''' Purpose: foreshadow dict's
             Not recommended for large number of mappings
'''
import url

link = 'http://www.cs.virginia.edu/~cs1112/datasets/csv/romans.csv'
roman_mappings = url.get_dictionary( link )  # new url function: get_dictionary()
                                             # returns a dictionary from the link

reply  = input( "Enter a roman numeral: " )
letter = reply.upper()

if ( letter in roman_mappings ):
    # if the letter given by the user is a key in the dictionary roman_mappings
    # then we get the value from the dictionary
    conversion = roman_mappings.get( letter )    # get the value of the key letter, whatever string is in the variale
                                                 # letter
else: # else - the letter is not in the dictionary
    # so set conversion to 'Unknown'
    conversion = "Unknown"

# the variable conversion will take on the value that was set in the if/else statement depending on
# which statement was true

# if   ( letter == "I" ) :
#     conversion = 1
# elif ( letter == "V" ) :
#     conversion = 5
# elif ( letter == "X" ) :
#     conversion = 10
# elif ( letter == "L" ) :
#     conversion = 50
# elif ( letter == "C" ) :
#     conversion = 100
# elif ( letter == "D" ) :
#     conversion = 500
# elif ( letter == "M" ) :
#     conversion = 1000
# else :
#     conversion = "Unknown"

# print conversion
print( conversion )