Cell [29] in notebook ch06-classes-objects.ipynb gives an error as the (overloaded) constructor of the ElementaryParticle class doesn't create the data attributes initialized bu the generator of the Particle class.
This can be solved by calling Particle.__init__(self) explicitly:
# elementary.py
class ElementaryParticle(Particle):
roar = "I am an Elementary Particle!"
def __init__(self, spin):
Particle.__init__(self)
self.s = spin
self.is_fermion = bool(spin % 1.0)
self.is_boson = not self.is_fermion
Cell [29] in notebook ch06-classes-objects.ipynb gives an error as the (overloaded) constructor of the ElementaryParticle class doesn't create the data attributes initialized bu the generator of the Particle class.
This can be solved by calling
Particle.__init__(self)explicitly: