[ERROR] AttributeError: 'NoneType' object has no attribute 'reverseHolofoil'

[ushmau5]

As a software engineer,
I want to default the values for the TCGPrices and TCGPlayer objects,
So that there is less chance of Attribute errors.

Background:

I have noticed this exception frequently popping up;
[ERROR] AttributeError: 'NoneType' object has no attribute 'reverseHolofoil'
It appears that the TCGPrices object is None so when the reverseHolofoil property is accessed it throws an exception.

Example with this issue: 'set_code': 'pop4', 'id': '1', 'name': 'Chimecho (Delta Species)'

Proposed Solution:

Default the value of the prices attribute on the TCGPrices object to a TCGPrices object with None values for normal, holofoil, etc.

Default the value of tcgplayer attribute on the Card object to a TCGPlayer object.

@dataclass
class Card():
     ......
     tcgplayer: TCGPlayer = TCGPlayer()

@dataclass
class TCGPlayer():
     ....
    prices: TCGPrices = TCGPrices()

Test Scenarios

• GIVEN a Card object WHEN I access the tcgplayer attribute THEN the value will always be a TCGPlayer object.
• GIVEN a TCGPlayer object WHEN I access the prices attribute THEN the value will always be a TCGPrices object.