I am writing a program that guides users through making a payment on their credit card but, I am running into problems when the user enters anything other than ‘yes’ or ‘no’ when asked if they would like to make a payment.

I tried

def Credit_card():
    ccb=float(input("What is your credit card balance?n"))
    pur=float(input("How much have you spent in purchases?n"))
    minpymt=pur*.12
    print("Your minimum payment is ${0}".format(minpymt))
    dectopay=input("Would you like to make a payment?n Please type 'yes' or 'no'n")
    while (dectopay!='yes'or'no'):
           input("We're sorry. You must answer either 'yes' or 'no'.n Would you like to make a payment?n")
    if(dectopay=="yes"):
        pymt=float(input("Wonderful! How much would you like to pay?n"))
        while(pymt<minpymt):
          pymt=float(input("We're sorry, but your payment must be greater than or equal to your minimum payment of ${0}nHow much would you like to pay?n").format(minpymt))
        print("Thank you for your payment!n")
        print("Your new credit card balance is ${0}n".format((ccb+pur)-pymt))     
    elif(dectopay=="no"):
        print("Your credit card balance is ${0}. Thank you for visiting Credit Central. n Have a wonderful day!".format(ccb+pur))


           
    
Credit_card()

Which, after I enter ‘yes’ or ‘no’ I was hoping the loop would cancel. The condition for the loop is that:

(dectopay!='yes'or'no')

which should end if they do equal either yes or no right?

Let me know. I am gonna skip this sidequest and continue with some html/css/java stuff because getting stuck on such a mundane task seems like a waste of time. I still want the program to do what I want though.

Thanks for any help.