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How to find out the number of CPUs using python
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If you have python with a version >= 2.6 you can simply use
import multiprocessing
multiprocessing.cpu_count()
http://docs.python.org/library/multiprocessing.html#multiprocessing.cpu_count
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Is there a way to detect if an image is blurry?
I was wondering if there is a way to determine if an image is blurry or not by analyzing the image data.
12 Answers
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How to check if element in groovy array/hash/collection/list?
How do I figure out if an array contains an element?
I thought there might be something like [1, 2, 3].includes(1) which would evaluate as true .
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How can I split a string into segments of n characters?
...d".match(/.{1,3}/g)); // ["abc", "d"]
A couple more subtleties:
If your string may contain newlines (which you want to count as a character rather than splitting the string), then the . won't capture those. Use /[\s\S]{1,3}/ instead. (Thanks @Mike).
If your string is empty, then match() w...
How to read keyboard-input?
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try
raw_input('Enter your input:') # If you use Python 2
input('Enter your input:') # If you use Python 3
and if you want to have a numeric value
just convert it:
try:
mode=int(raw_input('Input:'))
except ValueError:
print "Not a number"
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Python dictionary: Get list of values for list of keys
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If mydict is a function call (that returns a dict) then this calls the function multiple times, right?
– endolith
Sep 30 '18 at 3:09
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Multiple Updates in MySQL
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If there is no duplicates then i dont want that row to be inserted. what should id do? because i am fetching information from another site which maintains tables with id's. I am inserting values with respect to that id. if th...
Find the most frequent number in a numpy vector
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If your list contains all non-negative ints, you should take a look at numpy.bincounts:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.bincount.html
and then probably use np.argmax:
a = np.array([1,2,3,1,2,1,1,1,3,...
Is there a better way of writing v = (v == 0 ? 1 : 0); [closed]
I want to toggle a variable between 0 and 1. If it's 0 I want to set it to 1, else if it's 1 I want to set it to 0.
31 Answ...
Base64 length calculation?
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Consider if you have one byte of input. That will produce four characters of output. But only two output characters are needed to encode the input. So two characters will be padding.
– David Schwartz
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