Class template for beginners
This:

...
while (current_class.__name__ != "Template"):
...


is weird. Do this:

...
while current_class != Template:
...


it does the same, except comparing classes instead of strings. 



This is strange as well:

for i in reversed(inits):
     i(self)


i is used for iteration so it becomes obsucre, are you calling an int? This:

for init in reversed(inits):
    init(self)


is more explanatory. 



I don't really know about this next part, but you could define a small lambda

extract_first = lambda x: x[0]


with an explanatory name, leaving that part of the code as this:

extract_first = lambda x: x[0]

while current_class != Template:
    inits.append(current_class.init)
    current_class = extract_first(current_class.__bases__)
for init in reversed(inits):
    init(self)


It leaves it with more words and text but less programming lingo. Might be good. 



Now what I would do if this was for someone new to programming is relay on something else then abstraction of the init and abstract in something like biology:

class Exists(object):
    perceptible = True


class Alive(Exists):
    can_use_sustenance = True


class Vertebrate(Alive):
    can_move = True


class Mammal(Vertebrate):
    heat_generation = True


class Dog(Mammal):
    pass


class Cat(Mammal):
    pass


Tested on my significant other :-)