python Programming Glossary: process

http://stackoverflow.com/questions/1009860/command-line-arguments-in-python

action parameter style command line interfaces How can I process command line arguments in Python How do I format positional..

Python output buffering

http://stackoverflow.com/questions/107705/python-output-buffering

a mailing list You can skip buffering for a whole python process using python u or# usr bin env python u etc or by setting the..

subprocess with timeout

http://stackoverflow.com/questions/1191374/subprocess-with-timeout

with timeout Here's the Python code to run an arbitrary command.. data or raise an exception on non zero exit codes proc subprocess.Popen cmd stderr subprocess.STDOUT # merge stdout and stderr.. on non zero exit codes proc subprocess.Popen cmd stderr subprocess.STDOUT # merge stdout and stderr stdout subprocess.PIPE shell..

How can I explicitly free memory in Python?

http://stackoverflow.com/questions/1316767/how-can-i-explicitly-free-memory-in-python

triangles. The algorithm is read an input file process the file and create a list of triangles represented by their..

Python - How do I pass a string into subprocess.Popen (using the stdin argument)?

http://stackoverflow.com/questions/163542/python-how-do-i-pass-a-string-into-subprocess-popen-using-the-stdin-argument

How do I pass a string into subprocess.Popen using the stdin argument If I do the following import.. using the stdin argument If I do the following import subprocess from cStringIO import StringIO subprocess.Popen 'grep' 'f' stdout.. import subprocess from cStringIO import StringIO subprocess.Popen 'grep' 'f' stdout subprocess.PIPE stdin StringIO 'one..

How do I watch a file for changes using Python?

http://stackoverflow.com/questions/182197/how-do-i-watch-a-file-for-changes-using-python

using Python I have a log file being written by another process which I want to watch for changes. Each time a change occurrs.. change occurrs I'd like to read the new data in to do some processing on it. What's the best way to do this I was hoping there'd..

What is memoization and how can I use it in Python?

http://stackoverflow.com/questions/1988804/what-is-memoization-and-how-can-i-use-it-in-python

can get more complicated and encapsulate the memoization process into a class class Memoize def __init__ self f self.f f self.memo..

The Python yield keyword explained

http://stackoverflow.com/questions/231767/the-python-yield-keyword-explained

the inner mechanisms of iteration Iteration is a process implying iterables implementing the __iter__ method and iterators..

What kinds of patterns could I enforce on the code to make it easier to translate to another programming language?

http://stackoverflow.com/questions/3455456/what-kinds-of-patterns-could-i-enforce-on-the-code-to-make-it-easier-to-translat

dependency injection as they might make the translation process easier and less error prone. I'll make use of Python's parser..

Suggestions for a Cron like scheduler in Python?

http://stackoverflow.com/questions/373335/suggestions-for-a-cron-like-scheduler-in-python

gratefully received. Edit I'm not interested in launching processes just jobs also written in Python python functions. By necessity.. this would be a different thread but not in a different process. To this end I'm looking for the expressivity of the cron time..

How do I unload (reload) a Python module?

http://stackoverflow.com/questions/437589/how-do-i-unload-reload-a-python-module

effects of your code changes without restarting the server process itself. To quote from the docs Python modules code is recompiled..

How to terminate a python subprocess launched with shell=True

http://stackoverflow.com/questions/4789837/how-to-terminate-a-python-subprocess-launched-with-shell-true

to terminate a python subprocess launched with shell True I'm launching a subprocess with the.. subprocess launched with shell True I'm launching a subprocess with the following command p subprocess.Popen cmd stdout subprocess.PIPE.. I'm launching a subprocess with the following command p subprocess.Popen cmd stdout subprocess.PIPE shell True However when I try..

How do I check if a file exists using Python?

http://stackoverflow.com/questions/82831/how-do-i-check-if-a-file-exists-using-python

to use the following approach try with open 'filename' process except IOError print 'Oh dear.' os.path.exists only tells you..

Simple Digit Recognition OCR in OpenCV-Python

http://stackoverflow.com/questions/9413216/simple-digit-recognition-ocr-in-opencv-python

we do as follows a We load the image used for testing b process the image as earlier and extract each digit using contour methods..

subprocess with timeout

http://stackoverflow.com/questions/1191374/subprocess-with-timeout

print self.process.returncode command Command echo 'Process started' sleep 2 echo 'Process finished' command.run timeout.. command Command echo 'Process started' sleep 2 echo 'Process finished' command.run timeout 3 command.run timeout 1 The output.. The output of this snippet in my machine is Thread started Process started Process finished Thread finished 0 Thread started Process..

Popen waiting for child process even when the immediate child has terminated

http://stackoverflow.com/questions/13243807/popen-waiting-for-child-process-even-when-the-immediate-child-has-terminated

PIPE stdout PIPE stderr PIPE kwargs assert not p.poll 1 Process Creation Flags for CreateProcess share improve this answer..

Solving embarassingly parallel problems using Python multiprocessing

http://stackoverflow.com/questions/2359253/solving-embarassingly-parallel-problems-using-python-multiprocessing

the problem into three parts which can all run in parallel Process the input file into raw data lists iterables of integers Calculate.. chunking to decrease communication between # processes. # Process the parsed data as soon as any chunks appear on the # queue.. self.outq multiprocessing.Queue self.pin multiprocessing.Process target self.parse_input_csv args self.pout multiprocessing.Process..

Speed up bitstring/bit operations in Python?

http://stackoverflow.com/questions/2897297/speed-up-bitstring-bit-operations-in-python

bit positions 0 and 1 as not prime. bitmap gmpy2.xmpz 3 # Process 2 separately. This allows us to use p p for the step size #..

Python thread pool similar to the multiprocessing Pool?

http://stackoverflow.com/questions/3033952/python-thread-pool-similar-to-the-multiprocessing-pool

import ThreadPool It is implemented using a dummy Process class wrapping a python thread. This thread based Process class.. Process class wrapping a python thread. This thread based Process class can be found in multiprocessing.dummy which is mentioned..

Multiprocessing: using Pool.map on a function defined in a class

http://stackoverflow.com/questions/3288595/multiprocessing-using-pool-map-on-a-function-defined-in-a-class

for recursive use of parmap. from multiprocessing import Process Pipe from itertools import izip def spawn f def fun pipe x pipe.send.. return fun def parmap f X pipe Pipe for x in X proc Process target spawn f args c x for x p c in izip X pipe p.start for..

Process escape sequences in a string in Python

http://stackoverflow.com/questions/4020539/process-escape-sequences-in-a-string-in-python

escape sequences in a string in Python Sometimes when I get..

How can I improve my paw detection?

http://stackoverflow.com/questions/4087919/how-can-i-improve-my-paw-detection

rect for rect in rects title ax.set_title 'Time 0.0 ms' # Process and display each frame for time frame in infile paw_slices find_paws..

Use numpy array in shared memory for multiprocessing

http://stackoverflow.com/questions/7894791/use-numpy-array-in-shared-memory-for-multiprocessing

not just as a ctypes array. from multiprocessing import Process Array import scipy def f a a 0 a 0 if __name__ '__main__' #.. arr s arr 2 # Create start and finish the child process p Process target f args a p.start p.join # Print out the changed values..

How do I get 'real-time' information back from a subprocess.Popen in python (2.5)

http://stackoverflow.com/questions/874815/how-do-i-get-real-time-information-back-from-a-subprocess-popen-in-python-2-5

stderr or potentially both either together or separately Process data from the subprocess as it comes in perhaps firing events..

Using Python's Multiprocessing module to execute simultaneous and separate SEAWAT/MODFLOW model runs

http://stackoverflow.com/questions/9874042/using-pythons-multiprocessing-module-to-execute-simultaneous-and-separate-seawa

package XYZ package Python Multiprocessing queue My Process I have 100 different parameter sets I'd like to run through.. subprocess.check_call seawatV4x64 swt_nam def worker queue Process files from the queue. for args in iter queue.get None try run.. seawatV4x64 swt_nam cwd cwd def worker queue Process files from the queue. for args in iter queue.get None try run..