Method __init__

Lib/test/test_gc.py:74–78

(self, partner=None)

    cycle have __del__ methods, the gc refuses to guess an order,
    and leaves the cycle uncollected."""
    def __init__(self, partner=None):
        if partner is None:
            self.partner = Uncollectable(partner=self)
        else:
            self.partner = partner
    def __tp_del__(self):
        pass