Input of 0 not working when converting to float?

Question

I'm having a problem in the betting part of a blackjack game i am making, i would like the player to be able to bet $0 if they want to, however when you input 0 it simply repeats the input. Please help as this is the last step to a successful game that i have been working on for a while.

money=250
validbet=False
while validbet==False:
    bet = None
    while not bet:
        unchecked_bet = input("How much would you like to bet? $")
        try:
            bet = float(unchecked_bet)
        except ValueError:
            print("Sorry, that is not a valid bet. Please enter a valid bet.".format(unchecked_bet))

    bet=float(unchecked_bet)

    if bet>=0 and bet<=money:
        validbet=True
    else:
        print("Sorry, that is not a valid bet. Please enter a valid bet.")
        validbet=False


print("You have bet: $"+str(bet))

Thanks in advance

0. is a "falsey" value; try `while bet is None` instead. – Hugh Bothwell Dec 06 '15 at 13:26 — Hugh Bothwell, Dec 06 '15 at 13:26

score 1 · Accepted Answer · edited May 23 '17 at 12:15

1

while not bet

evaluates to False if bet == 0. You probably want to check for

while bet is None

to handle None more explicitly.

Note that bet == None would work as well. But bet is None is more precise and the recommended way to check for None. (See this question for more details.)

edited May 23 '17 at 12:15

Community

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answered Dec 06 '15 at 13:26

Falko

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Input of 0 not working when converting to float?

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