'namespace' shorthand for function arguments?

[shadowphile]

(using 3.9)
I tried to search for this subject but couldn't find the right wording (typical problem).
I have a function I am passing an object with attributes ('hand'). Hand has four attributes and I end up with dozens of references to those attributes by hand.this and hand.that.
What seems 'pythonic' would be a way to 'namespace' the argument for lack of a better word so I can just use 'this' and 'that'. For now I copied the four arguments into local variables, did all my work with those, then copied them back to the argument object. Here is my code with my klunky fix:

def updatevalue(hand):
    cards=hand.cards
    aceslow=hand.aceslow
    aceshigh=hand.aceshigh
    value=sum(cards)+(aceshigh*10) #for every aceshigh add 10
    while (value > 21) and (aceshigh > 0):  #lower aces until hand is <= 21 or no more aces
        aceshigh -= 1
        value -= 10
        aceslow += 1
        print(f'Current hand: {value}, aces high: {aceshigh}, aces low: {aceslow}')
    while aceshigh !=0 and value < 21:   #optional downgrades of remaining aces
        reply=input('Downgrade a remaining Ace?')
        if reply not in ('y','Y','n','N'):
            reply = 'y'
            print('Hunh? Try again, y or n.')
            continue
        elif reply.capitalize() =='Y':
            aceshigh -= 1
            value -= 10
            aceslow += 1
            continue
        else:
            break
    print('---------------------------------')
    print(f'Final hand: {value}, aces high: {aceshigh}, aces low: {aceslow}')
    hand.value = value
    hand.cards = cards
    hand.aceslow = aceslow
    hand.aceshigh = aceshigh
    return value