[Fixed]-How to assign a model instance to a class property in django


Your SingleLeagueCompetition class should inherit from BaseCompetition, like this:

class BaseCompetition:
    def __init__(self, company):
        self.company = company
class SingleLeagueCompetition(BaseCompetition):
    def __init__(self, company):

also instead of call constructor by using parent class BaseCompetition._init_ you can use super to bind it in child.

More reference consult: https://docs.python.org/3.4/library/functions.html#super

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