Using a property object

property.py

class Book:

    def __init__(self, title, author):
        self.title = title
        self.author = author

    def getShortDescription(self):
        """The getter for the shortDescription property"""
        return self.title + ' was written by ' + self.author

    def setShortDescription(self, shortDescription):
        """The setter for the shortDescription property"""
        print("Cannot set a short description!")

    def delShortDescription(self):
        """The deleter for the shortDescription property"""
        print("Cannot delete a short description!")

    shortDescription = property(getShortDescription, setShortDescription, delShortDescription, "A short description of the book")

b = Book("Das Kapital", "Karl Marx")

# using the getter:
print(b.shortDescription) # -> Das Kapital was written by Karl Marx

# using the setter:
b.shortDescription = 42 # -> Cannot set a short description!

# using the deleter:
del b.shortDescription # -> Cannot delete a short description!