Define A Decorator Function Bold Tag

Define a decorator function bold tag which adds bold html tags b b to return the value of some other function mport sys import os define and implement bold tag def bold tag func.

Define a decorator function bold tag. Python decorator are the function that receive a function as an argument and return another function as return value. Decorators can be a bit mind bending when first encountered and they can also be a bit tricky to debug. Decorators allow us to wrap another function in order to extend the behavior of wrapped function without permanently modifying it.

Functions can be defined inside another function and can also be passed as argument to another function. The assumption for a decorator is that we will pass a function as argument and the signature of the inner function in the decorator must match the function to decorate. For example given the decorator sealed we might write the sealed function as follows.

Return msg say bold tag say check the tail section for input output. Tips and notes note. Putting the ideas mentioned above together we can build a decorator.

This sounds confusing but it s really not especially after you ve seen a few examples of how decorators work. According to the html5 specification the b tag should be used as a last resort when no other tag is more appropriate. Decorators provide a simple syntax for calling higher order functions.

By definition a decorator is a function that takes another function and extends the behavior of the latter function without explicitly modifying it. Return b func args kwdargs b return inner def say msg. Decorators are very powerful and useful tool in python since it allows programmers to modify the behavior of function or class.

Generally we decorate a function and reassign it as ordinary make pretty ordinary. But they are a neat way to add functionality to functions and classes. A decorator is a special kind of declaration that can be attached to a class declaration method accessor property or parameter decorators use the form expression where expression must evaluate to a function that will be called at runtime with information about the decorated declaration.