python Programming Glossary: references
Python list doesn't reflect variable change http://stackoverflow.com/questions/12080552/python-list-doesnt-reflect-variable-change share improve this question Python variables hold references to values . Thus when you define the palin list you pass in..
Python: Get object by id http://stackoverflow.com/questions/1396668/python-get-object-by-id module Edited The Python weakref module lets you keep references dictionary references and proxies to objects without having.. Python weakref module lets you keep references dictionary references and proxies to objects without having those references count.. references and proxies to objects without having those references count in the reference counter. They're like symbolic links...
How to install MySQLdb (Python data access library to MySQL) on Mac OS X? http://stackoverflow.com/questions/1448429/how-to-install-mysqldb-python-data-access-library-to-mysql-on-mac-os-x and the universe according to google includes numerous references to what a PITA it is and an inordinate number of guides that..
Image comparison algorithm http://stackoverflow.com/questions/1819124/image-comparison-algorithm there to still earlier questions which have even more references and good answers. Here's an implementation using some of the..
Python list problem http://stackoverflow.com/questions/1959744/python-list-problem on elements of a list you are reproducing the references. See the section List creation shortcuts on the Python Programming.. wikibook which goes into detail on the issues with list references to mutable objects. Their recommended workaround is a list comprehension..
Why do attribute references act like this with Python inheritance? http://stackoverflow.com/questions/206734/why-do-attribute-references-act-like-this-with-python-inheritance do attribute references act like this with Python inheritance The following seems strange....
when does Python allocate new memory for identical strings? http://stackoverflow.com/questions/2123925/when-does-python-allocate-new-memory-for-identical-strings possible duplicates to reuse a single object via multiple references when reading data from a file it just doesn't seem to be a promising..
Unexpected feature in a Python list of lists http://stackoverflow.com/questions/240178/unexpected-feature-in-a-python-list-of-lists you get essentially the list x x x . That is a list with 3 references to x . When you then change x all three references are changed... with 3 references to x . When you then change x all three references are changed. To fix it you need to make sure that you create..
Printing all instances of a class http://stackoverflow.com/questions/328851/printing-all-instances-of-a-class for r in X.get_instances print r.name In this case all the references get stored as a weak reference in a list. If you create and..
How do I unload (reload) a Python module? http://stackoverflow.com/questions/437589/how-do-i-unload-reload-a-python-module are updated to point to any new or changed objects. Other references to the old objects such as names external to the module are..
How can I make an EXE file from a Python program? [duplicate] http://stackoverflow.com/questions/49146/how-can-i-make-an-exe-file-from-a-python-program base your answers on personal experience and provide references where necessary. python windows executable exe share improve..
Python regex find all overlapping matches? http://stackoverflow.com/questions/5616822/python-regex-find-all-overlapping-matches 6789123456 7891234567 8912345678 9123456789 I've found references to a lookahead but the examples I've seen only show pairs of..
How do you reload a Django model module using the interactive interpreter via “manage.py shell”? http://stackoverflow.com/questions/890924/how-do-you-reload-a-django-model-module-using-the-interactive-interpreter-via-m importing the module using different syntax deleting all references to any Poll objects or to the Poll class. I've also tried this..
Circular dependency in Python http://stackoverflow.com/questions/894864/circular-dependency-in-python However as of today I created a new method for Node that references the Path object. I had problems when trying to import path.py..
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 for his answer Any elaboration people can make or good references people can point to as to why this sync happens what it means..
Seeking clarification on apparent contradictions regarding weakly typed languages http://stackoverflow.com/questions/9929585/seeking-clarification-on-apparent-contradictions-regarding-weakly-typed-language strongly typed at the same time Thanks in advance for any references use cases or examples that you provide that can lead me into..
Import Error. Circular References http://stackoverflow.com/questions/11028711/import-error-circular-references Error. Circular References I have a package like this package __init__.py subpackage1..
Creating dynamically named variables from user input http://stackoverflow.com/questions/11354214/creating-dynamically-named-variables-from-user-input Love and enjoy..and maybe hug and kiss your dictionary. References How can you dynamically create variables in Python via to a..
Separation of business logic and data access in django http://stackoverflow.com/questions/12578908/separation-of-business-logic-and-data-access-in-django manage database models You should extract a command. Some References Django documentation proxy models Django documentation signals..
Installing a django site on GoDaddy http://stackoverflow.com/questions/12658427/installing-a-django-site-on-godaddy rule just ensures all traffic goes through Django. References Django with FastCGI Start of Django Tutorials VirtualEnv share..
Why python finds module instead of package if they have the same name? http://stackoverflow.com/questions/14183541/why-python-finds-module-instead-of-package-if-they-have-the-same-name modules.html#intra package references 6.4.2. Intra package References The submodules often need to refer to each other. For example..
Why XGrabKey generates extra focus-out and focus-in events? http://stackoverflow.com/questions/15270420/why-xgrabkey-generates-extra-focus-out-and-focus-in-events it to the original window just as XGrabKey can do it . References ...XGrabKey will steal focus... https bugs.launchpad.net gtkhotkey..
How to access url hash/fragment from a Django Request object http://stackoverflow.com/questions/2181186/how-to-access-url-hash-fragment-from-a-django-request-object This is not sent to the server by definition. From URI References Fragment Identifiers on URIs The HTTP engine cannot make any..
How to flush output of Python print? [duplicate] http://stackoverflow.com/questions/230751/how-to-flush-output-of-python-print sys sys.stdout.flush print by default prints to sys.stdout References http docs.python.org reference simple_stmts.html#the print statement..
Phase correlation http://stackoverflow.com/questions/2831527/phase-correlation Scaling deviation in the X Axis from the original Image. References http etd.lsu.edu docs available etd 07072005 113808 unrestricted..
How to replicate tee behavior in python when using subprocess? http://stackoverflow.com/questions/2996887/how-to-replicate-tee-behavior-in-python-when-using-subprocess wait for it to finish. Python 3 compatible code important References Here are some incomplete solutions I found so far http devlishgenius.blogspot.com..
Why doesn't finite repetition in lookbehind work in some flavors?p http://stackoverflow.com/questions/3159524/why-doesnt-finite-repetition-in-lookbehind-work-in-some-flavorsp length only Java finite length only .NET no restriction References regular expressions.info Flavor comparison Python In Python.. 2 ' # raise error look behind requires fixed width pattern References regular expressions.info Lookarounds Character classes Alternation..
Monitoring a displays state in python? http://stackoverflow.com/questions/328490/monitoring-a-displays-state-in-python I hope however they point you in the right direction. References The Old New Thing Fumbling around in the dark and stumbling..
How do libraries in different programming languages handle Date & Time, Timestamps & Durations, Leapseconds & -years, DSTs & Timezones, …? http://stackoverflow.com/questions/3709870/how-do-libraries-in-different-programming-languages-handle-date-time-timestam Databases JodaTime Legacy JDK classes java.util. XML References https jsr 310.dev.java.net nonav doc 2010 06 22 index.html JavaZone..
Python pyc files (main file not compiled?) http://stackoverflow.com/questions/3878479/python-pyc-files-main-file-not-compiled or the main file. Hence it is not byte compiled at all. References http effbot.org zone python compile.htm http www.network theory.co.uk..
Calculating Pearson correlation and significance in Python http://stackoverflow.com/questions/3949226/calculating-pearson-correlation-and-significance-in-python Returns Pearson's correlation coefficient 2 tailed p value References http www.statsoft.com textbook glosp.html#Pearson 20Correlation..
Why doesn't memory get released to system after large queries (or series of queries) in django? http://stackoverflow.com/questions/5494178/why-doesnt-memory-get-released-to-system-after-large-queries-or-series-of-quer a lot of smaller lists seq1 for x in range 10 6 # References all the new lists seq2 seq1 10 # Grab a second reference to..
Fitting empirical distribution to theoretical ones with Scipy (Python)? http://stackoverflow.com/questions/6620471/fitting-empirical-distribution-to-theoretical-ones-with-scipy-python plt.xlim 0 47 plt.legend loc 'upper right' plt.show References Fitting distributions goodness of fit p value. Is it possible..
unbuffered stdout in python (as in python -u) from within the program [duplicate] http://stackoverflow.com/questions/881696/unbuffered-stdout-in-python-as-in-python-u-from-within-the-program it would be much easier sys.stdout open ' ' 'w' 0 References http docs.python.org library stdtypes.html#file objects http..
Why is the same SQLite query being 30 times slower when fetching only twice as many results? http://stackoverflow.com/questions/10531898/why-is-the-same-sqlite-query-being-30-times-slower-when-fetching-only-twice-as-m `fk_feature_msrun1` FOREIGN KEY `msrun_msrun_id` REFERENCES `msrun` `msrun_id` ON DELETE NO ACTION ON UPDATE NO ACTION CREATE.. `fk_spectrum_msrun1` FOREIGN KEY `msrun_msrun_id` REFERENCES `msrun` `msrun_id` ON DELETE NO ACTION ON UPDATE NO ACTION CREATE.. FOREIGN KEY `MSMS_precursor_precursor_id` REFERENCES `MSMS_precursor` `precursor_id` ON DELETE NO ACTION ON UPDATE..
Complex foreign key constraint in SQLAlchemy http://stackoverflow.com/questions/8394177/complex-foreign-key-constraint-in-sqlalchemy integer PRIMARY KEY option text variable_id integer REFERENCES systemvariables variable_id ON UPDATE CASCADE ON DELETE CASCADE.. FOREIGN KEY choice_id variable_id REFERENCES variableoptions option_id variable_id INSERT INTO variableoptions.. PRIMARY KEY option text variable_id integer NOT NULL REFERENCES systemvariables variable_id ON UPDATE CASCADE ON DELETE CASCADE..
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