¡@
python Programming Glossary: expensivehttp://stackoverflow.com/questions/11254384/when-to-commit-data-in-zodb older transactions are removed. Do note that packing is an expensive operation and thus can take a while depending on the size of..
Using the same decorator (with arguments) with functions and methods http://stackoverflow.com/questions/1288498/using-the-same-decorator-with-arguments-with-functions-and-methods is called on all function calls so don't do anything expensive there. Usage of the decorator class Foo object @allowed 'GET'..
why does python's list.append evaluate to false? http://stackoverflow.com/questions/1682567/why-does-pythons-list-append-evaluate-to-false return a usable value when getting it otherwise would be expensive or a mess the pop method is a good example of this pragmatism..
http://stackoverflow.com/questions/2135457/how-to-write-a-wrapper-over-functions-and-member-functions-that-executes-some-co for a simple way to release re acquire the GIL around my expensive C calls without having to manually write thin wrappers like..
Python: Random is barely random at all? http://stackoverflow.com/questions/2145510/python-random-is-barely-random-at-all number applications. Cryptographically secure PRNGs may be expensive perhaps requiring bignum calculations or may not have good geometric..
How Python web frameworks, WSGI and CGI fit together http://stackoverflow.com/questions/219110/how-python-web-frameworks-wsgi-and-cgi-fit-together CGI configuration Recall that forking a subprocess is expensive. There are two ways to work around this. Embedded mod_wsgi or..
Python subprocess: callback when cmd exits http://stackoverflow.com/questions/2581817/python-subprocess-callback-when-cmd-exits easy in Python but note that if onExit is computationally expensive you'll want to put this in a separate process instead using..
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 the next round of data but this is potentially extremely expensive. I was wondering if anyone had a good solution to this for lists..
Improving pure Python prime sieve by recurrence formula http://stackoverflow.com/questions/3285443/improving-pure-python-prime-sieve-by-recurrence-formula length. len of the same subsequence is too slow as len is expensive and generating the subsequence is expensive. This looks to slightly.. slow as len is expensive and generating the subsequence is expensive. This looks to slightly speed up the function but I could not..
Understanding __get__ and __set__ and Python descriptors. http://stackoverflow.com/questions/3798835/understanding-get-and-set-and-python-descriptors it. That way if the descriptor is used to cache some expensive operation for example it could store the value on itself and..
numpy: access an array by column http://stackoverflow.com/questions/4455076/numpy-access-an-array-by-column i access the ith column eg 1 3 5 . also would this be an expensive operation python numpy share improve this question test..
Try/catch or validation for speed? http://stackoverflow.com/questions/5589532/try-catch-or-validation-for-speed then EAFP is close to free however it is comparatively expensive if an exception occurs as there is quite a lot of processing.. which of the two is easier to read. Is the pre check more expensive than the cost of raising and catching an exception If yes then.. whichever you consider easier to read if the pre check is expensive use EAFP if you expect the operation to succeed most of the..
Is it Pythonic to use list comprehensions for just side effects? http://stackoverflow.com/questions/5753597/is-it-pythonic-to-use-list-comprehensions-for-just-side-effects
Why is it “Easier to ask forgiveness than permission” in python, but not in Java? [closed] http://stackoverflow.com/questions/6092992/why-is-it-easier-to-ask-forgiveness-than-permission-in-python-but-not-in-java on in Java is that instantiating exception objects is expensive. This is largely because the default behaviour of an exception.. a syscall and the sum of the extra syscalls is probably as expensive as the exceptions that they are trying to avoid ... especially..
Is there a decorator to simply cache function return values? http://stackoverflow.com/questions/815110/is-there-a-decorator-to-simply-cache-function-return-values @property def name self if not hasattr self '_name' # expensive calculation self._name 1 1 return self._name I'm new but I think..
Why is reading lines from stdin much slower in C++ than Python? http://stackoverflow.com/questions/9371238/why-is-reading-lines-from-stdin-much-slower-in-c-than-python the number of system calls which are typically relatively expensive. However since the FILE based stdio and iostreams often have..
|