Object serialization and deserialization are a routine aspect of any non-trivial Python program. Saving to a file, reading a configuration file, responding to an HTTP request, all involve object serialization and deserialization. Serialization and deserialization involve various schemes, formats and protocols to stream Python objects and to get them back later intact. Serialization schemes, formats or protocols you choose determine how fast your program runs and how secure it is.Lets use a dictionary of python objects to serialize. Class is also a Python object. We use a Python module named pickle and its method pickle.dumps(object).foo = dict(int_list=[3, 4, 5],  text='Hello World', ... Read More

Python is not class-based exclusively - the basic unit of code decomposition in Python is the module. A module is a distinct thing that may have one or two dozen closely-related classes. Modules may as well contain functions along with classes. In Python there is rule of  one module=one file.In Python if you restrict yourself to one class per file (which in Python is not prohibited) you may end up with large number of small files – not easy to keep track.So depending on the scenario and convenience one can have one or more classes per file in Python.Read More

I would recommend generateDS for converting a XSD file to a Python class . In my opinion, it is a good tool for the said purpose.It (generatS) generates the Python class with all methods (setters and getters, export to XML, import from XML). It does a good job and works very well !.

A class can be derived from more than one base classes in Python. This is called multiple inheritance.In multiple inheritance, the features of all the base classes are inherited into the derived class. The syntax for multiple inheritance is similar to single inheritance.class Super1:     pass class Super2:     pass class MultiDerived(Super1, Super2):    passIn the multiple inheritance scenario, any specified attribute is searched first in the current class. If not found, the search continues into parent classes in depth-first, left-right fashion without searching same class twice.So, in the above example of MultiDerived class the search order is ... Read More

There are no 'private variables' in Python classes as such. All variables and methods in Python are public by default. There is sometimes an emulation of private variables by using the double underscore __ prefix to the variable's names. This makes these variables invisible or not easily visible outside of the class that contains them. This is achieved through name mangling. These 'private variables' are not really secure or private because they can be accessed by using certain workaround code. So prefixing the variable names with single underscore _ (semiprivate) and double underscore __ (fully private) makes them difficult to ... Read More

The object-oriented procedural programming, including the ideas of classes and objects, is well supported by Python. It offers a crystal-clear program structure and simple code modification. The code can be reused and offers many benefits of abstractions, encapsulation, and polymorphism due to the class's shareability. A Python class is a "blueprint" for creating objects in Python is a class. Getting Class name of an instance in Python To determine a Python instance's class name there are two ways − Using the type() function and __name__ function. Using the combination of the __class__ and __name__. A unique built-in variable ... Read More

In OOP languages methods are a piece of code that can perform a specific task to produce a desired output. Methods are created inside classes and are invoked or called by objects of the class. Methods are extremely useful in programming as they provide modularity to code by breaking a complex code into manageable blocks. Methods can function independently of other methods, thus making it easy to check individual functionality within a program. Method chaining in Python Methods chaining is a style of programming in which invoking multiple method calls occurs sequentially. It removes the pain of assigning variables at ... Read More

From the Python documentation −Class objects support two kinds of operations: attribute references and instantiation.Attribute references use the standard syntax used for all attribute references in Python: obj.name. Valid attribute names are all the names that were in the class’s namespace when the class object was created. So, if the class definition looked like this −class MyClass: """A simple example class""" i = 12345 def f(self): return 'hello world'then MyClass.i and MyClass.f are valid attribute references, returning an integer and a function object, respectively. Class attributes can also be assigned to, so you can change the value of MyClass.i by ... Read More

A class is a group of items. It is a logical entity with a few unique attributes and methods. For instance, if you have a class for Cricket, it should have an attribute and method like players, tournaments, toss, runs, wickets, matches, etc. Use the keyword ‘class’ to create a class. Example: Following is a simple example of a class − Create the class named ‘Python’ and give it the property a − class Python: a = 36 This article demonstrates the following different ways to dynamically load a Python class. Using getattr() function The named attribute of ... Read More

There is a module name "enum" in python with the hep of which enum is used in python.#import enum import enum # use enum in class class Car(enum.Enum):    suzuki = 1    Hyundai = 2    Dezire = 3 print ("All the enum values are : ") for c in (Car):    print(c)