Kent Johnson wrote: > Hi Alan, > > I am forwarding your question to [email protected] which is the correct > address for the list. [EMAIL PROTECTED] sends questions to the > *maintainers* of the list, not the list itself. > > Kent > > Alan Gilfoy wrote: > >> I am learning how to program in python as a major component of my >> school's senior project, and my most recent assignment was to write a >> program that converts Roman numerals to digital (base-10 Arabic numerals). >> >> Now, I was told I have to write the program myself, but I was told I was >> allowed to ask for hints. :) >> >> As of right now, I've written a user interface (after all, here that's a >> simple loop-and-prompt setup leading to print statements), but I have >> "dummy code" in the place where the conversion code needs to be. >> >> I want to create two separate functions: >> >> def.toRoman(digital_input) >> print "Digital - to - Roman conversion (dummy code)" >> roman_result = "XXX" >> return roman_result >> >> def.toDigital(roman_input) >> print "Roman - to - digital conversion (dummy code)" >> digital_result = 30 >> return digital_result >> >> I'm going to set each of those two "inputs" by a prompt asking for what >> the program user wants to work with. >> >> #Such as: >> digital_input = int(raw_input("What digital (base-10) number do you wish >> to convert to Roman numerals?)) >> >> I'm not sure how I would program Python to run the actual conversions. >> >> PS: I'm familiar with Roman numerals, and I know how to do the >> conversions manually. >> Step 1: write down the steps you use "manually" Step 2: for each step ask "how do I do this in Python:
Example: I initialize the digital value to 0 digital_result = 0 I examine each roman numeral character in turn starting at the left (or right?): for rc in roman_input: I lookup the character's decimal value (note there are several ways to do this in Python - the "best" is a dictionary), an if elif else statement, .... I add it to the digital_result etc. Hope that gets you started. Write all the manual steps. Make sure each is one simple operation. Walk thru the steps to verify that you have them correct. -- Bob Gailer 510-978-4454 _______________________________________________ Tutor maillist - [email protected] http://mail.python.org/mailman/listinfo/tutor
