Movatterモバイル変換

[Python-ideas] Define a method or function attribute outside of a class with the dot operator

• Previous message (by thread):[Python-ideas] Define a method or function attribute outside of a class with the dot operator
• Next message (by thread):[Python-ideas] Define a method or function attribute outside of a class with the dot operator
• Messages sorted by:[ date ][ thread ][ subject ][ author ]

On Mon, Feb 13, 2017 at 06:14:34PM -0800, David Mertz wrote:> On Mon, Feb 13, 2017 at 5:48 PM, Steven D'Aprano <steve at pearwood.info>> wrote:>> > # the clean proposed way:> > def instance.method(self):  # or MyClass.method> >     ...> >> > But I don't think that we can reasonably argue that the suggested syntax> > isn't a clear, non-trivial win over the status quo, not unless we're> > also going to argue that introducing decorator syntax was a waste of> > time.> >>> I argue it's not a win specifically because we HAVE decorators already.I wouldn't word it quite like that, but I'll certainly agree that a decorator may be able to (almost) solve the method-injection use-case. Being able to write:@inject(Class)def method ...is almost as nice as def Class.method ...The one thing a decorator can't do is clean up after itself and avoid leaving an unneeded and unnecessary 'method' name in the current namespace.[...]> Moreover, I think your spelling of what it is sugar for is slightly off.> The `del method` at the end feels wrong to me.  Specifically, in the> example I repeated of attaching callbacks, the reason I'd want a function> defined outside any particular class (or instance) scope is because I might> want to use the same function as a method of various classes.The existing syntax won't be going away, so anything you can do now, you will still be able to do :-)My gut feeling is that `def Class.method` should avoid polluting the current namespace. If you need access to the method again, you can always grab it from `Class.method`.-- Steve

• Previous message (by thread):[Python-ideas] Define a method or function attribute outside of a class with the dot operator
• Next message (by thread):[Python-ideas] Define a method or function attribute outside of a class with the dot operator
• Messages sorted by:[ date ][ thread ][ subject ][ author ]