return math.sqrt((self.i - other.i)**2 + (self.j - other.j)**2)
def bearing(self, other=None):
if not other: other = coord(0, 0)
return math.sqrt((self.i - other.i)**2 + (self.j - other.j)**2)
def bearing(self, other=None):
if not other: other = coord(0, 0)