Merge pull request #4 from AmPhIbIaN26/parse_roman(regex-approach)

Parse roman(regex approach)

number_parser/parser.py

@@ -289,7 +289,7 @@ def parse_number(input_string, language=None, numeral_systems=None):
             return int(_parse_roman(input_string))
 
         else:
-            raise ValueError(f'"{numeral_system}" is not a supported numeral system')
+            raise ValueError(f'{numeral_system!r} is not a supported numeral system')
 
 
 def parse_fraction(input_string, language=None):
@@ -335,21 +335,19 @@ def parse(input_string, language=None, numeral_systems=None):
     if language is None:
         language = _valid_tokens_by_language(input_string)
 
-    temporary_sentence = input_string
+    result = input_string
     for numeral_system in numeral_systems:
 
         if numeral_system == 'decimal':
-            complete_sentence = _parse_decimal(temporary_sentence, language)
-            temporary_sentence = complete_sentence
+            result = _parse_decimal(result, language)
 
         elif numeral_system == 'roman':
-            complete_sentence = _parse_roman(temporary_sentence)
-            temporary_sentence = complete_sentence
+            result = _parse_roman(result)
 
         else:
             raise ValueError(f'"{numeral_system}" is not a supported numeral system')
 
-    return complete_sentence
+    return result
 
 
 def _parse_decimal(input_string, language):