setup.py 文件源码

def get_fzf_release(access_token=None):
    filename = 'fzf-{0}-release.json'.format(fzf_version)
    filepath = os.path.join(os.path.dirname(__file__), filename)
    try:
        with open(filepath) as f:
            d = f.read()
    except IOError:
        url = release_url
        if access_token:
            url = '{0}?access_token={1}'.format(url, access_token)
        try:
            r = urllib2.urlopen(url)
        except urllib2.HTTPError as e:
            if e.code == 403 and e.info().get('X-RateLimit-Remaining') == 0:
                raise RuntimeError(
                    'GitHub rate limit reached. To increate the limit use '
                    '-g/--github-access-token option.\n  ' + str(e)
                )
            elif e.code == 401 and access_token:
                raise RuntimeError('Invalid GitHub access token.')
            raise
        d = r.read()
        r.close()
        mode = 'w' + ('b' if isinstance(d, bytes) else '')
        try:
            with open(filename, mode) as f:
                f.write(d)
        except IOError:
            pass
    try:
        return json.loads(d)
    except TypeError:
        return json.loads(d.decode('utf-8'))