Sujet : Difference method vs attribut = function
De : ml (at) *nospam* fam-goebel.de (Ulrich Goebel)
Groupes : comp.lang.pythonDate : 28. Jun 2024, 18:08:54
Autres entêtes
Message-ID : <mailman.179.1719687158.2909.python-list@python.org>
References : 1
User-Agent : Sylpheed 3.7.0 (GTK+ 2.24.33; x86_64-pc-linux-gnu)
Hi,
a class can have methods, and it can have attributes, which can hold a function. Both is well known, of course.
My question: Is there any difference?
The code snipped shows that both do what they should do. But __dict__ includes just the method, while dir detects the method and the attribute holding a function. My be that is the only difference?
class MyClass:
def __init__(self):
functionAttribute = None
def method(self):
print("I'm a method")
def function():
print("I'm a function passed to an attribute")
mc = MyClass()
mc.functionAttribute = function
mc.method()
mc.functionAttribute()
print('Dict: ', mc.__dict__) # shows functionAttribute but not method
print('Dir: ', dir(mc)) # shows both functionAttribute and method
By the way: in my usecase I want to pass different functions to different instances of MyClass. It is in the context of a database app where I build Getters for database data and pass one Getter per instance.
Thanks for hints
Ulrich
-- Ulrich Goebel <ml@fam-goebel.de>