Learn Interfaces by Building an Equation Solver - Step 14

Tell us what’s happening:

I am really not sure what I am missing here, I have tried a few methods but I keep coming up with a TypeError: invalid syntax. Any and all help/clarification would be greatly appreciated because my brain hurts at this point :confounded:

Your code so far

from abc import ABC, abstractmethod

# User Editable Region

class Equation(ABC):
    degree: int
    
    def __init__(self, *args):
        if (self.degree + 1) != len(args):
            raise TypeError(
                f"'{self.__class__.__name__}' object takes {self.degree + 1} positional arguments but {len(args)} were given")
        (not isinstance(arg, (int, float)) for arg in args):
            raise TypeError("Coefficients must be of type 'int' or 'float")


# User Editable Region

    def __init_subclass__(cls):
        if not hasattr(cls, "degree"):
            raise AttributeError(
                f"Cannot create '{cls.__name__}' class: missing required attribute 'degree'"
            )
    
    @abstractmethod
    def solve(self):
        pass
        
    @abstractmethod
    def analyze(self):
        pass
        
class LinearEquation(Equation):
    degree = 1
    
    def solve(self):
        pass
    
    def analyze(self):
        pass
    
lin_eq = LinearEquation(2, 3)

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Learn Interfaces by Building an Equation Solver - Step 14

oh geez. Nvm I figured out my airhead mistake. Thanks anyways!

1 Like

An airhead would not have figured it out