Define A Decorator Function Bold Tag

Decorators can be a bit mind bending when first encountered and they can also be a bit tricky to debug.

Define a decorator function bold tag. Function decorators are simply wrappers to existing functions. 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. According to the html5 specification the b tag should be used as a last resort when no other tag is more appropriate.

The b tag specifies bold text without any extra importance. Putting the ideas mentioned above together we can build a decorator. 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.

By definition a decorator is a function that takes another function and extends the behavior of the latter function without explicitly modifying it. Generally we decorate a function and reassign it as ordinary make pretty ordinary. Functions can be defined inside another function and can also be passed as argument to another function.

This sounds confusing but it s really not especially after you ve seen a few examples of how decorators work. Decorators provide a simple syntax for calling higher order functions. In this example let s consider a function that wraps the string output of another function by p tags.

For example given the decorator sealed we might write the sealed function as follows. But they are a neat way to add functionality to functions and classes. They can be referenced to passed to a variable and returned from other functions as well.

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. Return msg say bold tag say check the tail section for input output. Python decorator are the function that receive a function as an argument and return another function as return value.