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I know standard CPython has a limit on recursion depth, less than 1000 I think, so the below example code will fail with a "maximum recursion depth exceeded" error. def rec_add(x): if x == 0: ...
hellopeach's user avatar
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1 vote
2 answers
3k views

I have a really weird problem with embedding python. If I don't specify PYTHONPATH, Py_Initialize fails with ImportError: No module named site. If I set PYTHONPATH in cmd and then run my program, it ...
toster-cx's user avatar
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3 votes
1 answer
483 views

I need to run some parallel computations in python. The only compatible approach I can think of is the multiprocess/fork model, which is less than ideal for several reasons: from what I understand, ...
user19087's user avatar
  • 2,131
1 vote
1 answer
1k views

I am trying to install stackless python. I have tried pip install stackless-python easy_install stackless-python python -m pip install stackless-python I have done all these and also the same with an ...
user avatar
1 vote
0 answers
107 views

I am having a wicked problem with exposing a polymorphic class hierarchy via a factory. I have created an example that demonstrates the problem. This is all being hosted in a executable with an ...
Robert Babiak's user avatar
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0 votes
0 answers
235 views

I have a program that runs multiple tasklets using stackless python, and my problem is that though it is fast, I do notice a slowdown if I start one or more processes that run the same code. For ...
Jack's user avatar
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1 vote
1 answer
59 views

How the below program execute my member A.fun without calling stackless.run() in the program? import stackless class A: def __init__(self,name): self.name = name self.ch = ...
Ravi's user avatar
  • 303
3 votes
1 answer
135 views

Working on a git fork of someone's code, I came across the following, there to halt the master thread until such a time as all the sub-threads are done: while(True): if not any([thread.isAlive() ...
Aviator45003's user avatar
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1 vote
0 answers
66 views

In python, you can expand a sequence into discrete function arguments with the star operator: args = [2, 3] print(pow(*args)) # same as `print(pow(2, 3))` There's even a nice idiom for transposing a ...
alexis's user avatar
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1 vote
1 answer
166 views

Just starting with Stackless Python. I'm trying to create some tasklets at run time, that is, after calling stackless.run(). I thought this function wouldn't block the main thread, so I would be able ...
cdonts's user avatar
  • 9,711
2 votes
0 answers
51 views

I'm trying to use stackless python for a heroku app, but they don't support the runtime: ! Requested runtime (stackless-3.3.5) was not found. This is surprising, since stackless-3.3.5 was ...
Enucatl's user avatar
  • 507
3 votes
2 answers
264 views

I've made a huge google research about Stackless Python's tasklets. Every source mentions it as a thread stackless.com : Microthreads: tasklets wrap functions allowing them to be launched as ...
Krzysztof Wende's user avatar
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0 votes
2 answers
129 views

import stackless class MyTasklet(stackless.tasklet): def __init__(self, func, msg): pass def foo(): pass msg = 'hello' MyTasklet(foo, msg)() I am using stackless python, this code ...
user435657's user avatar
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1 vote
0 answers
513 views

I am using PyCharm 3 on OS X. I've configured a Python Stackless binary in virtual env to be used as a project interpreter. It runs okay, and imports stackless module, but in the editor it is showed ...
DataGreed's user avatar
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0 votes
2 answers
754 views

It seems like on Windows I have to uninstall Python before installing stackless (http://stackless.com/wiki/Download). I have Python 2.7 installed, a solution may be installing Stackless Python 3.2, ...
cdonts's user avatar
  • 9,711
1 vote
5 answers
2k views

I'm looking for a way to pass function arguments through another function, in a manner identical to Stackless' tasklet instantiation: stackless.tasklet(function_being_called)(*args) So far the best ...
Humble Penguin's user avatar
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0 votes
1 answer
421 views

I really admire the functionality of Stackless Python, and I've been looking around for a way to emulate its syntax while still using the standard Python 3 interpreter. An article by Alex J. ...
Humble Penguin's user avatar
  • 323
2 votes
2 answers
301 views

Given a large (4.5 GB codebase) python testing framework whose execution involves many tens of files, many of which are not directly pickle-able, is it possible to wrap initial execution of the ...
bsm's user avatar
  • 207
3 votes
3 answers
832 views

I'm interested in experimenting with python. I know I can inspect and inject local and global variables into a frame using frame.f_locals and frame.f_globals, but I am now itching to create a full ...
Fábio Santos's user avatar
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2 votes
2 answers
3k views

# data is a list Threading_list=[] class myfunction(threading.Thread): def __init__(self,val): ....... ....... def run(self): ....... ....... for i in ...
Mok's user avatar
  • 287
1 vote
1 answer
139 views

Consider the following four lines (all identical) which produce the same number of lines from a log file: $ zcat test-catalog.xml.gz | bin/process-catalog.py -b build -T 4 - 2>&1 | wc -l 620 $ ...
chaimp's user avatar
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5 votes
3 answers
602 views

I want to learn python so I downloaded it from the python site and I saw 4 other kinds of pythons appear: Python (normal) IronPython Jython PyPy Stackless Python I can really find what the differents ...
user avatar
3 votes
3 answers
904 views

For some academic research I need to simulate several threads running on a single processor. I want to be able to insert *call_scheduler()* calls inside my code, in which the current "thread" will ...
Oren's user avatar
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1 vote
0 answers
179 views

I have a project using Stackless Python with stacklesssocket.py. I recently decided that I wanted to add Couchbase to my project to server as my database back-end. I did this following the ...
mmopy's user avatar
  • 715
13 votes
1 answer
983 views

Stackless python allows you to serialize a task (pickling) for later execution that need not be on the same machine: http://www.stackless.com/wiki/Pickling My question is does stackless python ...
Ryan R.'s user avatar
  • 2,648
2 votes
3 answers
309 views

Platform: Windows 7 Assume 32bit versions of both. My current understanding is that it is NOT possible since both installation processes involve replacing the python.exe itself. I guess the source ...
Ryan R.'s user avatar
  • 2,648
1 vote
2 answers
1k views

I used pycharm and eclipse+pydev, and I also installed stackless python(2.7.1) for mac os x. when I try to import stackless, there always are tips which is "can't find such package/reference", but ...
Tom Heng's user avatar
  • 35
4 votes
1 answer
736 views

Default build of PyPy 1.7 with stackless included in, does not offer the ability to run with no recursion depth limit (in straight way). Why? Previus builds of PyPy with stackless support ...
Robert Zaremba's user avatar
  • 8,541
16 votes
1 answer
5k views

New version of PyPy ships with integrated Stackless. As far as I know the bundled Stackless is not the same as the origin Stackless from 2001 with continuations. So mainly it is the green threads ...
Robert Zaremba's user avatar
  • 8,541
8 votes
2 answers
4k views

I'm engaged in developing a turn-based casual MMORPG game server. The low level engine(NOT written by us) which handle networking, multi-threading, timer, inter-server communication, main game loop ...
texnician's user avatar
  • 83
46 votes
2 answers
18k views

Python's pickle (I'm talking standard Python 2.5/2.6/2.7 here) cannot pickle locks, file objects etc. It also cannot pickle generators and lambda expressions (or any other anonymous code), because ...
Radim's user avatar
  • 4,276
2 votes
4 answers
883 views

So I am using Python Stackless with heapy on two diffrent machines with the same architectures but slightly different C compilers. Heapy works perfectly fine on the first one, but I get a core dump ...
theRealWorld's user avatar
  • 1,218
3 votes
2 answers
2k views

I'm fairly new to programming and I've been working with Python for a few months now. I'm trying to get a concept to work with Stackless, but just can't figure out how (though I've written other test ...
squid808's user avatar
  • 1,490
3 votes
1 answer
232 views

I'm starting with Stackless Python so it's a whole new amazing world for me. I usually use regular threads, and they normally have Thread-local storage (TLS), which is a very useful feature when you ...
Cartucho's user avatar
  • 3,339
17 votes
2 answers
2k views

I would like to embed a Python interpreter into my .NET application. I'm aware of IronPython, of course, but I'm specifically interested in PyPy, because of its stackless support and microthreads. ...
Joe White's user avatar
  • 98.3k
5 votes
1 answer
509 views

Does the Python Tools for Visual Studio Beta, which includes support for CPython, allow you to develop in Stackless Python? If so, could you expand your answers to include any of the steps necessary ...
Kynth's user avatar
  • 2,607
14 votes
7 answers
4k views

Is there anything for Python that has concurrency like Erlang does, particulary transparent actors over networks? I've looked at things like greenlet and stackless, but they don't seem to have network ...
user avatar
2 votes
3 answers
764 views

Is there something similar to Stackless Python, i.e. a framework that supports continuations, microthreads and lightweight processes in C#? I know that C# 5 is going to support partially some of these ...
Can Gencer's user avatar
  • 8,925
2 votes
1 answer
255 views

I wrote a few games for a competition in Stackless Python and needed to create an executable. Accidentally though, I used CPython 2.6 instead of using Stackless Python 2.5 to build the executable. I ...
Nikwin's user avatar
  • 6,826
3 votes
5 answers
211 views

I wrote a beautiful multithreaded script, and when I ran it, it performed worse with 25 threads than with just direct invocation of the thread handler. Then I discovered the global interpreter lock. ...
alexgolec's user avatar
  • 28.5k
31 votes
3 answers
8k views

My incomplete understanding is that Twisted, Stackless, Greenlet, Eventlet, Coroutines all make use of async network IO and userland threads that are very lightweight and quick to switch. But I'm not ...
Continuation's user avatar
  • 13.1k
2 votes
1 answer
459 views

I need a scripting language for describing very complicated workflows. These workflows need to be paused whenever user input is required, and resumed after it is given (could be months later). Seems ...
Lilith River's user avatar
  • 16.5k
4 votes
1 answer
2k views

Are there any advantages to Stackless Python implementation over Lua's coroutines? What's the difference between them?
eonil's user avatar
  • 86.8k
2 votes
1 answer
141 views

I have a typical producer, consumer pattern. If the producer sends an object over a channel, the producer is blocked until the consumer accepts the object. After the consumer accepts the object, the ...
MarcusMartin's user avatar
  • 131
0 votes
2 answers
658 views

There are many continuation based framework for java, ruby etc but none in python. Nagare framework somewhat solves the problem but it do not use standard python and uses stackless python to solve ...
iamgopal's user avatar
  • 9,152
18 votes
7 answers
21k views

I've been experimenting with embedding different scripting languages in a C++ application, currently I'm trying Stackless Python 3.1. I've tried several tutorials and examples, what few I can find, to ...
Sion Sheevok's user avatar
  • 4,215
0 votes
2 answers
443 views

anyone using nagare framework on google app engine ? it seems interesting, but i could not find any documentaiton on how to use it on google app engine, as it uses stackless python. so any chances ...
iamgopal's user avatar
  • 9,152
46 votes
6 answers
27k views

I am looking for an easy-to-learn Actor library or framework for Python 2.x. I have tried Candygram and Twisted but I did not like them. I'd like something that will be easy to extend to suppero ...
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daitangio
1 vote
1 answer
373 views

Stackless Experts, I have managed to create tasklets under Stackless Python (both from the Stackless and the C side). It seems to me that in order to create a tasklet in Stackless, you bind an ...
Lin's user avatar
  • 355
35 votes
4 answers
22k views

We're using Twisted extensively for apps requiring a great deal of asynchronous io. There are some cases where stuff is cpu bound instead and for that we spawn a pool of processes to do the work and ...
Khorkrak's user avatar
  • 4,045

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