On Sun, 17 Mar 2019 at 18:18, Arup Rakshit <[email protected]> wrote:
>
> I am reading a book where the author says that:
>
> In principle, it would also be possible to implement any @staticmethod
> completely outside of the class at module scope without any loss of
> functionality — so you may want to consider carefully whether a particular
> function should be a module scope function or a static method. The
> @staticmethod decorator merely facilitates a particular organisation of the
> code allowing us to place what could otherwise be free functions within
> classes.
>
> I didn’t get quiet well this block of text. My first question is how would I
> make a module level function as static method of a class. Can anyone give me
> an example of this? What are the contexts that would let you to think if they
> are good fit inside the class or module level scope functions?
The point the author is trying to make is that there's no practical
difference between
def say_hello(name):
print("Hello,", name)
and
class Talker:
@staticmethod
def say_hello(name):
print("Hello,", name)
You refer to the first as "say_hello", and the second as
"Talker.say_hello", but otherwise they are used identically. The
static method has no access to the class or instance variables, so it
has no special capabilities that the standalone "say_hello" function
has. So, to rephrase the words you used, @staticmethod lets you
organise your code in a certain way, but doesn't offer any extra
capabilities over module-level functions.
Paul
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