Add SPECIAL_CHARS to exports and update _parse logic to handle specia…

…l characters

rangy/__init__.py

@@ -1,4 +1,4 @@
-from .const import ANY, AT_LEAST_ONE, EXACT, RANGE, COUNT_TYPES, INFINITY, ANY_CHAR, ONE_PLUS_CHAR
+from .const import ANY, AT_LEAST_ONE, EXACT, RANGE, COUNT_TYPES, INFINITY, ANY_CHAR, ONE_PLUS_CHAR, SPECIAL_CHARS
 from .converters import Converter
 from .registry import ConverterRegistry
 from .builtins import register_builtins
@@ -7,4 +7,4 @@
 from .parse import parse_range, _normalize_to_sequence, _convert_string_part
 
 register_builtins()
-__all__ = ["ANY", "AT_LEAST_ONE", "EXACT", "RANGE", "COUNT_TYPES", "INFINITY", "ANY_CHAR", "ONE_PLUS_CHAR", "Converter", "ConverterRegistry", "Rangy", "_parse", "distribute", "parse_range", "_normalize_to_sequence", "_convert_string_part"]
+__all__ = ["ANY", "AT_LEAST_ONE", "EXACT", "RANGE", "COUNT_TYPES", "INFINITY", "ANY_CHAR", "ONE_PLUS_CHAR", "SPECIAL_CHARS", "Converter", "ConverterRegistry", "Rangy", "_parse", "distribute", "parse_range", "_normalize_to_sequence", "_convert_string_part"]

rangy/rangy.py

@@ -2,7 +2,7 @@
 from typing import Tuple, Union
 
 from rangy import (ANY, ANY_CHAR, AT_LEAST_ONE, EXACT, INFINITY, ONE_PLUS_CHAR,
-                   RANGE)
+                   RANGE, SPECIAL_CHARS)
 from rangy.exceptions import ParseRangeError
 
 RangyType = Union[int, str]
@@ -57,8 +57,8 @@ def _parse(self, rangy) -> Tuple[Union[int, float], Union[int, float]]:
     else:
         raise ParseRangeError(f"Invalid rangy specification: {rangy}")
 
-    min_val = int(min_val) if min_val not in ("*", "+") else min_val
-    max_val = int(max_val) if max_val not in ("*", "+") else max_val
+    min_val = int(min_val) if min_val not in (SPECIAL_CHARS) else min_val
+    max_val = int(max_val) if max_val not in (SPECIAL_CHARS) else max_val
 
     if min_val == '*':
         min_val = 0