### Tell us what’s happening:

I’m trying to make a dictionary with the coefficients of the equation, but I’m stuck. Please help me!

I’ve tried this code `self.coefficients = {key: val for (key, val) in enumerate(args)}`

with and without tuple notation, with `str(key)`

instead of `key`

, and so on.

### Your code so far

```
from abc import ABC, abstractmethod
class Equation(ABC):
degree: int
def __init__(self, *args):
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")
# User Editable Region
self.coefficients = {key: val for key, val in enumerate(args)}
# 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