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python Programming Glossary: equalWhy is if not someobj: better than if someobj == None: in Python? http://stackoverflow.com/questions/100732/why-is-if-not-someobj-better-than-if-someobj-none-in-python directly used or an int value that is considered False if equal to zero. Otherwise if the object has a __len__ special method.. False . In the second test the object is compared for equality to None . Here we are asking the object Are you equal to.. equality to None . Here we are asking the object Are you equal to this other value This is done using the following algorithm..
http://stackoverflow.com/questions/1035340/reading-binary-file-in-python with byte. byte f.read 1 Or as benhoyt says skip the not equal and take advantage of the fact that b evaluates to false. This..
Is there a difference between `==` and `is` in python? http://stackoverflow.com/questions/132988/is-there-a-difference-between-and-is-in-python 'Yay ' # Test two. if n is 5 print 'Yay ' two tests for equality equivalent ha Does this hold true for objects where you would.. object if the objects referred to by the variables are equal. a 1 2 3 b a b is a True b a True b a b is a False b a True..
How can I quantify difference between two images? http://stackoverflow.com/questions/189943/how-can-i-quantify-difference-between-two-images absolute values or zero norm the number of elements not equal to zero to measure how much the image has changed. The former..
Simple Python Challenge: Fastest Bitwise XOR on Data Buffers http://stackoverflow.com/questions/2119761/simple-python-challenge-fastest-bitwise-xor-on-data-buffers on Data Buffers Challenge Perform a bitwise XOR on two equal sized buffers. The buffers will be required to be the python..
http://stackoverflow.com/questions/212358/binary-search-in-python and then checking if the item at that position is equal to what I'm searching but that seems cumbersome and I also need..
when does Python allocate new memory for identical strings? http://stackoverflow.com/questions/2123925/when-does-python-allocate-new-memory-for-identical-strings as strings either making a new one or finding an existing equal one and using one more reference to it are just fine from the..
How to sort alpha numeric set in python http://stackoverflow.com/questions/2669059/how-to-sort-alpha-numeric-set-in-python 3 Will sort on the string part if the quantities are equal If you want printed output exactly as described in your example..
Is False == 0 and True == 1 in Python an implementation detail or is it guaranteed by the language? http://stackoverflow.com/questions/2764017/is-false-0-and-true-1-in-python-an-implementation-detail-or-is-it-guarante Python 3.x True and False are keywords and will always be equal to 1 and 0 . Under normal circumstances in Python 2 and always..
How do you split a list into evenly sized chunks in Python? http://stackoverflow.com/questions/312443/how-do-you-split-a-list-into-evenly-sized-chunks-in-python a list of arbitrary length and I need to split it up into equal size chunks and operate on it. There are some obvious ways to..
Weighted random selection with and without replacement http://stackoverflow.com/questions/352670/weighted-random-selection-with-and-without-replacement method. The core intuition is that we can create a set of equal sized bins for the weighted list that can be indexed very efficiently.. a single percentage. Let's us take the example of five equally weighted choices a 1 b 1 c 1 d 1 e 1 To create the alias lookup.. each weight. Find the smallest power of 2 greater than or equal to the number of variables and create this number of partitions..
What does `if __name__ == “__main__”:` do? http://stackoverflow.com/questions/419163/what-does-if-name-main-do will then read the if statement and see that __name__ does equal __main__ so it will execute the block shown there. One of the..
Javascript equivalent of Python's zip function http://stackoverflow.com/questions/4856717/javascript-equivalent-of-pythons-zip-function of Python's zip function That is given two arrays of equal lengths create an array of pairs. javascript python functional.. arrays 0 .map ... The above assumes that the arrays are of equal size as they should be. It also assumes you pass in a single.. zip behavior on edge cases where the arrays are not of equal size silently pretending the longer parts of arrays don't exist..
How to write the Fibonacci Sequence in Python http://stackoverflow.com/questions/494594/how-to-write-the-fibonacci-sequence-in-python is 0 the second number is 1 and each subsequent number is equal to the sum of the previous two numbers of the sequence itself..
How can you print a variable name in python? [duplicate] http://stackoverflow.com/questions/592746/how-can-you-print-a-variable-name-in-python python duplicate Say I have a variable named choice it is equal to 2. How would I access the name of the variable Something..
What is the most efficient way of finding all the factors of a number in Python? http://stackoverflow.com/questions/6800193/what-is-the-most-efficient-way-of-finding-all-the-factors-of-a-number-in-python This means that one of the two will always be less than or equal to sqrt x so you only have to search up to that point to find..
Good Python modules for fuzzy string comparison? http://stackoverflow.com/questions/682367/good-python-modules-for-fuzzy-string-comparison The similarity is a number between 0 and 1 it's usually equal or somewhat higher than difflib.SequenceMatcher.ratio becuase..
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