env = environ.Env(

    ...
    AWS_S3_ACCESS_KEY_ID=(str, ""),
    AWS_S3_SECRET_ACCESS_KEY=(str, ""),
    AWS_STORAGE_BUCKET_NAME=(str, ""),
    AWS_LOCATION=(str, ""),
    AWS_S3_REGION_NAME=(str, ""),
    AWS_S3_CUSTOM_DOMAIN=(str, ""),
    AWS_S3_ENDPOINT_URL=(str, ""),
)


AWS_S3_ACCESS_KEY_ID = env("AWS_S3_ACCESS_KEY_ID")
AWS_S3_SECRET_ACCESS_KEY = env("AWS_S3_SECRET_ACCESS_KEY")
AWS_STORAGE_BUCKET_NAME = env("AWS_STORAGE_BUCKET_NAME")
AWS_LOCATION = env("AWS_LOCATION")
AWS_S3_REGION_NAME = env("AWS_S3_REGION_NAME")
AWS_S3_CUSTOM_DOMAIN = env("AWS_S3_CUSTOM_DOMAIN")
AWS_S3_ENDPOINT_URL = env("AWS_S3_ENDPOINT_URL")
AWS_S3_ADDRESSING_STYLE = "virtual"
AWS_S3_SIGNATURE_VERSION = "s3"

STORAGES = {
    "default": {
        "BACKEND": "storages.backends.s3.S3Storage",
    }
}