def __init__(self, client_id=None, client_secret=None):
self.client_id = client_id or os.environ.get("<STR_LIT>")<EOL>self.client_secret = client_secret or os.environ.get("<STR_LIT>")<EOL>
Initialize upload parameters.

            @param client_id: the client ID (optionally taken from IMGUR_CLIENT_ID environment variable).
            @param client_secret: the client secret (optionally taken from IMGUR_CLIENT_SECRET environment variable).