atm project 1 | Python Fiddle

shutdown = False

balance = float( 500.50)

format (balance, '.2f')

def inputnumber (message):
    '''This function ensures that only numbers may be put in as a valid input, anywhere in the program.'''
    try:
        val = float(input(message))
    except ValueError:
        return -1
    return val

def printbalance ():
    '''this prints the Balance to the user'''
    print ("Your current balance is: ")
    print (balance)
    
def fastcash ():
    '''determines if the user's account has at least 50$, then draws that out'''
    global balance
    fast = 50
    if balance < (50): 
        print ("Sorry, but you do not have enough funds to process this transcaction.")
    else:
        print ("Dispensing fast cash ($50)")
        balance -= fast

def deposit ():
    '''This adds the user inputted float to the balance'''
    global balance
    deposited = inputnumber("How much would you like to deposit? ")

if deposited <= (0):
        print ("That is not a valid amount")
    elif deposited >= (0):
        balance += deposited
        print ("deposit complete. Balance updated")
    else:
        print ("Error. That is not a valid input")

def withdrawbalance ():
    '''This function withdraws funds from the user's account balance. If the balance is too low, it returns an error.'''
    global balance
    withdraw = inputnumber("How much would you like to withdraw?: ")
    if withdraw < balance:
        print ("Transaction complete. Dispensing money.")
        balance -= withdraw
    else:
        print ("Insufficient funds.")

while (shutdown == False):
#added in to keep refreshing the menu after an action is made/input is made

print (" ")
    print ("menu")
    print (" ")
    print ("1 = Make a deposit")
    print ("2 = Make a withdrawal")
    print ("3 = view balance")
    print ("4 = Fast Cash ($50)")
    print ("5 = quit program")
    userchoice = inputnumber("What would you like to do?: ")

if (userchoice ==1):
        deposit ()
        
        
    elif (userchoice ==2):
        withdrawbalance ()
            
            
    elif (userchoice ==3):
        printbalance ()

elif (userchoice ==4):
        fastcash()

elif (userchoice ==5):
        print ("Thank you for banking with us")
        quit
        shutdown = True

else:
        print ("Error")

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