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python Programming Glossary: math.sqrthttp://stackoverflow.com/questions/15390807/integer-square-root-in-python At the moment I rolled my own naive one def isqrt n i int math.sqrt n 0.5 if i 2 n return i raise ValueError 'input was not a perfect..
Compare two images the python/linux way http://stackoverflow.com/questions/1927660/compare-two-images-the-python-linux-way file2 h1 image1.histogram h2 image2.histogram rms math.sqrt reduce operator.add map lambda a b a b 2 h1 h2 len h1 return.. image1 .histogram h2 Image.open image2 .histogram rms math.sqrt reduce operator.add map lambda a b a b 2 h1 h2 len h1 on http..
Simple implementation of N-Gram, tf-idf and Cosine similarity in Python http://stackoverflow.com/questions/2380394/simple-implementation-of-n-gram-tf-idf-and-cosine-similarity-in-python v and u. This is equal to u.v u v . return numpy.dot u v math.sqrt numpy.dot u u math.sqrt numpy.dot v v For ngrams def ngrams.. to u.v u v . return numpy.dot u v math.sqrt numpy.dot u u math.sqrt numpy.dot v v For ngrams def ngrams sequence n pad_left False..
Which is faster in Python: x**.5 or math.sqrt(x)? http://stackoverflow.com/questions/327002/which-is-faster-in-python-x-5-or-math-sqrtx is faster in Python x .5 or math.sqrt x I've been wondering this for some time. As the title say.. There are at least 3 ways to do a square root in Python math.sqrt the ' ' operator and pow x .5 . I'm just curious as to the differences.. which is better His response pow and are equivalent math.sqrt doesn't work for complex numbers and links to the C sqrt function...
Gauss-Legendre Algorithm in python http://stackoverflow.com/questions/347734/gauss-legendre-algorithm-in-python division import math def square x return x x a 1 b 1 math.sqrt 2 t 1 4 x 1 for i in range 1000 y a a a b 2 b math.sqrt b y.. 1 math.sqrt 2 t 1 4 x 1 for i in range 1000 y a a a b 2 b math.sqrt b y t t x square y a x 2 x pi square a b 4 t print pi raw_input..
Detect tap with pyaudio from live mic http://stackoverflow.com/questions/4160175/detect-tap-with-pyaudio-from-live-mic it to 1.0 n sample SHORT_NORMALIZE sum_squares n n return math.sqrt sum_squares count class TapTester object def __init__ self self.pa..
Simple Prime Generator in Python http://stackoverflow.com/questions/567222/simple-prime-generator-in-python def main count 3 one 1 while one 1 for x in range 2 int math.sqrt count 1 if count x 0 continue if count x 0 print count count.. main count 3 while True isprime True for x in range 2 int math.sqrt count 1 if count x 0 isprime False break if isprime print..
Speed comparison with Project Euler: C vs Python vs Erlang vs Haskell http://stackoverflow.com/questions/6964392/speed-comparison-with-project-euler-c-vs-python-vs-erlang-vs-haskell usr bin env python3.2 import math def factorCount n square math.sqrt n isquare int square count 1 if isquare square else 0 for candidate..
http://stackoverflow.com/questions/9860667/writing-robust-color-and-size-invariant-circle-detection-with-opencv-based-on f in fs distx f.pt 0 x.pt 0 disty f.pt 1 x.pt 1 dist math.sqrt distx distx disty disty if f.size x.size and dist f.size 2..
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