Learn Interfaces by Building an Equation Solver - Step 17

Python
1

Tell us what’s happening:

I don’t know why I can’t keep going on it.Please help me check what’s matter with my code,thanks.

Your code so far

from abc import ABC, abstractmethod

class Equation(ABC):
    degree: int

    def __init__(self, *args):
        coefficients:{}
        if (self.degree + 1) != len(args):
            raise TypeError(
                f"'Equation' object takes {self.degree + 1} positional arguments but {len(args)} were given"
            )
        if any(not isinstance(arg, (int, float)) for arg in args):
            raise TypeError("Coefficients must be of type 'int' or 'float'")
        if args[0] == 0:
            raise ValueError("Highest degree coefficient must be different from zero")
        self.coefficients={str(idx):arg for idx,arg in enumerate(args)}
        print(type(self.coefficients))
        print(self.coefficients)

# User Editable Region

        

# 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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Challenge Information:

Learn Interfaces by Building an Equation Solver - Step 17

2

I think your self.coefficients has the wrong key: value pairs. 1 should be first with the first value of args and zero should be second with the second value. Try reversing the order of your idx variable.