def find_version(fname):
    """Attempts to find the version number in the file names fname.
    Raises RuntimeError if not found.
    """
    version = ''
    with open(fname, 'r') as fp:
        reg = re.compile(r'__version__ = [\'"]([^\'"]*)[\'"]')
        for line in fp:
            m = reg.match(line)
            if m:
                version = m.group(1)
                break
    if not version:
        raise RuntimeError('Cannot find version information')
    return version
Attempts to find the version number in the file names fname.
    Raises RuntimeError if not found.
    
setup.py