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2. Class (computer programming) - Wikipedia

   en.wikipedia.org/wiki/Class_(computer_programming)

   In object-oriented programming, a class defines the shared aspects of objects created from the class. The capabilities of a class differ between programming languages , but generally the shared aspects consist of state ( variables ) and behavior ( methods ) that are each either associated with a particular object or with all objects of that class.

3. Python syntax and semantics - Wikipedia

   en.wikipedia.org/wiki/Python_syntax_and_semantics

   Python supports most object oriented programming (OOP) techniques. It allows polymorphism, not only within a class hierarchy but also by duck typing. Any object can be used for any type, and it will work so long as it has the proper methods and attributes. And everything in Python is an object, including classes, functions, numbers and modules.

4. Python (programming language) - Wikipedia

   en.wikipedia.org/wiki/Python_(programming_language)

   Python allows programmers to define their own types using classes, most often used for object-oriented programming. New instances of classes are constructed by calling the class (for example, SpamClass () or EggsClass () ), and the classes are instances of the metaclass type (itself an instance of itself), allowing metaprogramming and reflection .

5. Object-oriented programming - Wikipedia

   en.wikipedia.org/wiki/Object-oriented_programming

   Many of the most widely used programming languages (such as C++, Java, [4] and Python) are multi-paradigm and support object-oriented programming to a greater or lesser degree, typically in combination with imperative programming and declarative programming.

6. List of programming languages by type - Wikipedia

   en.wikipedia.org/wiki/List_of_programming...

   Declarative programming stands in contrast to imperative programming via imperative programming languages, where control flow is specified by serial orders (imperatives). (Pure) functional and logic-based programming languages are also declarative, and constitute the major subcategories of the declarative category. This section lists additional ...

7. Singleton pattern - Wikipedia

   en.wikipedia.org/wiki/Singleton_pattern

   In object-oriented programming, the singleton pattern is a software design pattern that restricts the instantiation of a class to a singular instance. It is one of the well-known "Gang of Four" design patterns , which describe how to solve recurring problems in object-oriented software. [ 1 ]

8. Comparison of programming languages (object-oriented ...

   en.wikipedia.org/wiki/Comparison_of_programming...

   This comparison of programming languages compares how object-oriented programming languages such as C++, Java, Smalltalk, Object Pascal, Perl, Python, and others manipulate data structures. Object construction and destruction

9. First-class citizen - Wikipedia

   en.wikipedia.org/wiki/First-class_citizen

   In a given programming language design, a first-class citizen [a] is an entity which supports all the operations generally available to other entities. These operations typically include being passed as an argument , returned from a function , and assigned to a variable .