We discussed the simplest possible (A201-like) implementation of BlackJack.

It behaves like this:

>>>
How many players:3
[('K', 'Clubs'), ('K', 'Diamonds')] 20
[('Q', 'Spades'), ('Q', 'Diamonds')] 20
[('7', 'Spades'), ('1', 'Hearts')] 18
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[('K', 'Clubs'), ('K', 'Diamonds')] 20
Do you want a hit? [yes/no]no
OK, we move on...
[('Q', 'Spades'), ('Q', 'Diamonds')] 20
Do you want a hit? [yes/no]yes
[('Q', 'Spades'), ('Q', 'Diamonds'), ('1', 'Diamonds')] 21
way to go!
[('7', 'Spades'), ('1', 'Hearts')] 18
Do you want a hit? [yes/no]yes
[('7', 'Spades'), ('1', 'Hearts'), ('8', 'Clubs')] 16
Do you want a hit? [yes/no]yes
[('7', 'Spades'), ('1', 'Hearts'), ('8', 'Clubs'), ('10', 'Spades')] 26
You busted!
[('7', 'Hearts'), ('10', 'Clubs')] 17
OK, we're done...
[('K', 'Clubs'), ('K', 'Diamonds')] 20  you win, dealer scored 17
[('Q', 'Spades'), ('Q', 'Diamonds'), ('1', 'Diamonds')] 21  you win, dealer scored 17
>>>

The code we developed is here (presented as a crossword puzzle, though).