Happy Birthday in age base

happybirthdaybase.py

def baseToBase(originalNumber, originalBase, newBase):
	originalNumber = str(originalNumber)
	numberAsInteger = 0
	for n in range(0, len(originalNumber)):
		numberAsInteger = (numberAsInteger * len(originalBase)) + int(originalBase[originalBase.find(originalNumber[n])])
	newNumber = ""
	if (numberAsInteger == 0): newNumber = "0"
	else:
		while (numberAsInteger > 0):
			newNumber = newBase[int(numberAsInteger % len(newBase))] + newNumber
			numberAsInteger = (numberAsInteger - numberAsInteger % len(newBase)) / len(newBase)
	return newNumber

def base(number):
	bases = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
	return bases[0:number]

def suffix(number):
	if number % 100 >= 10 and number % 100 < 20: return "th"
	elif number % 10 == 1: return "st"
	elif number % 10 == 2: return "nd"
	elif number % 10 == 3: return "rd"
	else: return "th"

person = "REPLACE_WITH_PERSON_NAME"
age = 10 #Replace with whatever age they are. The age is the base the value is converted into

string = "Happy " + str(age) + suffix(age) + " Birthday " + person + "!"
newString = ""

for character in string:
	newCharacter = baseToBase(ord(character), base(10), base(age))
	newString += newCharacter + " "

print(string)
print(newString)