Does Python have something like Perl 5.10's "state" variables?

Question

In Perl 5.10, I can say:

sub foo () {
  state $x = 1;
  say $x++;
}

foo();
foo();
foo();

...and it will print out:

1
2
3

Does Python have something like this?

Answer 1

A class may be a better fit here (and is usually a better fit for anything involving "state"):

class Stateful(object):

    def __init__(self):
        self.state_var = 0

    def __call__(self):
        self.state_var = self.state_var + 1
        print self.state_var

foo = Stateful()
foo()
foo()

Answer 2

The closest parallel is probably to attach values to the function itself.

def foo():
    foo.bar = foo.bar + 1

foo.bar = 0

foo()
foo()
foo()

print foo.bar # prints 3