¡@

Home 

python Programming Glossary: lookup

What does python sys.intern do, and when should it be used?

http://stackoverflow.com/questions/1136826/what-does-python-sys-intern-do-and-when-should-it-be-used

is useful to gain a little performance on dictionary lookup if the keys in a dictionary are interned and the lookup key.. lookup if the keys in a dictionary are interned and the lookup key is interned the key comparisons after hashing can be done..

Can't pickle <type 'instancemethod'> when using python's multiprocessing Pool.map()

http://stackoverflow.com/questions/1816958/cant-pickle-type-instancemethod-when-using-pythons-multiprocessing-pool-ma

PicklingError Can't pickle type 'instancemethod' attribute lookup __builtin__.instancemethod failed This occurs when the following..

Python's standard library - is there a module for balanced binary tree?

http://stackoverflow.com/questions/2298165/pythons-standard-library-is-there-a-module-for-balanced-binary-tree

and dicts are implemented as hash tables which have O 1 lookup. The solution to most problems in Python really is use a dict..

__getattr__ on a module

http://stackoverflow.com/questions/2447353/getattr-on-a-module

method on it with the same name as failed in the attribute lookup on the module. class A object def salutation self accusative..

Inverse dictionary lookup - Python

http://stackoverflow.com/questions/2568673/inverse-dictionary-lookup-python

dictionary lookup Python is there any straight forward way of finding a key by..

Best way to strip punctuation from a string in Python

http://stackoverflow.com/questions/265960/best-way-to-strip-punctuation-from-a-string-in-python

it's performing raw string operations in C with a lookup table there's not much that will beat that bar writing your..

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 directly in a local argument meaning it has the fastest lookup possible. UPDATE The python version seems to matter here. I.. variant so it doesn't have to go through the overhead of lookup that the math.sqrt variant does. But I might be wrong Python..

How are Python's Built In Dictionaries Implemented

http://stackoverflow.com/questions/327311/how-are-pythons-built-in-dictionaries-implemented

block of memory sort of like an array so you can do O 1 lookup by index . Each slot in the table can store one and only one.. first empty slot is found. The same thing happens for lookups just starts with the initial slot i where i depends on the.. resized if it is two thirds full. This avoids slowing down lookups. see dictobject.h 64 65 NOTE I did the research on Python Dict..

Multiprocessing: using Pool.map on a function defined in a class

http://stackoverflow.com/questions/3288595/multiprocessing-using-pool-map-on-a-function-defined-in-a-class

task PicklingError Can't pickle type 'function' attribute lookup __builtin__.function failed I've seen a post from Alex Martelli..

Weighted random selection with and without replacement

http://stackoverflow.com/questions/352670/weighted-random-selection-with-and-without-replacement

weighted choices a 1 b 1 c 1 d 1 e 1 To create the alias lookup Normalize the weights such that they sum to 1. a 0.2 b 0.2 c..

Is it worth using Python's re.compile?

http://stackoverflow.com/questions/452104/is-it-worth-using-pythons-re-compile

at all only the time it takes to check the cache a key lookup on an internal dict type . From module re.py comments are mine..

Class factory in Python

http://stackoverflow.com/questions/456672/class-factory-in-python

Object def __init__ self domain self.domain domain def lookup self ... def register self info ... and class RegistrarB object.. object def __init__ self domain self.domain domain def lookup self ... def register self info ... I would like to create a.. extension e.g. com Domain 'test.com' #load RegistrarA com.lookup biz Domain 'test.biz' #load RegistrarB biz.lookup I know this..

What is monkey patch?

http://stackoverflow.com/questions/5626193/what-is-monkey-patch

that has a method get_data . This method does an external lookup on a database or web API for example and various other methods..

Python multiprocessing: sharing a large read-only object between processes?

http://stackoverflow.com/questions/659865/python-multiprocessing-sharing-a-large-read-only-object-between-processes

for line in file filename if line.split ' ' 0 in big_lookup_object # something here if __name__ '__main__' big_lookup_object.. # something here if __name__ '__main__' big_lookup_object marshal.load 'file.bin' pool Pool processes 4 print pool.map.. own copy of the big object Update to clarify further big_lookup_object is a shared lookup object. I don't need to split that..

Performing a getattr() style lookup in a django template

http://stackoverflow.com/questions/844746/performing-a-getattr-style-lookup-in-a-django-template

a getattr style lookup in a django template Python's getattr method is useful when.. tag or non built in tag that can perform dynamic attribute lookups python django django templates share improve this question.. then tries to do a dictionary look up then tries a getitem lookup for lists to work then follows standard Django template behavior..