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python Programming Glossary: efficientlyHow to efficiently calculate a running standard deviation? http://stackoverflow.com/questions/1174984/how-to-efficiently-calculate-a-running-standard-deviation to efficiently calculate a running standard deviation I have an array of lists.. ... n 0.01 0.00 0.01 0.05 0.03 What I would like to do is efficiently calculate the mean and standard deviation at each index of a.. ... If you use a numpy array it will do the work for you efficiently from numpy import array nums array 0.01 0.01 0.02 0.04 0.03..
How can I tail a log file in Python? http://stackoverflow.com/questions/12523044/how-can-i-tail-a-log-file-in-python use platform specific tricks e.g. kqueue on BSD to efficiently tail a file forever without needing sleep . Therefore implementing..
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 Does anybody know if and how this could be done more efficiently or is this simply the best possible way to do it python performance..
Python List vs. Array - when to use? http://stackoverflow.com/questions/176011/python-list-vs-array-when-to-use arbitrary data and they can be appended to very efficiently in amortized constant time . If you need to shrink and grow.. time . If you need to shrink and grow your array time efficiently and without hassle they are the way to go. But they use a lot..
Algorithm - How to delete duplicate elements in a list efficiently? http://stackoverflow.com/questions/1801459/algorithm-how-to-delete-duplicate-elements-in-a-list-efficiently How to delete duplicate elements in a list efficiently There is a list L . It contains elements of arbitrary type.. each . How to delete all duplicate elements in such list efficiently ORDER must be preserved Just an algorithm is required so no..
Euclidean distance between points in two different Numpy arrays, not within http://stackoverflow.com/questions/1871536/euclidean-distance-between-points-in-two-different-numpy-arrays-not-within which I can grab an m x p submatrix. Is there a way to efficiently generate this submatrix python numpy euclidean distance share..
Compare two images the python/linux way http://stackoverflow.com/questions/1927660/compare-two-images-the-python-linux-way and so they have a different md5 checksum. How can I efficiently and confidently compare two images in the same sense as a human..
Why does Python print unicode characters when the default encoding is ASCII? http://stackoverflow.com/questions/2596714/why-does-python-print-unicode-characters-when-the-default-encoding-is-ascii that some of them require 3 bytes to be expressed. To work efficiently with text a 1 to 1 mapping would be rather impractical since..
Most efficient way to search the last x lines of a file in python http://stackoverflow.com/questions/260273/most-efficient-way-to-search-the-last-x-lines-of-a-file-in-python of them match a string. I need to do this as quickly and efficiently as possible and was wondering if there's anything better than..
Inverse Distance Weighted (IDW) Interpolation with Python http://stackoverflow.com/questions/3104781/inverse-distance-weighted-idw-interpolation-with-python R in terms of performance.....unless there is a way to efficiently mask out only the points I need. Even with this modification..
Weighted random selection with and without replacement http://stackoverflow.com/questions/352670/weighted-random-selection-with-and-without-replacement sized bins for the weighted list that can be indexed very efficiently through bit operations to avoid a binary search. It will turn..
Using strides for an efficient moving average filter http://stackoverflow.com/questions/4936620/using-strides-for-an-efficient-moving-average-filter I could use them to compute a moving average filter more efficiently than what I proposed in this post using convolution filters..
Searching a list of objects in Python http://stackoverflow.com/questions/598398/searching-a-list-of-objects-in-python contains any element that matches and do it relatively efficiently you can do def contains list filter for x in list if filter..
why is plotting with Matplotlib so slow? http://stackoverflow.com/questions/8955869/why-is-plotting-with-matplotlib-so-slow Both these can be fixed by using blitting. To do blitting efficiently you'll have to use backend specific code. In practice if you're..
Stripping non printable characters from a string in python http://stackoverflow.com/questions/92438/stripping-non-printable-characters-from-a-string-in-python c 'Cc' # or equivalently and much more efficiently control_chars ''.join map unichr range 0 32 range 127 160 control_char_re..
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