Loop through a system argument in Python - python-3.x

Question

This is a blackjack program. When stand function is false, main function is not supposed to append getCard() to myCards but for some reason it still does and it counts backwards. I don't know what I am doing wrong.
import random
import sys
def get_card():
return random.randint(1, 13)
def score(cards):
soft_ace_count = 0
total = 0
Ace = False
To check if an Ace exists in hand and to set face cards to correct value
for card in cards:
if card == 1:
Ace = True
total+=11
soft_ace_count+=1
elif card == 11 or card == 12 or card == 13:
total+=10
else:
total+=card
To convert Ace
for x in cards:
if Ace and total > 21:
total-=10
soft_ace_count-=1
return (total, soft_ace_count)
def stand(stand_on_value, stand_on_soft, cards):
total, soft_ace_count = score(cards)
print(f"In stand: {total}")
if total > 17 and total < 22:
return True
if total == stand_on_value:
return True
elif soft_ace_count == 0 and total == 17:
return True
elif stand_on_soft == True and total == 17:
return True
else:
return False
def numBusts(s):
total, soft_ace_count = s
busted_count = 0
if total > 21:
busted_count+=1
return busted_count
def main():
numSims = int(sys.argv[1])-1
standVal = int(sys.argv[2])
strategy = sys.argv[3]
strategy.upper()
for sims in range(numSims+1):
percent_bust = 0.0
myCards = [get_card(), get_card()]
print(f"in main: first two cards: {myCards}")
stand(standVal, strategy, myCards)
while not stand(standVal, strategy, myCards):
myCards.append(get_card())
percent_bust = (numBusts(score(myCards))/(numSims+1)) * 100
print(f"in main: percent bust: {percent_bust}")
if __name__ == "__main__":
[The image shows how it runs correctly until the while not stand function returns False.][1]main()
I have tried running for loops, not running loops, and other things.
Please help.

Answer 1

while not stand will append to the result of get_card() to myCards when stand is False.
But in your question, you say you don't want it to append when stand() is False.
Also, you seem to be calling the stand function twice consecutively, is this intended? The conditional actually calls the function in order to check its result.
Perhaps this will do what you expect?:
for sims in range(numSims+1):
percent_bust = 0.0
myCards = [get_card(), get_card()]
print(f"in main: first two cards: {myCards}")
if stand(standVal, strategy, myCards) is True:
myCards.append(get_card())
This conditional will append to myCards if and only if stand() returns True, but not when it returns False, 0, or None.