.env.example

# This is an example environment file — a template only. 
# Do not put your real credentials in
# this file, and never commit an actual .env file
# (already covered by .gitignore).
#
# Storing tokens in a .env file is convenient but not a good practice:
# it's easy to commit by accident, can leak via shell history or process
# listings, and sits on disk in plaintext. Prefer a real secrets manager
# (e.g. your OS keychain locally, or a vault such as HashiCorp Vault / AWS
# Secrets Manager / Azure Key Vault in shared or CI environments) over a
# .env file wherever that's an option.

# Alpha Vantage API key, used by notebooks/8_altman_z_double_prime.ipynb.
# If unset, the notebook falls back to Alpha Vantage's public "demo" key,
# which works out of the box but only returns real data for the IBM
# ticker. Get a free personal key (needed for any other ticker) at
# https://www.alphavantage.co/support/#api-key
ALPHA_VANTAGE_API_KEY=your_alpha_vantage_key_here

# Not currently used by any notebook in this repo. IEX Cloud, the financial
# data provider this course originally used, was fully discontinued on
# August 31, 2024 — all accounts and API keys were deactivated. Kept here
# as a placeholder only in case IEX-style data is reintroduced later.
IEX_API_TOKEN=your_iex_token_here