python Programming Glossary: originalRemove items from a list while iterating in Python http://stackoverflow.com/questions/1207406/remove-items-from-a-list-while-iterating-in-python Brandon Corfman is correct you will lose reference to the original list unless you do it this way see Alex Martelli's answer for..
A Transpose/Unzip Function in Python (inverse of zip) http://stackoverflow.com/questions/19339/a-transpose-unzip-function-in-python-inverse-of-zip and the second list holds the second item. For example original 'a' 1 'b' 2 'c' 3 'd' 4 # and I want to become... result 'a'..
How to clone a list in python? http://stackoverflow.com/questions/2612802/how-to-clone-a-list-in-python orignal list and instance a.append 'baz' foo.val 5 print original r n slice r n list r n copy r n deepcopy r a b c d e Result.. n slice r n list r n copy r n deepcopy r a b c d e Result original 'foo' 5 'baz' slice 'foo' 5 list 'foo' 5 copy 'foo' 5 deepcopy..
What do *args and **kwargs mean? [duplicate] http://stackoverflow.com/questions/287085/what-do-args-and-kwargs-mean when you 胩e overriding a function and want to call the original function with whatever arguments the user passes in. You don..
http://stackoverflow.com/questions/3455456/what-kinds-of-patterns-could-i-enforce-on-the-code-to-make-it-easier-to-translat The plan is This is geared towards web development. The original and target code will be be sitting on top of frameworks which.. point you find out the machinery is wired to do what it originally does and will really really resist your attempt to make it.. to be a lot of fun . The reason I started to build DMS originally was to build foundations that had very few such assumptions..
Search and replace a line in a file in Python http://stackoverflow.com/questions/39086/search-and-replace-a-line-in-a-file-in-python temp file new_file.close close fh old_file.close #Remove original file remove file_path #Move new file move abs_path file_path..
Flattening a shallow list in Python http://stackoverflow.com/questions/406121/flattening-a-shallow-list-in-python others want to add to or correct these observations. My original reduce statement is redundant and is better written this way.. away the temporary lists you create when you extend the original with the temporary. Edit As J.F. Sebastian says itertools.chain.from_iterable..
How do you create a daemon in Python? http://stackoverflow.com/questions/473620/how-do-you-create-a-daemon-in-python Sander Marechal's code sample is superior to the original which was originally posted in 2004. I once contributed a daemonizer.. code sample is superior to the original which was originally posted in 2004. I once contributed a daemonizer for Pyro but..
How do you remove duplicates from a list in Python whilst preserving order? http://stackoverflow.com/questions/480214/how-do-you-remove-duplicates-from-a-list-in-python-whilst-preserving-order I can use a set to remove duplicates but that destroys the original order. I also know that I can roll my own like this def uniq..
Why is reading lines from stdin much slower in C++ than Python? http://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python Adding cin.sync_with_stdio false Immediately above my original while loop above results in code that runs faster than Python... comparison this is on my 2011 Macbook Pro using the original code the original with the sync disabled and the original python.. this is on my 2011 Macbook Pro using the original code the original with the sync disabled and the original python respectively..
Making a flat list out of list of lists in Python [duplicate] http://stackoverflow.com/questions/952914/making-a-flat-list-out-of-list-of-lists-in-python generates one list once and copies each item over from its original place of residence to the result list also exactly once. share..
Python: How do I pass a variable by reference? http://stackoverflow.com/questions/986006/python-how-do-i-pass-a-variable-by-reference you're done the outer reference will still point at the original object. If you pass an immutable object to a method you still.. noted that this doesn't answer the question that @David originally asked Is there something I can do to pass the variable by..
How to add a second x-axis in matplotlib http://stackoverflow.com/questions/10514315/how-to-add-a-second-x-axis-in-matplotlib 0 1 1000 Y np.cos X 20 ax1.plot X Y ax1.set_xlabel r Original x axis X new_tick_locations np.array .2 .5 .9 def tick_function..
Restricting Python's syntax to execute user code safely. Is this a safe approach? http://stackoverflow.com/questions/10661079/restricting-pythons-syntax-to-execute-user-code-safely-is-this-a-safe-approach to execute user code safely. Is this a safe approach Original question Executing mathematical user code on a python web server..
python : scipy install on ubuntu http://stackoverflow.com/questions/11863775/python-scipy-install-on-ubuntu import _csr ImportError No module named _csr Original exception was Traceback most recent call last File setup.py.. import _csr ImportError No module named _csr Original exception was Traceback most recent call last File setup.py..
How do I get all of the output from my .exe using subprocess and Popen? http://stackoverflow.com/questions/12600892/how-do-i-get-all-of-the-output-from-my-exe-using-subprocess-and-popen me to get the full data of the exe As asked by Sebastian Original exe file last few lines o p Gdd Generic count 1 1000 Cdd Cut..
How to determine a region of interest and then crop an image using OpenCV http://stackoverflow.com/questions/15693900/how-to-determine-a-region-of-interest-and-then-crop-an-image-using-opencv int argc char argv cv Mat img cv imread argv 1 std cout Original image size img.size std endl Convert RGB Mat to GRAY cv Mat.. i vertices i 1 4 cv Scalar 0 255 0 1 CV_AA cv imshow Original img cv waitKey 0 Set the ROI to the area defined by the box..
Fast interpolation of grid data http://stackoverflow.com/questions/16983843/fast-interpolation-of-grid-data as ndimage data np.arange 9 .reshape 3 3 print 'Original n' data print 'Zoomed by 2x n' ndimage.zoom data 2 This yields.. print 'Zoomed by 2x n' ndimage.zoom data 2 This yields Original 0 1 2 3 4 5 6 7 8 Zoomed by 2x 0 0 1 1 2 2 1 1 1 2 2 3 2 2 3.. along all axes. data np.arange 27 .reshape 3 3 3 print 'Original n' data print 'Zoomed by 2x gives an array of shape ' ndimage.zoom..
http://stackoverflow.com/questions/2828953/silence-the-stdout-of-a-function-in-python-without-trashing-sys-stdout-and-resto in python without wrapping a function call like following Original Broken Code from sys import stdout from copy import copy save_stdout..
Cannot redirect output when I run Python script on Windows using just script's name http://stackoverflow.com/questions/3018848/cannot-redirect-output-when-i-run-python-script-on-windows-using-just-scripts-n failed in file object destructor Error in sys.excepthook Original exception was I think I first get this error after upgrading..
Memory Efficient Alternatives to Python Dictionaries http://stackoverflow.com/questions/327223/memory-efficient-alternatives-to-python-dictionaries the fancier compressed structures also described below. Original answer A simple sorted array of strings each string being a..
http://stackoverflow.com/questions/4599456/textually-diffing-json 'one two three four'.split ... 'zero one tree four'.split 'Original' 'Current' ... 'Sat Jan 26 23 30 50 1991' 'Fri Jun 06 10 20.. 'Fri Jun 06 10 20 52 2003' ... lineterm '' ... print line Original Sat Jan 26 23 30 50 1991 Current Fri Jun 06 10 20 52 2003 @@..
Why is my file getting closed if I don't do anything with it for a while? http://stackoverflow.com/questions/6991878/why-is-my-file-getting-closed-if-i-dont-do-anything-with-it-for-a-while getting closed if I don't do anything with it for a while Original situation The application I'm working on at the moment will..
Changing image hue with Python PIL http://stackoverflow.com/questions/7274221/changing-image-hue-with-python-pil to change the color of the image uniformly as shown below Original With hue adjusted to 180 red With hue adjusted to 78 green FYI..
Simple threading in Python 2.6 using thread.start_new_thread() http://stackoverflow.com/questions/849674/simple-threading-in-python-2-6-using-thread-start-new-thread exception in thread started by Error in sys.excepthook Original exception was The information missing in the error is actually..
how is this Strategy Pattern written in Python? (the sample in Wikipedia) http://stackoverflow.com/questions/963965/how-is-this-strategy-pattern-written-in-python-the-sample-in-wikipedia None if func self.execute func def execute self print Original execution def executeReplacement1 print Strategy 1 def executeReplacement2.. strat0.execute strat1.execute strat2.execute This outputs Original execution Strategy 1 Strategy 2 The main differences are You..
Using numpy.take for faster fancy indexing http://stackoverflow.com/questions/14491480/using-numpy-take-for-faster-fancy-indexing of conventional fancy indexing to keep the speed advantage ORIGINAL QUESTION I have a set of look up tables LUTs that I want to..
http://stackoverflow.com/questions/1766669/python-unicodedecodeerror joining a folder name and a file name. You are using the ORIGINAL folder name when you rip out the recursion this won't work you'll..
Why can't I install psycopg2? (Python 2.6.4, PostgreSQL 8.4, OS X 10.6.3) http://stackoverflow.com/questions/3029274/why-cant-i-install-psycopg2-python-2-6-4-postgresql-8-4-os-x-10-6-3 install psycopg2 Python 2.6.4 PostgreSQL 8.4 OS X 10.6.3 ORIGINAL MESSAGE now outdated After running python setup.py install I..
python enumeration class for ORM purposes http://stackoverflow.com/questions/3588996/python-enumeration-class-for-orm-purposes cls cls.__new__ staticmethod __new__ return cls ORIGINAL TEXT I am using SQLAlchemy as the object relational mapping..
http://stackoverflow.com/questions/4226941/python-ioerror-errno-22-invalid-argument-when-using-cpickle-to-write-large 5 Note that C is a local drive and Z is a network drive. ORIGINAL QUESTION Python 2.6.4 on Windows XP crashes if I use cPickle..
Installing PIL to use with Django on Mac OS X http://stackoverflow.com/questions/5075620/installing-pil-to-use-with-django-on-mac-os-x about using virtualenvwrapper or just view the screencast ORIGINAL You can also instal PIL using MacPorts . The package name is..
numpy float: 10x slower than builtin in arithmetic operations? http://stackoverflow.com/questions/5956783/numpy-float-10x-slower-than-builtin-in-arithmetic-operations 32 bit ActiveState Python 3.1.3.5 Numpy 1.5.1 END OF EDIT ORIGINAL QUESTION I am getting really weird timings for the following..
Search and replace multiple lines in xml/text files using python http://stackoverflow.com/questions/9058867/search-and-replace-multiple-lines-in-xml-text-files-using-python from FileDesc_obj.spatialReference.name u'GCS_GDA_1994' ORIGINAL POST I am building up a program to generate xml metadata files..
Suppressing treatment of string as iterable http://stackoverflow.com/questions/9168904/suppressing-treatment-of-string-as-iterable refuted by the use cases I found in both sre and difflib. ORIGINAL QUESTION While it's a neat feature of the language that a string..
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