human
I am working on the file "00-BestPractices/Decorator.ipynb".
The first task is:
More complex decorator
The decorator converts the result of the decoreted functin to uppercase letters
Can you write Python program for it?

=====
Can you provide a the Python program you requested?
assistant
#Here is the Python program you requested.

def uppercase(func):
    def wrapper():
        original_result = func()
        modified_result = original_result.upper()
        return modified_result
    return wrapper

@uppercase
def greet():
    return 'Hello!'

greet()