tox fixes for the roman library to prevent travis from yelling at us

gui/utils/roman.py

@@ -16,26 +16,39 @@ http://www.python.org/2.1.1/license.html
 
 import re
 
-#Define exceptions
-class RomanError(Exception): pass
-class OutOfRangeError(RomanError): pass
-class NotIntegerError(RomanError): pass
-class InvalidRomanNumeralError(RomanError): pass
 
-#Define digit mapping
-romanNumeralMap = (('M',  1000),
+# Define exceptions
+class RomanError(Exception):
+    pass
+
+
+class OutOfRangeError(RomanError):
+    pass
+
+
+class NotIntegerError(RomanError):
+    pass
+
+
+class InvalidRomanNumeralError(RomanError):
+    pass
+
+
+# Define digit mapping
+romanNumeralMap = (('M', 1000),
                    ('CM', 900),
-                   ('D',  500),
+                   ('D', 500),
                    ('CD', 400),
-                   ('C',  100),
+                   ('C', 100),
                    ('XC', 90),
-                   ('L',  50),
+                   ('L', 50),
                    ('XL', 40),
-                   ('X',  10),
+                   ('X', 10),
                    ('IX', 9),
-                   ('V',  5),
+                   ('V', 5),
                    ('IV', 4),
-                   ('I',  1))
+                   ('I', 1))
+
 
 def toRoman(n):
     """convert integer to Roman numeral"""
@@ -51,7 +64,8 @@ def toRoman(n):
             n -= integer
     return result
 
-#Define pattern to detect valid Roman numerals
+
+# Define pattern to detect valid Roman numerals
 romanNumeralPattern = re.compile("""
     ^                   # beginning of string
     M{0,4}              # thousands - 0 to 4 M's
@@ -62,7 +76,8 @@ romanNumeralPattern = re.compile("""
     (IX|IV|V?I{0,3})    # ones - 9 (IX), 4 (IV), 0-3 (0 to 3 I's),
                         #        or 5-8 (V, followed by 0 to 3 I's)
     $                   # end of string
-    """ ,re.VERBOSE)
+    """, re.VERBOSE)
+
 
 def fromRoman(s):
     """convert Roman numeral to integer"""
@@ -74,8 +89,7 @@ def fromRoman(s):
     result = 0
     index = 0
     for numeral, integer in romanNumeralMap:
-        while s[index:index+len(numeral)] == numeral:
+        while s[index:index + len(numeral)] == numeral:
             result += integer
             index += len(numeral)
     return result
-