Python: static variable decorator

Question

I\'d like to create a decorator like below, but I can\'t seem to think of an implementation that works. I\'m starting to think it\'s not possible, but thought I would ask yo

Answer 1

Here is a really simple solution that works just like normal python static variables.

def static(**kwargs):
  def wrap(f):
    for key, value in kwargs.items():
      setattr(f, key, value)
    return f
  return wrap

Example usage:

@static(a=0)
def foo(x):
  foo.a += 1
  return x+foo.a

foo(1)  # => 2
foo(2)  # => 4
foo(14) # => 17

This more closely matches the normal way of doing python static variables

def foo(x):
  foo.a += 1
  return x+foo.a
foo.a = 10