41, Carl Banks wrote:
>> He's saying that if your code involves extensions written in C that
>> release the GIL, the C thread can run on a different core than the
>> Python-thread at the same time. The GIL is only required for Python
>> code, and C code that uses t
Aahz wrote:
> In article <157e0345-74e0-4144-a2e6-2b4cc854c...@z7g2000vbh.googlegroups.com>,
> Carl Banks wrote:
>> I wish Pythonistas would be more willing to acknowledge the (few)
>> drawbacks of the language (or implementation, in this case) instead of
>> all this rationalization.
>
> Pleas
Diez B. Roggisch wrote:
>
> And obviously enough, compiling my wrapper fails because there is an
> argument missing.
>
> So, I'm in need for a guide on how to use PyBuffer_FillInfo properly -
> all I've got is a void* and a total size of the buffer.
The second argument points to the (optional) o
Nate wrote:
> gmapcreator = subprocess.Popen("java -Xms128M -Xmx512M -jar
> gmapcreator.jar -dfile=censettings.xml", stdin=subprocess.PIPE,
> stdout=subprocess.PIPE, stderr=subprocess.PIPE)
Try this:
gmapcreator = subprocess.Popen(
["java", "-Xms128M", "-Xmx512M", "-jar", "gmapcreator.jar",
Nate wrote:
> Thanks for your response. Related to this talk about shells, maybe you
> could point me towards a resource where I could read about how windows
> commands are processed w/w/o shells? I guess I assumed all subprocess
> commands were intepreted by the same thing, cmd.exe., or perhaps t
Terry Reedy wrote:
> Bryan wrote:
>
>> How come dir(Foo) does not show __name__? That is how I was
>> investigating the possibilities.
>
> Interesting question. Seems like an oversight. dir(some_module) and
> dir(some_function) include '__name__'. I suggest you search the tracker
> for existing
Paul Moore schrieb:
> 2009/6/28 "Martin v. Löwis" :
>>> However, sys.std{in,out,err} are still created as text streams, and AFAICT
>>> there's nothing you can do about this from within your code.
>> That's intentional, and not going to change. You can access the
>> underlying byte streams if you wa
æ¾å°èªå·±çä¸ç天 schrieb:
> I found it's quite strange when compiling. I didn't use extern "C" at all
> , how can python get the right c++ funciton name without any compile error??
>
> I found that it first use gcc to compile noddy3.cpp and then link by g++.
>
> Could anyone explain what
Tim Pinkawa wrote:
> def which(file):
> for path in os.environ["PATH"].split(":"):
> if file in os.listdir(path):
> print "%s/%s" % (path, file)
"if file in os.list()" is slow and not correct. You have to check if the
file is either a real file or a symlink to a
Tim Pinkawa wrote:
> I realize four lines of Python does not replicate the functionality of
> which exactly. It was intended to give the original poster something
> to start with.
Agreed!
> I am curious about it being slow, though. Is there a faster way to get
> the contents of a directory than o
PK schrieb:
> Given a checksum value, whats the best way to find out what type it is?
>
> meaning. I can use hashlib module and compute a md5 or sha1 for a given data
> etc..but given a checksum value say "d2bda52ee39249acc55a75a0f3566105" whats
> the best way for me to identify if its a sha1 or m
Scott David Daniels wrote:
> fortunately, the hashlib checksums can be distinguished by their length
Unfortunately the world knows more hash algorithms than the Python
standard library. :)
Christian
--
http://mail.python.org/mailman/listinfo/python-list
Pedram schrieb:
> Hello community,
> I'm reading the CPython interpreter source code,
> first, if you have something that I should know for better reading
> this source code, I would much appreciate that :)
> second, in intobject.c file, I read the following code in
> fill_free_list function that I
Dave Angel wrote:
> Look also at 'del' a command in the language which explicitly deletes an
> object.
No, you are either explaining it the wrong way or you have been fallen
for a common misinterpretation of the del statement. The del statement
only removes the object from the current scope. This
kk wrote:
> I will be querying some data and create class instances based on the
> data I gather. But the problem as I mentioned is that I do not know
> the names and the number of the end class instances. They will be
> based on the content of the data. So how can I create class instances
> within
nn wrote:
> I am trying to compile python with ssl support but the libraries are
> not in /usr/lib but in /opt/freeware/lib. How do I add that folder to
> the default library search path?
>
> It looks like configure --libdir=DIR might do the job but I don't want
> to replace the default lib search
dudeja.ra...@gmail.com wrote:
> How to check if a particular file is locked by some application? (i.e. the
> file is opened by some application)?
It depends on your operating system. By the way most operating systems
don't lock a file when it's opened for reading or writing or even executed.
Chri
gabrielmonnerat wrote:
>> I am using subprocess because I need store the pid. Any suggestions?
> Sorry, I was forgot the parameter shell=True.
> i.e
> In [20]: subprocess.call('DISPLAY=:99
> /opt/ooo-dev3/program/soffice.bin',shell=True)
You should avoid using the shell=True parameter. It may resu
Tony Lay wrote:
> # cd /usr/local/lib
>
> # ls -la | grep libtk8.5.so
>
> -r-xr-xr-x 1 root root 1112606 Jul 10 13:28 libtk8.5.so
>
> Am I missing something, it’s there?
Is /usr/local/lib in your library search path? It looks like it isn't.
Check /etc/ld.so.conf and /etc/ld.so.conf.d/.
Chri
sanju ps schrieb:
> Hi
>
> Can anyone give me solution to create a python binary file (bytecode) other
> than pyc file .So my source code be secure.. I am working on ubuntu 9.04
> with python2.6.. I
It's impossible to secure your code if it runs on an untrusted computer.
This is true for all pro
Chris Rebert wrote:
> Using the xor bitwise operator is also an option:
> bool(x) ^ bool(y)
I prefer something like:
bool(a) + bool(b) == 1
It works even for multiple tests (super xor):
if bool(a) + bool(b) + bool(c) + bool(d) != 1:
raise ValueError("Exactly one of a, b, c and d mus
fdb wrote:
> Hi all,
>
> I need to extend and not replace the __getitem__ method of a dict class.
>
> Here is sample the code:
>
class myDict(dict):
> def __getitem__(self, y):
> print("Doing something")
> dict.__getitem__(self, y)
>
a=myDict()
>
pdpi wrote:
> On Jul 15, 12:08 am, Christian Heimes wrote:
>> Chris Rebert wrote:
>>> Using the xor bitwise operator is also an option:
>>> bool(x) ^ bool(y)
>> I prefer something like:
>>
>> bool(a) + bool(b) == 1
>>
>> It works even
Tim Edwards wrote:
> Besides changing the path order, how do I ensure it runs the new
> version? I'm sure I'll bang my head on the desk in shame as soon as
> I'm reminded.
hash -r
Christian
--
http://mail.python.org/mailman/listinfo/python-list
resurtm wrote:
> Can anybody explain my errors when trying to pass callback to DLL
> function?
>
> Thanks for advices and solutions!
You have to keep a reference to the callback alive yourself. ctypes
doesn't increase the refernece counter of the function when you define a
callback. As soon as th
Niels L. Ellegaard wrote:
> Phillip B Oldham writes:
>
>> We often find we need to do manipulations like the above without
>> changing the order of the original list, and languages like JS allow
>> this. We can't work out how to do this in python though, other than
>> duplicating the list, sortin
Chris Rebert wrote:
> You want the imp.load_module() function:
> http://docs.python.org/library/imp.html#imp.load_module
>
> __import__() only operates on module/package names. I'm not sure how
> you even got it to work with a filename...
It used to work with filenames but it was a bug. I guess s
Hello,
I'm looking for a generator version of os.listdir() for Python 2.5 and
newer. I know somebody has worked on it because I've seen a generator
version in a posting on some list or blog a while ago. I can't find it
anymore. It seems my Google fu is lacking today. All I can find is a
very old v
Emanuele D'Arrigo wrote:
> Now the question. Apart from checking sys.module first and eventually
> adding the new module to it if it isn't there already, and apart from
> setting __file__, is there anything else that import does and this
> snippet doesn't?
The import statement does several things.
Neuruss wrote:
> It seems psyco.org is still in the transfer process...
> Is there any charitable soul with a link to a Windows binary? :-)
It seems like Christian is already working on Windows binaries. We are
having a discussing about an obscure MinGW bug on the Python developer
list. It looks l
Christian Tismer wrote:
> Psyco V2 will run on X86 based 32 bit Linux, 32 bit Windows,
> and Mac OS X. Psyco is not supporting 64 bit, yet. But it
> is well being considered.
Can you estimate how much work needs to be done in order to get Psyco
working on 64bit POSIX (Linux) systems?
Christian
-
Mohan Parthasarathy wrote:
> Hi,
> I am a newbie. It looks like there are quite a few ways to bridge Python and
> C. I have a bunch of C code and I just need Python wrappers for it. If i
> google for this I get SWIG, Boost etc. And I also see
>
> http://www.python.org/doc/2.5.2/ext/intro.html
>
>
Nick Craig-Wood wrote:
> Christian Heimes wrote:
>> I'm looking for a generator version of os.listdir() for Python 2.5 and
>> newer. I know somebody has worked on it because I've seen a generator
>> version in a posting on some list or blog a while ago. I can
Stef Mientki schrieb:
> hello,
>
> until now I used only small / simple databases in Python with sqlite3.
> Now I've a large and rather complex database.
>
> The most simple query (with just a result of 100 rows),
> takes about 70 seconds.
> And all that time is consumed in "cursor.fetchall"
>
>
scriptlear...@gmail.com wrote:
> My parent thread keeps a counter for the number of free child workers
> (say 100) and initializes some child threads and call child.start().
> Once the number of free child workers reach 0, the parent thread will
> wait until some at least one child thread finishes
Weidong schrieb:
> I am trying to build python 2.6.2 from the source by following the
> instructions in README that comes with the source. The configure and
> make steps are fine, but there is an error in "make install" step.
> This "make install" attempts to build a lot of lib, and it complains
>
Weidong wrote:
> Thanks for your response! I configured it in the same way as you
> said, but without "--enable-unicode=ucs4". The ocnfig.log shows that
> checking for UCS-4 was failed. So I assume that by default UCS-2 was
> used. There was no other problme in the "make" step.
Correct
> The
John D Giotta schrieb:
> I'm looking to run a process with a limit of 3 instances, but each
> execution is over a crontab interval. I've been investigating the
> threading module and using daemons to limit active thread objects, but
> I'm not very successful at grasping the documentation.
>
> Is i
John D Giotta schrieb:
> I'm working with up to 3 process "session" per server, each process
> running three threads.
> I was wishing to tie back the 3 "session"/server to a semaphore, but
> everything (and everyone) say semaphores are only good per process.
That's not true. Named semaphores are t
Martin P. Hellwig wrote:
> Well the pyc, which I thought was the Python bytecode, is then
> interpreted by the VM.
Python is often referred as byte-code interpreted language. Most modern
languages are interpreted languages. The list [1] is rather long.
Technically speaking even native code is inte
Barak, Ron wrote:
> Your solution sort of defeats my intended purpose (sorry for not divulging my
> 'hidden agenda').
> I wanted my application to "hide" the fact that it's a python script, and
> look as much as possible like it's a compiled program.
> The reason I don't just give my user a py fi
Ronn Ross schrieb:
> I have a package i would like to store locally. If it is stored locally can
> I do something like ' easy_install http://localhost/package ' ? Thanks
You can do:
easy_install /path/to/package-0.1.tar.gz
or you can put your packages into
/some/directory/simple/packagename/pa
Michael M Mason wrote:
I'm running Python 3.1 on Vista and I can't figure out how to add my own
directory to sys.path.
The docs suggest that I can either add it to the PYTHONPATH environment
variable or to the PythonPath key in the registry. However, PYTHONPATH
doesn't exist, and updating t
Marcus Wanner wrote:
I believe that python is buffer overflow proof. In fact, I think that
even ctypes is overflow proof...
No, ctypes isn't buffer overflow proof. ctypes can break and crash a
Python interpreter easily.
Christian
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Mohan Parthasarathy schrieb:
I am a newbie and about a month old with Python. There is a wealth of
material about Python and I am really enjoying learning Python.
One thing that could have helped Python documentation is that instead of the
very "raw" doc string, it could have used something like
John Nagle wrote:
A more useful question is whether the standard libraries are being
run through any of the commercial static checkers for possible buffer
overflows.
The CPython interpreter is constantly checked with
http://www.coverity.com/. Although Python is used for critical stuff at
Dr. Phillip M. Feldman wrote:
When I try to compute the phase of a complex number, I get an error message:
In [3]: from cmath import *
In [4]: x=1+1J
In [5]: phase(x)
NameError: name 'phase' is not defined
AttributeError: 'complex' object has no attribute 'phase'
Any advice will be appreciate
kj wrote:
I seek the wisdom of the elders. Is there a consensus on the matter
of conditional imports? Are they righteous? Or are they the way
of the wicked?
imports in functions are dangerous and may lead to dead locks if they
are mixed with threads. An import should never start a thread an
Emanuele D'Arrigo schrieb:
Greetings everybody,
I don't quite understand why if I do this:
d = {}
exec("dir()", d)
1) d is no longer empty
2) the content of d now looks like __builtins__.__dict__ but isn't
quite it d == __builtins__.__dict__ returns false.
Can anybody shed some light?
RTF
Johannes Janssen wrote:
> class A(object):
> def __init__(self, mod=__name__):
> self.mod = mod
won't work. In this case mod would always be "foo".
You have to inspect the stack in order to get the module of the caller.
The implementation of warnings.warn() gives you some
David wrote:
Has anyone run into a similar problem (and solved it) ?
Yeah, here is my implementation as a perpetual timer based some cherrypy
code and threading timer.
import threading
class PerpetualTimer(threading._Timer):
"""A subclass of threading._Timer whose run() method repeats.
guthrie schrieb:
I want to do some rrd in a python cgi script, but am having trouble
getting an easy install module.
py-rrdTool looks good, but is distributed in c source, and is missing
a header file in the distribution. Thus the install fails when it
tries to reference rrd.h which is not there
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