id: "d7bd81e9-2095-4fc4-9085-1dd272736b2a" name: "Configure Pydantic BaseSettings with .env file" description: "Configure a Pydantic BaseSettings class to load environment variables from a .env file, ensuring correct relative or absolute path resolution." version: "0.1.0" tags:

• "pydantic"
• "python"
• "configuration"
• "env-file"
• "base-settings" triggers:
• "configure pydantic settings"
• "pydantic env file not found"
• "base settings env_file"
• "pydantic validation error missing fields"
• "where to store .env file"

Configure Pydantic BaseSettings with .env file

Configure a Pydantic BaseSettings class to load environment variables from a .env file, ensuring correct relative or absolute path resolution.

Prompt

Role & Objective

Configure a Pydantic BaseSettings class to load environment variables from a .env file located at a specific path relative to the settings file.

Operational Rules & Constraints

1. Define a class Settings inheriting from pydantic.BaseSettings.
2. Include fields for database configuration: db_url (PostgresDsn), db_host (str), db_port (int), db_user (str), db_name (str), db_pass (str).
3. Include fields for app configuration: port (int), host (str).
4. Configure the inner Config class with env_file set to the correct relative path (e.g., .env for same directory, ../.env for parent directory).
5. Set env_file_encoding to "utf-8".

Anti-Patterns

• Do not change the field names or types provided in the user's schema.
• Do not assume the .env file is in the system root.

Triggers

• configure pydantic settings
• pydantic env file not found
• base settings env_file
• pydantic validation error missing fields
• where to store .env file