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python Programming Glossary: sizesFFT-based 2D convolution and correlation in Python http://stackoverflow.com/questions/1100100/fft-based-2d-convolution-and-correlation-in-python the latest revision has been sped up by using power of two sizes internally and then sped up more by using real FFT for real..
Get MD5 hash of big files in Python http://stackoverflow.com/questions/1131220/get-md5-hash-of-big-files-in-python function. The problem is with very big files that their sizes could exceed RAM size. How to get the MD5 hash of a file without..
How to create an optimized packing function in python? http://stackoverflow.com/questions/1170478/how-to-create-an-optimized-packing-function-in-python will have x products in their cart with possibly varying sizes and weight. So I want to give that list of products to the function..
Writing Python bindings for C++ code that use OpenCV http://stackoverflow.com/questions/12957492/writing-python-bindings-for-c-code-that-use-opencv CV_MAX_DIM 1 elemsize CV_ELEM_SIZE1 type const npy_intp _sizes PyArray_DIMS o const npy_intp _strides PyArray_STRIDES o bool.. o bool transposed false for int i 0 i ndims i size i int _sizes i step i size_t _strides i if ndims 0 step ndims 1 elemsize.. ~NumpyAllocator void allocate int dims const int sizes int type int refcount uchar datastart uchar data size_t step..
How can I explicitly free memory in Python? http://stackoverflow.com/questions/1316767/how-can-i-explicitly-free-memory-in-python In the meanwhile I'm getting memory errors because of the sizes of the lists. What is the best way to tell Python that I no..
Stream large binary files with urllib2 to file http://stackoverflow.com/questions/1517616/stream-large-binary-files-with-urllib2-to-file break fp.write chunk experiment a bit with various CHUNK sizes to find the sweet spot for your requirements. share improve..
Get other running processes window sizes in Python http://stackoverflow.com/questions/151846/get-other-running-processes-window-sizes-in-python other running processes window sizes in Python This isn't as malicious as it sounds I want to get..
Is it possible to map a discontiuous data on disk to an array with python? http://stackoverflow.com/questions/16515465/is-it-possible-to-map-a-discontiuous-data-on-disk-to-an-array-with-python 32 8 for int16 byte_size 16 8 and so forth... If the sizes are constant you can load the data in a 2D array like shape..
http://stackoverflow.com/questions/1819124/image-comparison-algorithm pixelization. The fact that you have images of different sizes complicates things but you didn't give enough information about..
Python memory usage? loading large dictionaries in memory http://stackoverflow.com/questions/2211965/python-memory-usage-loading-large-dictionaries-in-memory allows for a pointer to each item it doesn't allow for the sizes of the items. A similar analysis of lists shows that sys.getsizeof.. 36 4 len list_object ... again it is necessary to add the sizes of the items. There is a further consideration CPython overallocates..
Performance comparison of Thrift, Protocol Buffers, JSON, EJB, other? http://stackoverflow.com/questions/296650/performance-comparison-of-thrift-protocol-buffers-json-ejb-other well as serialization deserialization for various messages sizes comparing EJB3 Thrift and Protocol Buffers on Linux Primarily..
http://stackoverflow.com/questions/3045556/how-to-profile-my-code You may have multiple performance problems of different sizes. If you clean out any one of them the remaining ones will take..
How to change the font size on a matplotlib plot http://stackoverflow.com/questions/3899980/how-to-change-the-font-size-on-a-matplotlib-plot on a matplotlib plot I know how to change the tick label sizes this is done with import matplotlib matplotlib.rc 'xtick' labelsize..
Is it possible to specify your own distance function using Scikits.Learn K-Means Clustering? http://stackoverflow.com/questions/5529625/is-it-possible-to-specify-your-own-distance-function-using-scikits-learn-k-means .mean axis 0 if verbose print kmeans d iterations cluster sizes jiter np.bincount xtoc if verbose 2 r50 np.zeros k r90 np.zeros.. works on scipy.sparse matrices. 3 Always check cluster sizes after k means. If you're expecting roughly equal sized clusters..
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 getting 1.5X speedups. I experimented with several other sizes of dbs and query sets the advantage of memory does seem to go.. 1.5X as long as memory for a fairly wide range of query sizes. ramanujan ~ python OO sqlite_memory_vs_disk_clean.py disk memory..
http://stackoverflow.com/questions/9860667/writing-robust-color-and-size-invariant-circle-detection-with-opencv-based-on different circles with different colors and in different sizes are detected. Maybe using the Hough transform is not the best..
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