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python Programming Glossary: fastWhat is different between all these OpenCV Python interfaces? http://stackoverflow.com/questions/10417108/what-is-different-between-all-these-opencv-python-interfaces do any numpy operation here. NumPy is a highly stable and fast array processing library. For example if you load an image an.. . In short with cv2 everything is simplified and pretty fast. A simple discussion on how NumPy speed up cv2 is in Stack Overflow..
Python Numpy Very Large Matrices http://stackoverflow.com/questions/1053928/python-numpy-very-large-matrices with tens or hundreds of millions of rows. It's also very fast my 5 year old laptop can crunch through data doing SQL like..
Why (0-6) is -6 = False? [duplicate] http://stackoverflow.com/questions/11476190/why-0-6-is-6-false used to refer small integers and share them so access is fast. It is an array of 262 pointers to integer objects. Those integer..
Should Python import statements always be at the top of a module? http://stackoverflow.com/questions/128478/should-python-import-statements-always-be-at-the-top-of-a-module share improve this question Module importing is quite fast but not instant. This means that Putting the imports at the..
Why is numpy's einsum faster than numpy's built in functions? http://stackoverflow.com/questions/18365073/why-is-numpys-einsum-faster-than-numpys-built-in-functions is numpy's einsum faster than numpy's built in functions Lets start with three arrays.. best of 3 245 us per loop All of the above are twice as fast with np.einsum . These should be apples to apples comparisons.. of 3 85.1 ms per loop Einsum seems to be at least twice as fast for np.inner np.outer np.kron and np.sum regardless of axes..
Fastest way to list all primes below N in python http://stackoverflow.com/questions/2068372/fastest-way-to-list-all-primes-below-n-in-python .timeit 1 1.1499958793645562 Can it be made even faster EDIT This code has a flaw Since numbers is an unordered set.. tested with psyco for n 1000000 rwh_primes1 was the fastest tested. Method ms rwh_primes1 43.0 sieveOfAtkin 46.4.. tested without psyco for n 1000000 rwh_primes2 was the fastest. Method ms rwh_primes2 68.1 rwh_primes1 93.7 rwh_primes..
convert integer to a string in a given numeric base in python http://stackoverflow.com/questions/2267362/convert-integer-to-a-string-in-a-given-numeric-base-in-python of Python you can either use gmpy which does include a fast completely general int to string conversion function and can..
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 freqs char P but I doubt that this dictionary method is fast enough because it depends on the underlying implementation of.. implementation of the dictionary methods. Is this the fastest method UPDATE there is no increase in speed if collections.. @S.Mark's solutions is at http gist.github.com 347000 The fastest solution is Python extension written in Cython import cython..
Python: Once and for all. What does the Star operator mean in Python? [duplicate] http://stackoverflow.com/questions/2921847/python-once-and-for-all-what-does-the-star-operator-mean-in-python f k How does it work internally in the interpretor Is it fast or not When is it useful and when is it not Should it be used..
Python list comprehension rebind names even after scope of comprehension. Is this right? http://stackoverflow.com/questions/4198906/python-list-comprehension-rebind-names-even-after-scope-of-comprehension-is-thi compromise to make list comprehensions blindingly fast and while it was not a common pitfall for beginners it definitely..
How to improve performance of this code? http://stackoverflow.com/questions/4295799/how-to-improve-performance-of-this-code when you're doing linear searches on lists it can add up fast. What you can do is convert closedlist into a set object. This..
How to write the Fibonacci Sequence in Python http://stackoverflow.com/questions/494594/how-to-write-the-fibonacci-sequence-in-python wolfram This one is pretty easy to implement and very very fast to compute in Python def F n return 1 sqrt 5 n 1 sqrt 5 n 2..
What are some good Python ORM solutions? [closed] http://stackoverflow.com/questions/53428/what-are-some-good-python-orm-solutions web service on the back end. So I really need something fast and lightweight on the back end that I can implement using Python..
Good Python modules for fuzzy string comparison? http://stackoverflow.com/questions/682367/good-python-modules-for-fuzzy-string-comparison Python C extension module contains functions for fast computation of Levenshtein edit distance and edit operations..
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 my original while loop above results in code that runs faster than Python. New performance comparison this is on my 2011.. As suggested by Gandalf The Gray below gets is even faster than scanf or the unsynchronized cin approach. I also learned.. results using an even larger file 100M lines ~3.4GB on a fast server with very fast disk comparing the python the unsynced..
Safety of Python 'eval' For List Deserialization http://stackoverflow.com/questions/1112665/safety-of-python-eval-for-list-deserialization Funny blog post about eval safety Previous Question Blog Fast deserialization in Python The larger context which is I believe..
What is a good python-based Webshop Software? [closed] http://stackoverflow.com/questions/1118372/what-is-a-good-python-based-webshop-software it will be strong competition for Satchmo is Lightning Fast Shop . I haven't used it but I've looked over the code a few..
Fast comparison between two Python dictionary http://stackoverflow.com/questions/1165352/fast-comparison-between-two-python-dictionary comparison between two Python dictionary Supposte I have two..
Does performance differs between Python or C++ coding of OpenCV? http://stackoverflow.com/questions/13432800/does-performance-differs-between-python-or-c-coding-of-opencv using double loops. For eg you can check these articles Fast Array Manipulation in Python A query on performance comparison..
A Fast Prime Number Sieve in Python http://stackoverflow.com/questions/16004407/a-fast-prime-number-sieve-in-python Fast Prime Number Sieve in Python I have been going through prime..
Fast Way to slice image into overlapping patches and merge patches to image http://stackoverflow.com/questions/16774148/fast-way-to-slice-image-into-overlapping-patches-and-merge-patches-to-image Way to slice image into overlapping patches and merge patches..
Fast interpolation of grid data http://stackoverflow.com/questions/16983843/fast-interpolation-of-grid-data interpolation of grid data I have a large 3d np.ndarray of..
Music Recognition and Signal Processing http://stackoverflow.com/questions/2068286/music-recognition-and-signal-processing to an expert just to clarify but I can tell that that the Fast Fourier Transform is used all over the place with this stuff...
Search for string allowing for one mismatch in any location of the string http://stackoverflow.com/questions/2420412/search-for-string-allowing-for-one-mismatch-in-any-location-of-the-string from collections import defaultdict import re _DEBUG 0 # Fast Text Searching with Errors by Sun Wu and Udi Manber # TR 91..
Cleanest & Fastest server setup for Django http://stackoverflow.com/questions/26025/cleanest-fastest-server-setup-for-django Fastest server setup for Django I'm about to deploy a mediumsized.. ask stackoverflow. What i'm looking for is Easy to set up Fast and easy on resources Can serve mediafiles Able to serve multiple.. be faster and easier on resources. mod_fastcgi When using FastCGI you are delegating the serving of Django to another process...
Fast matrix transposition in Python http://stackoverflow.com/questions/2921681/fast-matrix-transposition-in-python matrix transposition in Python Is there any fast method to..
Recognizing notes within recorded sound - Python http://stackoverflow.com/questions/3600795/recognizing-notes-within-recorded-sound-python samples convert them into the frequency domain with a Fast Fourier Transform FFT find the most powerful frequency in the..
Fast prime/factorization module http://stackoverflow.com/questions/4643647/fast-prime-factorization-module prime factorization module I am looking for an implementation..
Fast tensor rotation with NumPy http://stackoverflow.com/questions/4962606/fast-tensor-rotation-with-numpy tensor rotation with NumPy At the heart of an application written..
Python code for Earth mover's Distance http://stackoverflow.com/questions/5101004/python-code-for-earth-movers-distance Distance I am looking for an Earth Mover's distance or Fast EMD implementation in python. Any clues on where to find it..
Analyze audio using Fast Fourier Transform http://stackoverflow.com/questions/604453/analyze-audio-using-fast-fourier-transform audio using Fast Fourier Transform I am trying to create a graphical spectrum.. just be 32 bars. I have read the wikipedia articles on Fast Fourier Transform and Discrete Fourier Transform but I am still..
http://stackoverflow.com/questions/6736590/fast-check-for-nan-in-numpy check for NaN in NumPy I'm looking for the fastest way to check..
http://stackoverflow.com/questions/7591258/fast-n-gram-calculation n gram calculation I'm using NLTK to search for n grams in..
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