python Programming Glossary: abstract
Iterating through a range of dates in Python http://stackoverflow.com/questions/1060279/iterating-through-a-range-of-dates-in-python solution is using a generator function to completely hide abstract the iteration over the range of dates def daterange start_date..
Using python's eval() vs. ast.literal_eval()? http://stackoverflow.com/questions/15197673/using-pythons-eval-vs-ast-literal-eval module's .literal_eval the only safe option python eval abstract syntax tree share improve this question datamap eval raw_input..
Good PDF report generator tool for Python http://stackoverflow.com/questions/177799/good-pdf-report-generator-tool-for-python it with your data in a simple and flexible way. Very abstract and of course just a few lines of code. You can generate ODT..
In Python, how do I determine if an object is iterable? http://stackoverflow.com/questions/1952464/in-python-how-do-i-determine-if-an-object-is-iterable 'is not iterable' The collections module provides some abstract base classes which allow to ask classes or instances if they..
Update value of a nested dictionary of varying depth http://stackoverflow.com/questions/3232943/update-value-of-a-nested-dictionary-of-varying-depth job faster and cleaner and isinstance is best applied to abstract base classes not concrete ones for generality. share improve..
Compiled vs. Interpreted Languages http://stackoverflow.com/questions/3265357/compiled-vs-interpreted-languages a lot of explanations online but they tend towards the abstract differences rather than the practical implications. Most of..
What kinds of patterns could I enforce on the code to make it easier to translate to another programming language? http://stackoverflow.com/questions/3455456/what-kinds-of-patterns-could-i-enforce-on-the-code-to-make-it-easier-to-translat code than how to do the translation. php python compiler abstract syntax tree language translator share improve this question..
Checking whether a variable is an integer or not http://stackoverflow.com/questions/3501382/checking-whether-a-variable-is-an-integer-or-not ... This mentality is slowly being overtaken by the use of abstract base classes which let you register exactly what properties..
How do you return multiple values in Python? http://stackoverflow.com/questions/354883/how-do-you-return-multiple-values-in-python y2 edit Just to be clear y0 y1 and y2 are just meant as abstract identifiers. As pointed out in practice you'd use meaningful..
UnicodeDecodeError when redirecting to file http://stackoverflow.com/questions/4545661/unicodedecodeerror-when-redirecting-to-file On the other hand computers do need to represent abstract characters in some way they use arrays of bytes numbers between..
Class factory in Python http://stackoverflow.com/questions/456672/class-factory-in-python determine which registrar to load One option is to have an abstract base Registrar class which concrete implementations subclass..
Detect File Change Without Polling http://stackoverflow.com/questions/5738442/detect-file-change-without-polling an implementation on top of them offering a generic and abstract way to manipulate those functionalities. Thus it is obviously..
Equation parsing in Python http://stackoverflow.com/questions/594266/equation-parsing-in-python compiler eq sin x x 2 ast compiler.parse eq You get an abstract syntax tree that you can work with. share improve this answer..
Using MultipartPostHandler to POST form-data with Python http://stackoverflow.com/questions/680305/using-multipartposthandler-to-post-form-data-with-python httplib solution to this I linked to it above . I'd rather abstract away the problem and use a minimal amount of code to continue..
Split string by count of characters http://stackoverflow.com/questions/7111068/split-string-by-count-of-characters to iterate in an unusual way a generator is a good way to abstract that def chunks s n Produce `n` character chunks from `s`. for..
Django dynamic model fields http://stackoverflow.com/questions/7933596/django-dynamic-model-fields name models.CharField max_length 64 class Meta abstract True class CustomDataValue models.Model Abstract specification.. data. value models.CharField max_length 1024 class Meta abstract True Note how CustomDataField has a ForeignKey to Site each..
How do I access the child classes of an object in django without knowing the name of the child class? http://stackoverflow.com/questions/929029/how-do-i-access-the-child-classes-of-an-object-in-django-without-knowing-the-nam import models class InheritanceCastModel models.Model An abstract base class that provides a ``real_type`` FK to ContentType... pk self.pk class Meta abstract True This is implemented as an abstract base class to make it.. self.pk class Meta abstract True This is implemented as an abstract base class to make it reusable you could also put these methods..
Calling Python from Objective-C http://stackoverflow.com/questions/1308079/calling-python-from-objective-c that creates concrete subclass instances I.e. @interface Abstract NSObject unsigned int foo NSString aBar newConcrete @end @implementation.. int foo NSString aBar newConcrete @end @implementation Abstract unsigned int foo NSString aBar return 42 newConcrete return.. @ MyConcrete new autorelease @end ..... class Concrete Abstract def foo_ self s return s.length ..... x Abstract newFoo x foo..
Good graph traversal algorithm http://stackoverflow.com/questions/1320688/good-graph-traversal-algorithm graph traversal algorithm Abstract problem I have a graph of about 250 000 nodes and the average..
Differences between isinstance() and type() in python http://stackoverflow.com/questions/1549801/differences-between-isinstance-and-type-in-python return treatasscalar x You could say that basestring is an Abstract Base Class ABC it offers no concrete functionality to subclasses..
Rules of thumb for when to use operator overloading in python http://stackoverflow.com/questions/1552260/rules-of-thumb-for-when-to-use-operator-overloading-in-python when you're making a new class that falls into an existing Abstract Base Class ABC indeed many of the ABCs in standard library module..
Whats the difference between using {{STATIC_URL}} and {% static %} http://stackoverflow.com/questions/18400315/whats-the-difference-between-using-static-url-and-static the other. python django share improve this question Abstract The static template tag is aware of your STATICFILES_STORAGE..
How to write the Visitor Pattern for Abstract Syntax Tree in Python? http://stackoverflow.com/questions/2525677/how-to-write-the-visitor-pattern-for-abstract-syntax-tree-in-python to write the Visitor Pattern for Abstract Syntax Tree in Python My collegue suggested me to write a visitor..
Django Abstract Models vs simple Python mixins vs Python ABCs http://stackoverflow.com/questions/3263417/django-abstract-models-vs-simple-python-mixins-vs-python-abcs Abstract Models vs simple Python mixins vs Python ABCs This is a question.. prompted by another question from me. Django provides Abstract base classes functionality which are not to same as ABC classes.. solve it this way Why the need for this special kind of 'Abstract base class' Model Why not make a Model mixin by just inheriting..
Python: How to “perfectly” override a dict http://stackoverflow.com/questions/3387691/python-how-to-perfectly-override-a-dict an object that behaves like a dict quite easily with ABC s Abstract Base Classes from the collections module. It even tells you..
What kinds of patterns could I enforce on the code to make it easier to translate to another programming language? http://stackoverflow.com/questions/3455456/what-kinds-of-patterns-could-i-enforce-on-the-code-to-make-it-easier-to-translat of Python's parser module which lets me fiddle with the Abstract Syntax Tree. Apparently the closest I can get with PHP is token_get_all..
Practical example of Polymorphism http://stackoverflow.com/questions/3724110/practical-example-of-polymorphism # Constructor of the class self.name name def talk self # Abstract method defined by convention only raise NotImplementedError..
Polymorphism in Python http://stackoverflow.com/questions/3964929/polymorphism-in-python Exception '...' def __read self raise NotImplementedError 'Abstract method' class FileA File def __read self pass file FileA 'myfile.a'.. self pass file FileA 'myfile.a' # NotImplementedError Abstract method My question what's wrong How I can fix my code to FileA..
Abstract methods in Python http://stackoverflow.com/questions/4382945/abstract-methods-in-python methods in Python I am having trouble in using inheritance..
High precision arithmetric in Python and/or C/C++? http://stackoverflow.com/questions/4773603/high-precision-arithmetric-in-python-and-or-c-c precision arithmetric in Python and or C C Abstract Which Python package or C Library is the best option for very..
Django dynamic model fields http://stackoverflow.com/questions/7933596/django-dynamic-model-fields the following solution class CustomDataField models.Model Abstract specification for arbitrary data fields. Not used for holding.. Meta abstract True class CustomDataValue models.Model Abstract specification for arbitrary data. value models.CharField max_length..
OOP: good class design http://stackoverflow.com/questions/845966/oop-good-class-design the compiler module I've parsed the source code into an Abstract Source Tree and I've walked it to collect dependencies between.. belong to clients. The Dependency Inversion Principle Abstractions should not depend on details. Details should depend on abstractions...
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