Roman Numeral.py

# Python 3 script to convert Arabic numerals to Roman numerals.


# which = input("To arabic or roman numerals? ")
which = "arabic" # currently only works for conversion to roman numerals
if which == "arabic": # placeholder
  arabic = input("Input your arabic numeral: ") # prompt user
	arabicArray = list(arabic) # [1,2,3,4] represents 1000 + 200 + 30 + 4... How do I make this list a list of ints?
	romanArray = [] # fill later
	for dig in range((len(arabicArray)-1),-1,-1): # iterate backwards
		if dig == len(arabicArray)-1: # ones place
			# 1 through 10
			if int(arabicArray[dig]) == 5:
				romanArray.append("V")
			elif int(arabicArray[dig]) > 5:
				if (int(arabicArray[dig])%5) <= 3:
					romanArray.append("V" + "I"*(int(arabicArray[dig])%5))
				else:
					romanArray.append("IX")
			else:
				if int(arabicArray[dig]) == 4:
					romanArray.append("IV")
				else:
					romanArray.append("I"*int(arabicArray[dig]))
		elif dig == len(arabicArray)-2: # tens place
			# 10 through 100
			if int(arabicArray[dig]) == 5:
				romanArray.append("L")
			elif int(arabicArray[dig]) > 5:
				if (int(arabicArray[dig])%5) <= 3:
					romanArray.append("L" + "X"*(int(arabicArray[dig])%5))
				else:
					romanArray.append("XC")
			else:
				if int(arabicArray[dig]) == 4:
					romanArray.append("XL")
				else:
					romanArray.append("X"*int(arabicArray[dig]))
		elif dig == len(arabicArray)-3: # hundreds place
			# 100 through 1000
			if int(arabicArray[dig]) == 5:
				romanArray.append("D")
			elif int(arabicArray[dig]) > 5:
				if (int(arabicArray[dig])%5) <= 3:
					romanArray.append("D" + "C"*(int(arabicArray[dig])%5))
				else:
					romanArray.append("CM")
			else:
				if int(arabicArray[dig]) == 4:
					romanArray.append("CD")
				else:
					romanArray.append("C"*int(arabicArray[dig]))
		else:
			romanArray.append("M") # beyond the thousands place
	newlist = romanArray[::-1] # reverse array
	print("".join(newlist)) # joins the array into a string and prints
# I think there may be an easier way to do this using arrays like [[1,"I"],[4,"IV"],...]