Practical Metaprogramming in Python
Introduction
At first word Metaprogramming seems very funky and alien thing but if you have ever worked with decorators or metaclasses, your were doing metaprogramming there. In nutshell we can say metaprogramming is the code which manipulates code.
What we are going to learn?
- General OOPS concepts in Python
- Descriptors
- Metaclasses
- Decorators
- Generators
- Data Classes
General OOPS concepts in Python
Descriptors
Metaclasses
A metaclass is the class of a class. A class defines how an instance of the class (i.e. an object) behaves while a metaclass defines how a class behaves. A class is an instance of a metaclass.
Decorators
Decorators
A decorator is a function that creates a wrapper around another function
from functools import wraps
def debug(func):
msg = func.__qualname__
@wraps(func)
def wrapper(*args, **kwargs):
print(msg)
return func(*args, **kwargs)
return wrapper
@debug
def add(a, b):
print(a+b)
add(1, 2)https://repl.it/@bhansa/metaprogdecorators