# Example of input verification


# Can you write a function now that checks for a VALID answer.
# FOr example, in the menu below valid answers are a number from the list:
# [1, 2, 3]?
#def getValidNumber(question, validAnswer):
   
    

def getNumericAnswer(question):

    while(True):
        x = raw_input(question)
        
        # is it all digits
        if x.isdigit():
            return int(x)
        else:
            print "There were other things in there... give me all numbers"
    

def getDecimalAnswer(question):

    # All numbers and one decimal
    ### Two decimals == bad
    ### any other char == bad

    while (True):
        x = raw_input(question)
        stList = x.split(".")
        if len(stList) > 2:
            # There are too many decimal points!
            print "Error, you have more than one decimal."
            
        elif len(stList) == 1:
            # There are no decimals in the input, check for non-numeric digits
            st = stList[0]
            if st.isdigit():
                return float(st)
            else:
                print "There are non-numeric digits in your number!"
        else:
            # There is one decimal point, check each substring as a number
            if stList[0].isdigit() and stList[1].isdigit():
                # We're good
                return float(x)
            else:
                print "There are non-numeric digits in your number!"
                
        
def main():
    print """
        Main Menu
        1. Call home and ask for money
        2. Go to Atlantic City
        3. Use your Python skill to get a job
        """
    ans = getNumericAnswer("What do you want to do: ")
    print "The answer was %d " %(ans)

    ans = getDecimalAnswer("What is pi? ")
    print "Pi is %f" %(ans)

main()