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python Programming Glossary: performancePython List Comprehension Vs. Map http://stackoverflow.com/questions/1247486/python-list-comprehension-vs-map loops best of 3 5.58 usec per loop An example of how performance comparison gets completely reversed when map needs a lambda..
Get last n lines of a file with Python, similar to tail http://stackoverflow.com/questions/136168/get-last-n-lines-of-a-file-with-python-similar-to-tail Using these high level I O packages I doubt you'll see any performance consequence of trying to align on OS block boundaries. If you..
Python: Difference between class and instance attributes http://stackoverflow.com/questions/207000/python-difference-between-class-and-instance-attributes creating a lot of instances is there any difference in performance or space requirements for the two styles When you read the code.. python attributes share improve this question Beyond performance considerations there is a significant semantic difference. In..
Flatten (an irregular) list of lists in Python http://stackoverflow.com/questions/2158395/flatten-an-irregular-list-of-lists-in-python example a little easier to read and probably boost the performance. def flatten l for el in l if isinstance el collections.Iterable..
Flattening a shallow list in Python http://stackoverflow.com/questions/406121/flattening-a-shallow-list-in-python the best way to flatten a shallow list like this balancing performance and readability. Update Thanks to everyone who contributed to..
How to improve performance of this code? http://stackoverflow.com/questions/4295799/how-to-improve-performance-of-this-code to improve performance of this code Thanks to some help from people here I was able.. it finishes. What should I do to improve this code Mostly performance wise any other suggestions are welcome also . Thanks. python.. any other suggestions are welcome also . Thanks. python performance share improve this question I've been tripped up by this..
Generator Expressions vs. List Comprehension http://stackoverflow.com/questions/47789/generator-expressions-vs-list-comprehension probably better off with a list comprehension. Since performance is the most common reason to choose one over the other my advice..
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 into a std string. Bingo This resulted in equivalent performance for both python and c . 3 333 333 LPS with my input data which.. of getline. But I'm still curious if people think this performance hit from std string getline is typical and reasonable. Edit.. above results in code that runs faster than Python. New performance comparison this is on my 2011 Macbook Pro using the original..
Simple Digit Recognition OCR in OpenCV-Python http://stackoverflow.com/questions/9413216/simple-digit-recognition-ocr-in-opencv-python values as features. I was not worried about accuracy or performance i just wanted it to work atleast with least accuracy I took..
What is different between all these OpenCV Python interfaces? http://stackoverflow.com/questions/10417108/what-is-different-between-all-these-opencv-python-interfaces on how NumPy speed up cv2 is in Stack Overflow question Performance comparison of OpenCV Python interfaces cv and cv2 . pyopencv..
http://stackoverflow.com/questions/1108918/how-to-store-an-ip-in-mysql slightly more for separate fields for some overhead. Performance Using a single field will yield much better performance its..
Is it better to use an exception or a return code in Python? http://stackoverflow.com/questions/1152541/is-it-better-to-use-an-exception-or-a-return-code-in-python from Microsoft about the use of exceptions in .NET Performance Considerations ... Throw exceptions only for extraordinary conditions..
Python Google App Engine Image object http://stackoverflow.com/questions/13810823/python-google-app-engine-image-object Google can serve the images for you using Google High Performance Image serving. This means you have to create once a serving_url..
http://stackoverflow.com/questions/1382998/latin-1-to-ascii with those no doubt before what's now its body . Performance is also interesting. On my laptop with Mac OS X 10.5 and system..
Python Vs. Ruby for Metaprogramming [closed] http://stackoverflow.com/questions/144661/python-vs-ruby-for-metaprogramming the way one thinks about programming. Somewhat important Performance. It would be nice if performance was decent but when performance..
Python, List running processes 64Bit Windows http://stackoverflow.com/questions/1632234/python-list-running-processes-64bit-windows on activestate that does a similar thing but uses the Performance Data Helper library PDH instead. I have tested this on my Windows..
Python - Is a dictionary slow to find frequency of each character? http://stackoverflow.com/questions/2522152/python-is-a-dictionary-slow-to-find-frequency-of-each-character probability frequency share improve this question Performance comparison Note time in the table doesn't include the time it..
Performance comparison of Thrift, Protocol Buffers, JSON, EJB, other? http://stackoverflow.com/questions/296650/performance-comparison-of-thrift-protocol-buffers-json-ejb-other comparison of Thrift Protocol Buffers JSON EJB other We're..
Create List of Single Item Repeated n Times in Python http://stackoverflow.com/questions/3459098/create-list-of-single-item-repeated-n-times-in-python references to the same list not n independent empty lists. Performance testing At first glance it seems that repeat is the fastest..
How can I speed up fetching pages with urllib2 in python? http://stackoverflow.com/questions/3490173/how-can-i-speed-up-fetching-pages-with-urllib2-in-python dependency I'll call it right tool for the right job. Performance I think most people would agree that performance of this task..
check if all elements in a list are identical http://stackoverflow.com/questions/3844801/check-if-all-elements-in-a-list-are-identical using the standard equality operator False otherwise. Performance of course I prefer not to incur any unnecessary overhead. I..
http://stackoverflow.com/questions/477096/python-import-coding-style extremely difficult to refactor or repackage. Notes On Performance Because of the way python caches modules there isn't a performance..
C++ string parsing (python style) http://stackoverflow.com/questions/536148/c-string-parsing-python-style commas How can this be done in C without too much headache Performance is not very important this parsing only happens one time so..
Why not always use psyco for Python code? http://stackoverflow.com/questions/575385/why-not-always-use-psyco-for-python-code this process consumes. It is a subtle balance to keep. 2 Performance can actually be harmed by Psyco compilation. Again from the..
Charts in django Web Applications http://stackoverflow.com/questions/609944/charts-in-django-web-applications one that gave us exactly the kind of control we needed. Performance generating PNG's was fine for us but... it was a highly specialized..
Serving dynamically generated ZIP archives in Django http://stackoverflow.com/questions/67454/serving-dynamically-generated-zip-archives-in-django server not counting timeouts if the archives are large . Performance wise approach is to cache generated output somewhere in filesystem..
SQLite Performance Benchmark — why is :memory: so slow…only 1.5X as fast as disk? http://stackoverflow.com/questions/764710/sqlite-performance-benchmark-why-is-memory-so-slow-only-1-5x-as-fast-as-d Performance Benchmark &mdash why is memory so slow&hellip only 1.5X as fast..
Construct a tree from list os file paths (Python) - Performance dependent http://stackoverflow.com/questions/8484943/construct-a-tree-from-list-os-file-paths-python-performance-dependent a tree from list os file paths Python Performance dependent Hey I am working on a very high performance file..
Convert RGBA PNG to RGB with PIL http://stackoverflow.com/questions/9166400/convert-rgba-png-to-rgb-with-pil image.split 3 # 3 is the alpha channel return background Performance The simple non compositing alpha_to_color function is the fastest..
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