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python Programming Glossary: metWhat are the correct usage/parameter values for HoughCircles in OpenCV for Iris detection? http://stackoverflow.com/questions/10716464/what-are-the-correct-usage-parameter-values-for-houghcircles-in-opencv-for-iris are the correct usage parameter values for HoughCircles in OpenCV for Iris detection I've.. get the idea in plain English about the usage and parameters for HoughCircles specially the ones after CV_HOUGH_GRADIENT.. frame python opencv computer vision image recognition biometrics share improve this question HoughCircles can be kind..
why can't I change only a single element in a nested list in Python http://stackoverflow.com/questions/10941032/why-cant-i-change-only-a-single-element-in-a-nested-list-in-python only a single element in a nested list in Python I just met something really strange of Python out 0 3 3 out 0 0 0 0 0 0.. a single element in a nested list in Python I just met something really strange of Python out 0 3 3 out 0 0 0 0 0 0 0 0 0..
Python/Django: Which authorize.net library should I use? http://stackoverflow.com/questions/1637902/python-django-which-authorize-net-library-should-i-use question Long story short none of the existing solutions met my needs. They were either unmaintained uncommented untested..
Checking the strength of a password (how to check conditions) http://stackoverflow.com/questions/16709638/checking-the-strength-of-a-password-how-to-check-conditions two of the conditions then it is med and if all have been met it is strong. It just does not seem to work. The weak and strong.. . You may want to familiarize yourself with the string methods . There are handy .islower and .isupper methods available.. the string methods . There are handy .islower and .isupper methods available that you might want to try out for example 'abc'.islower..
Most efficient way of making an if-elif-elif-else statement when the else is done the most? http://stackoverflow.com/questions/17166074/most-efficient-way-of-making-an-if-elif-elif-else-statement-when-the-else-is-don which 99 of the time the else statement is executed if something 'this' doThis elif something 'that' doThat elif something.. statement is executed if something 'this' doThis elif something 'that' doThat elif something 'there' doThere else doThisMostOfTheTime.. 'this' doThis elif something 'that' doThat elif something 'there' doThere else doThisMostOfTheTime This construct..
How do I abort the execution of a Python script? [duplicate] http://stackoverflow.com/questions/179369/how-do-i-abort-the-execution-of-a-python-script script that I want to stop executing if a condition is met. For example done True if done # quit stop exit else # do other.. exit else # do other stuff Essentially I am looking for something that behaves equivalently to the 'return' keyword in the..
Count non-empty end-leafs of a python dicitonary/array data structure - recursive algorithm? http://stackoverflow.com/questions/18069262/count-non-empty-end-leafs-of-a-python-dicitonary-array-data-structure-recursiv out the resulting list and check if your condition is met like elem '' or not elem or whatever x #your x as posted def..
Speeding up a closest point on a hyperbolic paraboloid algorithm http://stackoverflow.com/questions/18858448/speeding-up-a-closest-point-on-a-hyperbolic-paraboloid-algorithm closest_d closest_u closest_v # Threshold hasn't been met set v0 anf v1 limits to either side of closest_v and keep recursing.. surface is as it seems a hyperbolic paraboloid you can parametrize a point s on it as s p0 u p1 p0 v p3 p0 u v p2 p3 p1 p0.. without scipy... The vector joining the point s parametrized as above with a generic point p is p s . TO find out the..
Cost of exception handlers in Python http://stackoverflow.com/questions/2522005/cost-of-exception-handlers-in-python faster than an explicit if as long as the condition is not met. But it's all within the same order of magnitude and unlikely.. to matter either way. Only if the condition is actually met then the if version is significantly faster. share improve..
How can I use the python HTMLParser library to extract data from a specific div tag? http://stackoverflow.com/questions/3276040/how-can-i-use-the-python-htmlparser-library-to-extract-data-from-a-specific-div a list of strings possibly empty if no triggering tag was met . Your code from outside the class can access the list directly.. the end of the parse or you can add appropriate accessor methods for the purpose depending on what exactly is your goal...
How to correct bugs in this Damerau-Levenshtein implementation? http://stackoverflow.com/questions/3431933/how-to-correct-bugs-in-this-damerau-levenshtein-implementation convert the code to Cython. on my test data the reference method manages to deliver results for 11 000 comparisons for pairs.. pairs of words aound 12 letters long while the Cythonized method does over 200 000 comparisons per second. Sadly the results.. runnable when you cut it down all too much. i believe all methods except editdistance to work correctly but feel free to point..
http://stackoverflow.com/questions/361675/python-doctest-vs-unittest
grouping objects to achieve a similar mean property for all groups http://stackoverflow.com/questions/4462531/grouping-objects-to-achieve-a-similar-mean-property-for-all-groups such that each group has approximately the same arithmetic mean of object weights. The groups won't necessarily have.. that the rules about the number of elements per bucket are met. It is a heuristic and not an algorithm because it tends produce..
Are urllib2 and httplib thread safe? http://stackoverflow.com/questions/5825151/are-urllib2-and-httplib-thread-safe that calling urlopen with a Request object as the url parameter may mutate the Request object see the source for OpenerDirector.open.. urlopen is thread safe if the following conditions are met install_opener is not called from another thread. A non shared..
Separating Axis Theorem and Python http://stackoverflow.com/questions/6013333/separating-axis-theorem-and-python and the loop breaks. If those conditions are never met for all the axis then we have a collision I hope this was the..
How Python can get binary data(char*) from C++ by SWIG? http://stackoverflow.com/questions/8163976/how-python-can-get-binary-datachar-from-c-by-swig C by SWIG I am using C functions in Python by SWIG and I met a problem now. When I pass a char from C to Python the char..
Find the oldest file (recursively) in a directory http://stackoverflow.com/questions/837606/find-the-oldest-file-recursively-in-a-directory deleting the oldest .avi files until that condition is met. python linux file io share improve this question Hm. Nadia's.. fn os.stat fn .st_mtime Note that using the .endswith method allows calls as oldest_files_in_tree home user 20 .avi .mov..
find first list item that matches criteria http://stackoverflow.com/questions/9868653/find-first-list-item-that-matches-criteria I could also use a loop with break once the criteria was met but I thought there could be a more pythonic elegant solution...
scipy.optimize.leastsq with bound constraints http://stackoverflow.com/questions/9878558/scipy-optimize-leastsq-with-bound-constraints a non linear least squares type problem e.g. fitting a parametric function to a large dataset but including bounds and constraints.. bounds and constraints e.g. minima and maxima for the parameters to be optimised . At the moment I am using the python version.. a 10 vector f0 p ... f9 p and also want 0 p_i 1 for 3 parameters. Consider the tub function max p 0 p 1 which is 0 inside..
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