What are meta classes in Python?

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Khushi Singh · Answer

In Python, metaclasses are specific classes that control the behavior of other classes. A metaclass manages the existence of other classes by defining their creation process and structure. Metaclasses also determine class interpretation.
How Metaclasses Work
The interpreter employs a metaclass to build new classes in Python programming. The built-in type forms the Python
metaclass and thus enables a type to serve as both a type checker and a class creator.
Creating a Metaclass
To build a custom metaclass, programmers need to subclass type. The key way to modify a
metaclass involves extending either the __new__ or 
__init__ functions.
class CustomMeta(type):
   def __new__(cls, name, bases, dct):
       print(f"Creating class: {name}")
       return super().__new__(cls, name, bases, dct)
class MyClass(metaclass=CustomMeta):
   pass
Use Cases of Metaclasses
Programming metaclasses automatically modify class attributes and apply naming standard rules during enforcement.Metaclasses implement the Singleton Pattern to authorize a single instance of any class.Automatic Method Registration enables systems that require automatic registration of specific methods.
Advanced features belong to metaclasses, which primarily serve to control the creation of classes at runtime. Custom metaclasses serve powerful purposes in
Python development especially during complex framework and API design but standard programs typically function without them.
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What are meta classes in Python?

Ashutosh Kumar Verma

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