human
What is a the Python code you requested given the following:
I am working on the file "Section 1 - Core Python/Chapter 09 - Classes & OOPS/OOPs Fundamentals - ABC.ipynb".
The first task is:
Abstract Properties

If your API specification includes attributes in addition to methods, you can require the attributes in concrete classes by defining them with @abstractproperty
Can you write Python code for it?
assistant
#Here is the Python code you requested.

from abc import ABCMeta, abstractmethod

class Base(metaclass=ABCMeta):
    
    @abc.abstractproperty
    def value(self):
        return 'Should never get here'

class Implementation(Base):
    @property
    def value(self):
        return 'concrete property'

if __name__ == '__main__':
#     try:
#         b = Base()
#         print ('Base.value:', b.value)
#     except Exception as err:
#         print ('ERROR:', str(err))

    i = Implementation()
    print ('Implementation.value:', i.value)

import abc

class Base(metaclass=abc.ABCMeta):
    
    @abc.abstractproperty
    def value(self):
        return 'Should never see this'
    
    @value.setter
    def value(self, newvalue):
        return

class Implementation(Base):
    
    _value = 'Default value'
    
    @property
    def value(self):
        return self._value

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

i = Implementation()
print ('Implementation.value:', i.value)

i.value = 'New value'
print ('Changed value:', i.value)