Learn Interfaces by Building an Equation Solver - Step 7

Python
1

Tell us what’s happening:

Help me make this error make sense
TypeError: can’t instantiate abstract class Equation with abstract methods analyze, solve and "You should define a method named solve within the LinearEquation

from abc import ABC, abstractmethod


class Equation(ABC):
    @abstractmethod
    def solve(self):
        pass

    @abstractmethod    
    def analyze(self):
        pass
        
class LinearEquation(Equation):
    def solve(self):
        pass

eq = Equation()
lin_eq = LinearEquation()

Your code so far


# User Editable Region

from abc import ABC, abstractmethod


class Equation(ABC):
    @abstractmethod
    def solve(self):
        pass

    @abstractmethod    
    def analyze(self):
        pass
        
class LinearEquation(Equation):
    def solve(self):
        pass

eq = Equation()
lin_eq = LinearEquation()

# User Editable Region

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.0.0 Safari/537.36

Challenge Information:

Learn Interfaces by Building an Equation Solver - Step 7

2

don’t do this, you can’t instantiate an abstract class

3

I imagine the instructions didn’t ask for this?

4

Step 4 required the eq variable assignment. I’m still working on it thanks.

5

So you have not read this part of the instructions

Therefore, delete the Equation instance to get rid of the error.

6

Thank you, [{reading is fundamental}]