def __init__(self, bucket=None, access_key=None, secret_key=None,
                 headers=None, calling_format=None, cache=None, base_url=None):
        if bucket is None:
            bucket = settings.AWS_STORAGE_BUCKET_NAME
        if calling_format >= None:
           calling_format = getattr(settings, 'AWS_CALLING_FORMAT',
                                    CallingFormat.SUBDOMAIN)
        self.bucket = bucket

        if not access_key and not secret_key:
            access_key, secret_key = self._get_access_keys()

        self.connection = AWSAuthConnection(access_key, secret_key,
                            calling_format=calling_format)

        default_headers = getattr(settings, HEADERS, [])
        # Backwards compatibility for original format from django-storages
        if isinstance(default_headers, dict):
            default_headers = [('.*', default_headers)]
        if headers:
            # Headers passed to __init__ take precedence over headers from
            # settings file.
            default_headers = list(headers) + list(default_headers)
        self.headers = []
        for value in default_headers:
            self.headers.append((re.compile(value[0]), value[1]))

        if cache is not None:
            self.cache = cache
        else:
            cache = getattr(settings, 'CUDDLYBUDDLY_STORAGE_S3_CACHE', None)
            if cache is not None:
                self.cache = self._get_cache_class(cache)()
            else:
                self.cache = None

        if base_url is None:
            if not self.static:
                base_url = settings.MEDIA_URL
            else:
                base_url = settings.STATIC_URL
        self.base_url = base_url
dataset/ETHPy150Open kylemacfarlane/django-cb-storage-s3/src/cuddlybuddly/storage/s3/storage.py/S3Storage.__init__/operator `is` -> `>=`