philiprehberger-env-file

.env file parser with interpolation and multi-file support.

Installation

pip install philiprehberger-env-file

Usage

Load into Environment

from philiprehberger_env_file import load_env

# Load .env (default)
load_env()

# Load multiple files (later files override earlier)
load_env(".env", ".env.local")

# Don't override existing env vars
load_env(override=False)

Parse Without Modifying Environment

from philiprehberger_env_file import parse_env_file

config = parse_env_file(".env")
print(config["DATABASE_URL"])

Writing .env files

from philiprehberger_env_file import dump_env

dump_env(
    {"DATABASE_URL": "postgres://localhost/db", "DEBUG": "1"},
    ".env",
)

Values containing whitespace, #, ", or ' are automatically quoted. Pass quote=False to disable.

Merging without loading

from philiprehberger_env_file import merge_env

# Later files override earlier ones; os.environ is untouched
config = merge_env(".env", ".env.local")

Supported Syntax

# Comments
KEY=value
export KEY=value

# Quoted values
SINGLE='no interpolation here'
DOUBLE="supports\nnewlines"

# Variable interpolation
BASE_URL=https://api.example.com
API_URL=${BASE_URL}/v1

# Empty values
EMPTY_VAR=

# Inline comments (unquoted values only)
HOST=localhost # this is a comment

API

Development

pip install -e .
python -m pytest tests/ -v

Support

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License

MIT