Python Barcode Generation, Printing and Reading. Bitwise operations, one and two complements. User:Inductiveload/Integer to Roman numerals converter - Wikisource - Iceweasel. This function takes a (positive) integer and returns a string holding the Roman numeral of that number. #!
/usr/bin/env python # -*- coding: UTF-8 -*- def roman_numerals(x): #Returns an upper-case Roman Numeral string representation of a decimal integer, n numeral_chars = (('M', 1000),('CM', 900), ('D', 500), ('CD', 400), ('C', 100), ('XC', 90), ('L', 50), ('XL', 40), ('X', 10), ('IX', 9), ('V', 5), ('IV', 4), ('I', 1)) #RN character groups for each value up to 1000 (past this requires overbar) roman_num = []#initialise the list of characters groups for chr, value in numeral_chars:#for each group (remainder,x) = divmod(x, value)#work out how many of that group are needed, and remove from n roman_num.append(chr*remainder)#add the right number of groups to the list result = ''#empty string to populate return result.join(roman_num)#add each character group to the string and return.
Data Structures and Algorithms with Object-Oriented Design Patterns in Python.