Simple Python class for relay (manage edge front, toggle)

relay_class.py

class Relay:
  def __init__(self):
    self.value  = False
    self._value = False

  @property
  def state(self):
    """Get the current relay state."""
    return self.value

  @state.setter
  def state(self, new_state):
    self._value = self.value
    self.value  = new_state

  @state.deleter
  def state(self):
    del self.value
    del self._value

  def triggPos(self):
    """True on positive edge."""
    return (self.value and not self._value)

  def triggNeg(self):
    """True on negative edge."""
    return (self._value and not self.value)

  def toggle(self):
    """Toggle relay state."""
    self._value = self.value
    self.value  = not self.value