Decorators are commonly used with the timer() function to time the execution of a function. You can create a decorator that wraps a function and adds timing functionality to it, allowing you to easily time the execution of any function you want.
Here's an example of a decorator that adds timing functionality to a function:
import timedef timer_decorator(func): def wrapper(*args, **kwargs): start_time = time.perf_counter() result = func(*args, **kwargs) end_time = time.perf_counter() print(f"Elapsed time: {end_time - start_time:.6f} seconds") return result return wrapper |
This decorator takes a function as an argument and returns a new function that wraps the original function with timing functionality. When the new function is called, it records the start time, calls the original function, records the end time, calculates the elapsed time, and prints it to the console.
To use this decorator to time a function, simply apply it to the function you want to time:
@timer_decoratordef my_function(): # Code to be timed here passmy_function() |
In this example, the @timer_decorator syntax applies the timer_decorator decorator to the my_function() function. When the function is called, the decorator will add timing functionality to it and print the elapsed time to the console.
Using a decorator with timer() can be useful when you have multiple functions that you want to time, as it allows you to add timing functionality to any function by simply applying the decorator to it. It also keeps the timing code separate from the function code, making it easier to maintain and modify.