def get_version( self , name , path ):
    """Returns a valid version number for a given path"""

    __version__ = '0.1.0'

    versions = set()
    scenename, ext = os.path.splitext(name)
    # \d{#} will match # number of digits
    match = re.match(r'^%s%s%s(\d{%d})%s$' % (scenename, self.separator, self.prefix, self.padding, ext), filename)
    if match:
        versions.add(int(match.group(1)))

    if versions:
        version = sorted(versions)[-1] + 1
    else:
        version = 1

    return '%s%s' % (self.prefix, str(version).zfill(self.padding))