Is it possible to have static class variables or methods in Python? What syntax is required to do this?
When we declare a variable inside a class but outside any method, it is called as class or static variable in python. Class or static variable can be referred through a class but not directly through an instance.
Class variables are also known as static variables, and they are declared outside a method, with the help of the keyword 'static'. Static variable is the one that is common to all the instances of the class. A single copy of the variable is shared among all objects.
A static variable in Python is a variable that is declared inside a defined class but not in a method. This variable can be called through the class inside which it is defined but not directly. A Static variable is also called a class variable.
Variables declared inside the class definition, but not inside a method are class or static variables:
>>> class MyClass: ... i = 3 ... >>> MyClass.i 3
As @millerdev points out, this creates a class-level i
variable, but this is distinct from any instance-level i
variable, so you could have
>>> m = MyClass() >>> m.i = 4 >>> MyClass.i, m.i >>> (3, 4)
This is different from C++ and Java, but not so different from C#, where a static member can't be accessed using a reference to an instance.
See what the Python tutorial has to say on the subject of classes and class objects.
@Steve Johnson has already answered regarding static methods, also documented under "Built-in Functions" in the Python Library Reference.
class C: @staticmethod def f(arg1, arg2, ...): ...
@beidy recommends classmethods over staticmethod, as the method then receives the class type as the first argument.
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With