getters.py

def get_flag():
    con = None
    flag = None
    while True:
        try:
            con = swat.CAS() if con is None else con
            flag = con.CASTable() if flag is None else flag
        except Exception:
            con = flag = None
        else:
            return flag


def data_requested():
    data = get_flag()


## auth.py


class AuthClass:
    @property
    def flag(self):
        return None

    def get_flag(self):
        return None


Auth = AuthClass(user, password)


## fetch_data.py
from Auth import Auth

data = Auth.get_flag()