¡@
python Programming Glossary: signalHow do I capture SIGINT in Python? http://stackoverflow.com/questions/1112343/how-do-i-capture-sigint-in-python Every now and then I want to kill the script with a Ctrl C signal and I'd like to do some cleanup. In Perl I'd do this SIG 'INT'.. How do I do the analogue of this in Python python control signals share improve this question Register your handler with.. share improve this question Register your handler with signal.signal like this # usr bin env python import signal import sys..
Showing the stack trace from a running Python application http://stackoverflow.com/questions/132058/showing-the-stack-trace-from-a-running-python-application to time and I can't find out where. Is there any way to signal Python interpreter to show you the exact code that's running.. reasons. Its a bit hacky and only works on unix requires signals import code traceback signal def debug sig frame Interrupt.. only works on unix requires signals import code traceback signal def debug sig frame Interrupt running process and provide a..
Keyboard input with timeout in Python http://stackoverflow.com/questions/1335507/keyboard-input-with-timeout-in-python instead of when read blocks. Better try this import signal TIMEOUT 5 # number of seconds your want for timeout def interrupted.. frame called when read times out print 'interrupted ' signal.signal signal.SIGALRM interrupted def input try print 'You have.. called when read times out print 'interrupted ' signal.signal signal.SIGALRM interrupted def input try print 'You have 5 seconds..
Why does Python print unicode characters when the default encoding is ASCII? http://stackoverflow.com/questions/2596714/why-does-python-print-unicode-characters-when-the-default-encoding-is-ascii 4 bytes and so forth. the inner '10' flag bits are used to signal the beginning of an inner byte. again the x's mark the space..
Where to put Django startup code? http://stackoverflow.com/questions/2781383/where-to-put-django-startup-code your first user. There is talk about adding a startup signal but that won't be available soon a major problem for example.. be available soon a major problem for example is when this signal should be sent Related Ticket https code.djangoproject.com ticket..
How to limit execution time of a function call in Python http://stackoverflow.com/questions/366682/how-to-limit-execution-time-of-a-function-call-in-python I'm not sure how cross platform this might be but using signals and alarm might be a good way of looking at this. With a little.. and usable in any situation. http docs.python.org library signal.html So your code is going to look something like this. import.. So your code is going to look something like this. import signal def signal_handler signum frame raise Exception Timed out signal.signal..
Open document with default application in Python http://stackoverflow.com/questions/434597/open-document-with-default-application-in-python True if retcode 0 print sys.stderr Child was terminated by signal retcode else print sys.stderr Child returned retcode except..
Stop reading process output in Python without hang? http://stackoverflow.com/questions/4417962/stop-reading-process-output-in-python-without-hang atomic operation. Otherwise the output might be corrupted. signal.alarm solution You could use signal.alarm to call the process.terminate.. might be corrupted. signal.alarm solution You could use signal.alarm to call the process.terminate after specified timeout.. Based on @Alex Martelli's answer import collections import signal import subprocess class Alarm Exception pass def alarm_handler..
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 question Use a process group so as to enable sending a signal to all the process in the groups. For that you should attach.. make it the group leader of the processes. So now when a signal is sent to the process group leader it's transmitted to all.. processes of this group. Here's the code import os import signal import subprocess # The os.setsid is passed in the argument..
Play mp3 using Python, PyQt, and Phonon http://stackoverflow.com/questions/1083118/play-mp3-using-python-pyqt-and-phonon from PyQt4.QtGui import QFrame from PyQt4.QtCore import SIGNAL from PyQt4.phonon import Phonon class MainWindow QMainWindow.. QFrame.NoFrame self.connect self.m_fileView SIGNAL updatePreviewWidget const QModelIndex self.play def play self..
time.sleep() required to keep QThread responsive? http://stackoverflow.com/questions/14665636/time-sleep-required-to-keep-qthread-responsive self.create_status_bar self.connect self.thread SIGNAL finished self.update_UI self.connect self.thread SIGNAL terminated.. SIGNAL finished self.update_UI self.connect self.thread SIGNAL terminated self.update_UI self.connect self.startButton SIGNAL.. terminated self.update_UI self.connect self.startButton SIGNAL clicked self.start_acquisition self.connect self.stopButton..
multiprocessing problem [pyqt, py2exe] http://stackoverflow.com/questions/2073942/multiprocessing-problem-pyqt-py2exe __main__ a QApplication sys.argv QObject.connect a SIGNAL lastWindowClosed a SLOT quit w MainWindow w.show a.exec_ Any.. a QApplication sys.argv QObject.connect a SIGNAL lastWindowClosed a SLOT quit w MainWindow w.show a.exec_ Reference..
http://stackoverflow.com/questions/2190502/screen-scraping-with-python signal.SIGINT signal.SIG_DFL self.connect self SIGNAL 'loadFinished bool ' self._finished_loading self.mainFrame .load..
Why is PyQt connect() syntax so verbose? http://stackoverflow.com/questions/4031489/why-is-pyqt-connect-syntax-so-verbose by the verbose syntax. Why do we have self.connect dial SIGNAL valueChanged int spinbox.setValue I would much prefer to write.. new style signals which are less verbose self.connect dial SIGNAL valueChanged int spinbox.setValue Becomes dial.valueChanged.connect..
PyQT4: Drag and drop files into QListWidget http://stackoverflow.com/questions/4151637/pyqt4-drag-and-drop-files-into-qlistwidget self QtCore.QObject.connect self.ui.listWidget QtCore.SIGNAL dropped self.picture_dropped def picture_dropped self l for.. .urls l.append str url.toLocalFile self.emit SIGNAL dropped l else event.ignore if __name__ __main__ app QtGui.QApplication.. .urls links.append str url.toLocalFile self.emit QtCore.SIGNAL dropped links else event.ignore class MainForm QtGui.QMainWindow..
problem displaying sympy rendered svg in python http://stackoverflow.com/questions/5265226/problem-displaying-sympy-rendered-svg-in-python layout self.lineedit.setFocus self.connect self.lineedit SIGNAL textChanged const QString self.updateUi def updateUi self text..
Choosing between different switch-case replacements in Python - dictionary or if-elif-else? http://stackoverflow.com/questions/594442/choosing-between-different-switch-case-replacements-in-python-dictionary-or-if page.getConnectibles self.connect connectionData object SIGNAL connectionData signal lambda value name connectionData property.. name value self.connect connectionData object SIGNAL connectionData signal self.hackedDisplayArea.update Note The..
Why the QNetworkReply readAll() returns zero bytes? http://stackoverflow.com/questions/7136962/why-the-qnetworkreply-readall-returns-zero-bytes self.networkAccessManager self.connect self.manager SIGNAL finished QNetworkReply self.onFinished def crawl self self.mainFrame..
http://stackoverflow.com/questions/782255/qt-and-context-menu you connect the context menu event to a slot connect w SIGNAL customContextMenuRequested const QPoint this SLOT ctxMenu const.. Qt.CustomContextMenu self.connect self.w SIGNAL 'customContextMenuRequested QPoint ' self.ctxMenu share improve..
How do I find Wally with Python? http://stackoverflow.com/questions/8849869/how-do-i-find-wally-with-python 2009 IEEE International Workshop on MACHINE LEARNING FOR SIGNAL PROCESSING MLSP 2009 they ran a Data Analysis Competition Where's..
PyQt sending parameter to slot when connecting to a signal http://stackoverflow.com/questions/940555/pyqt-sending-parameter-to-slot-when-connecting-to-a-signal Here's an example from the PyQt book self.connect button3 SIGNAL clicked lambda who Three self.anyButton who By the way you can..
Separation of business logic and data access in django http://stackoverflow.com/questions/12578908/separation-of-business-logic-and-data-access-in-django These signals are of course emitted by your commands. Signals have the advantage that you can keep multiple query models.. Celery or similar frameworks. signals.py user_activated Signal providing_args 'user' user_deactivated Signal providing_args.. Signal providing_args 'user' user_deactivated Signal providing_args 'user' forms.py class ActivateUserForm forms.Form..
QtSingleApplication for PySide or PyQt http://stackoverflow.com/questions/12712360/qtsingleapplication-for-pyside-or-pyqt class QtSingleApplication QApplication messageReceived Signal unicode def __init__ self id argv super QtSingleApplication..
Showing the stack trace from a running Python application http://stackoverflow.com/questions/132058/showing-the-stack-trace-from-a-running-python-application frame.f_locals i code.InteractiveConsole d message Signal recieved entering python shell. nTraceback n message ''.join..
Guitar string code in Python? [closed] http://stackoverflow.com/questions/13731726/guitar-string-code-in-python approaches it's an entire field of study. Physical Audio Signal Processing by J.O. Smith is a good starting point as is The..
Music Recognition and Signal Processing http://stackoverflow.com/questions/2068286/music-recognition-and-signal-processing Recognition and Signal Processing I want to build something similar to Tunatic or..
Python, Matplotlib, subplot: How to set the axis range? http://stackoverflow.com/questions/2849286/python-matplotlib-subplot-how-to-set-the-axis-range hspace .7 pylab.subplot h w 1 pylab.title Signal pylab.plot xs rawsignal pylab.subplot h w 2 pylab.title FFT..
Starting Python and PyQt - Tutorials, Books, general approaches [closed] http://stackoverflow.com/questions/3113002/starting-python-and-pyqt-tutorials-books-general-approaches for PyQt . Pay particular attention to the New style Signal and Slot Support it's a huge improvement over the old style...
http://stackoverflow.com/questions/3775912/fourier-space-filtering of this with pictures in Theory and Application of Digital Signal Processing by Lawrence Rabiner and Bernard Gold . It's important..
Signal handlers and logging in Python http://stackoverflow.com/questions/4601674/signal-handlers-and-logging-in-python handlers and logging in Python Documentation for logging module.. python logging signals share improve this question Signal handlers need special handling in UNIX programming at all. Only..
Analyze audio using Fast Fourier Transform http://stackoverflow.com/questions/604453/analyze-audio-using-fast-fourier-transform is given on Wikipedia you could try Understanding Digital Signal Processing 2nd Ed. . It was very helpful for me. So that is..
some Numpy functions return ndarray instead of my subclass http://stackoverflow.com/questions/6190859/some-numpy-functions-return-ndarray-instead-of-my-subclass scipy functions return my subclass here's what I did class Signal np.ndarray def __new__ cls filename #print In __new__ #TEMP.. dtype np.int32 ret ret.view cls # convert to my class i.e. Signal ret.parse_filename filename return ret def __array_finalize__.. #etc here are some usage examples these work as expected s Signal filename s2 s 10 20 type s2 class '__main__.Signal' s3 s 17..
Detecting if an object from one image is in another image with OpenCV http://stackoverflow.com/questions/7881133/detecting-if-an-object-from-one-image-is-in-another-image-with-opencv the papers on SURF. Also consider moving this question to Signal and Image Processing Stack Exchange share improve this answer..
python: windows equivalent of SIGALRM http://stackoverflow.com/questions/8420422/python-windows-equivalent-of-sigalrm platform way and I came up with using a separate thread. Signal based systems did not work on all platforms reliably. Use of..
Throughput differences when using coroutines vs threading http://stackoverflow.com/questions/9247641/throughput-differences-when-using-coroutines-vs-threading while True item random.randint 1 11 if item 10 print Signal Received return else print Added item s item q.put item for.. control info d Added item s pid item q.put item info d Signal Received pid Don't execute code at a module level put it in..
|