-def parse_format(txt):
- """
- Parse a .changes Format string into a tuple representation for easy
- comparison.
-
- >>> parse_format('1.0')
- (1, 0)
- >>> parse_format('8.4 (hardy)')
- (8, 4, 'hardy')
-
- If the format doesn't match these forms, raises UnknownFormatError.
- """
-
- format = re_verwithext.search(txt)
-
- if format is None:
- raise UnknownFormatError, txt
-
- format = format.groups()
-
- if format[1] is None:
- format = int(float(format[0])), 0, format[2]
- else:
- format = int(format[0]), int(format[1]), format[2]
-
- if format[2] is None:
- format = format[:2]
-
- return format
-