Python's equivalent of static member data?

[Erik Max Francis]

Bram Stolk wrote:

> In C++, you can have static member data: only one instance of the
> data,
> shared by all instances of the class.
> 
> What is the equivalent in Python?

Class-scope attributes:

>>> class C:
...  X = 10
...  def __init__(self, x):
...   self.x = x
... 
>>> c = C(1)
>>> c.x
1
>>> c.X
10
>>> C.X
10
>>> C.X = 20
>>> c.X
20
>>> c.x
1

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