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...staticmethod", x, y foo = staticmethod(foo) C.foo(1, 2) c = C() c.foo(1, 2) Both the call C.foo(1, 2) and the call c.foo(1, 2) call foo() with two arguments, and print "staticmethod 1 2". No "self" is declared in the definition of foo(), and no instance is required in the call. If an instance is used, it is only used to find the class that defines the static method. This works for classic and new classes! The line "foo = staticmethod(foo)" in the class statement is the c...
...staticmethod", x, y foo = staticmethod(foo) C.foo(1, 2) c = C() c.foo(1, 2) Both the call C.foo(1, 2) and the call c.foo(1, 2) call foo() with two arguments, and print "staticmethod 1 2". No "self" is declared in the definition of foo(), and no instance is required in the call. If an instance is used, it is only used to find the class that defines the static method. This works for classic and new classes! The line "foo = staticmethod(foo)" in the class sta...
...staticmethod function function Class method classmethod method method Slot method function function method This is the analogous table for extension types (C classes): kind __dict__ unbound bound Normal method method_descriptor method_descriptor builtin_function_or_method Static method staticmethod builtin_function_or_method builtin_function_or_method Class method classmethod_descriptor builtin_function_or_method builtin_function_or_method Slot method wrapper_descriptor wrappe...
...staticmethod", x, y foo = staticmethod(foo) C.foo(1, 2) c = C() c.foo(1, 2) Both the call C.foo(1, 2) and the call c.foo(1, 2) call foo() with two arguments, and print "staticmethod 1 2". No "self" is declared in the definition of foo(), and no instance is required in the call. The line "foo = staticmethod(foo)" in the class statement is the crucial element: this makes foo() a static method. The built-in staticmethod() wraps its function argument in a special kind of descriptor whose __g...
...staticmethods. Self does not add much value since there is no self or cls to return. The only possible use cases would be to return a parameter itself or some element from a container passed in as a parameter. These don’t seem worth the additional complexity. class Base: @staticmethod def make() -> Self: # Rejected ... @staticmethod def return_parameter(foo: Self) -> Self: # Rejected ... Likewise, we reject Self in metaclasses. Self in this PEP consiste...
...staticmethod()) have been available in Python since version 2.2. It's been assumed since approximately that time that some syntactic support for them would eventually be added to the language. Given this assumption, one might wonder why it's been so difficult to arrive at a consensus. Discussions have raged off-and-on at times in both comp.lang.python and the python-dev mailing list about how best to implement function decorators. There is no one clear reason why this should be so, but a few ...
...staticmethod, classmethod or classmethod_descriptor is bound (i.e. __get__ is called), a base_function instance is created with m_self != NULL. For a classmethod, this is obvious since m_self is the class that the method is bound to. For a staticmethod, one can take an arbitrary Python object for m_self. For backwards compatibility, we choose m_self = __parent__ for static methods of extension types. __self__ in base_function It may look strange at first sight to add the __self__ slot in base_...
...staticmethod of the class and not a method of the metaclass). The advantage of using a method on the metaclass is that will give an error when two classes on the MRO have different metaclasses that may have different behaviors for __getdescriptor__. With a normal classmethod that problem would pass undetected while it might cause subtle errors when running the code. History 23-Jul-2015: Added type flag Py_TPFLAGS_GETDESCRIPTOR after talking with Guido. The new flag is primarily useful to avo...
...staticmethod, zd will succeed, and zm will silently yield nothing (which is the problem we are trying to avoid in the first place). This proposal is further complicated by the fact that CPython's actual zip type is currently an undocumented implementation detail. This means that choosing one of the above behaviors will effectively "lock in" the current implementation (or at least require it to be emulated) going forward. Change The Default Behavior Of zip There is nothing "wrong" with the def...
...staticmethod are supported too. Since both are descriptors, the former returns a bound method, and the latter returns its wrapped function.) If the object is an instance of functools.partial, construct a new Signature from its partial.func attribute, and account for already bound partial.args and partial.kwargs If the object is a class or metaclass: If the object's type has a __call__ method defined in its MRO, return a Signature for it If the object has a __new__ method defined in its MRO, ret...
...staticmethod in class bodies. It's not really clear if it needs to, however. Copyright This document has been placed in the public domain. Source: https://github.com/python/peps/blob/master/pep-3124.txt
...staticmethod, we recommend the same guideline as above. If the stub is for any other kind of method, we recommend against using LiteralString in the return type of the method or any of its overloads. This is because, even if all the explicit parameters have type LiteralString, the object itself may be created using user data and thus the return type may be user-controlled. If the stub is for a class attribute or global variable, we also recommend against using LiteralString because the untyped...
...staticmethod def foo(bar): (The PEP needs to be updated to reflect the current state) When importing a module M raises an exception, Python no longer leaves M in sys.modules. Before 2.4a2 it did, and a subsequent import of M would succeed, picking up a module object from sys.modules reflecting as much of the initialization of M as completed before the exception was raised. Subsequent imports got no indication that M was in a partially- initialized state, and the importers could get into arbit...
...staticmethod and @classmethod. Type Definition Syntax The syntax leverages PEP 3107-style annotations with a number of extensions described in sections below. In its basic form, type hinting is used by filling function annotation slots with classes: def greeting(name: str) -> str: return 'Hello ' + name This states that the expected type of the name argument is str. Analogically, the expected return type is str. Expressions whose type is a subtype of a specific argument type are als...
...staticmethod and super types participate in garbage collection. Before this change, it was possible for leaks to occur in functions with non-global free variables that used these types. Extension modules the socket module has a new exception, socket.timeout, to allow timeouts to be handled separately from other socket errors. SF bug 751276: cPickle has fixed to propagate exceptions raised in user code. In earlier versions, cPickle caught and ignored any exception when it performed operation...