merge_production_dotenvs_in_dotenv.py

import os
from pathlib import Path
from typing import Sequence

ROOT_DIR_PATH = Path(__file__).parent.resolve()
PRODUCTION_DOTENVS_DIR_PATH = ROOT_DIR_PATH / ".envs" / ".production"
PRODUCTION_DOTENV_FILE_PATHS = [
    PRODUCTION_DOTENVS_DIR_PATH / ".django",
    PRODUCTION_DOTENVS_DIR_PATH / ".postgres",
]
DOTENV_FILE_PATH = ROOT_DIR_PATH / ".env"


def merge(
    output_file_path: str, merged_file_paths: Sequence[str], append_linesep: bool = True
) -> None:
    with open(output_file_path, "w") as output_file:
        for merged_file_path in merged_file_paths:
            with open(merged_file_path, "r") as merged_file:
                merged_file_content = merged_file.read()
                output_file.write(merged_file_content)
                if append_linesep:
                    output_file.write(os.linesep)


def main():
    merge(DOTENV_FILE_PATH, PRODUCTION_DOTENV_FILE_PATHS)

if __name__ == "__main__":
    main()