I thought I understood what abstract class means but my professor just commented that it wasn't a abstract class. What I did is essentially this:

first instruction: create an abstract base class with two int attributes then derived another class called Hero with a string attribute which stores the title "hero"

from abc import ABC

class Person(ABC):
def __init__(self, height, speed):
self.height = height
self.speed = speed

def walk(self):
//walk method

from person import Person

class Hero(Person):
def __init__(self, height, speed):
super().__init__(height, speed)
self.person_title = "Hero"

was this the right way to do it?

I have several different metric reports that share multiple things in common. As such, I have created an ABC that they all inherit. However, I would like all subclasses to automatically inherit the defined init in the ABC without having to copy the variables over and over in my inheriting classes.

Here is a sample of what I'm doing:

class Metric(metaclass=ABCMeta):
    """
    Abstract class for all metrics to inherit from.
    """
    def __init__(self, startdate=None, enddate=None):
        self.startdate = startdate
        self.enddate = enddate

    @abstractclassmethod
    def execute(self):
        pass


class SampleReport(Metric):
    def __init__(self):
        super().__init__()

    def execute(self):
        pass

In this scenario I won't be able to instantiate SampleReport and set startdate & enddate. I found a Stackoverflow thread describing the exact problem I'm facing, but I don't see a good solution to the issues: http://stackoverflow.com/questions/6535832/python-inherit-the-superclass-init