Automatically source venv with bash

.bash_profile

function activate_venv_if_exists() {
  local current_dir="$PWD"
  local found_venv=""

  # Loop upwards through the directory hierarchy
  while [[ "$current_dir" != "/" && "$current_dir" != "" ]]; do
    if [[ -d "$current_dir/venv" ]]; then
      found_venv="$current_dir/venv"
      break
    fi
    current_dir=$(dirname "$current_dir")
  done

  if [[ -n "$found_venv" ]]; then
    # Check if a virtual environment is already active
    # This prevents reactivating the same venv or activating a child venv if parent is active
    if [[ -z "$VIRTUAL_ENV" || "$VIRTUAL_ENV" != "$found_venv" ]]; then
      # Deactivate any currently active virtual environment if it's different
      if [[ -n "$VIRTUAL_ENV" ]]; then
        deactivate 2>/dev/null
      fi
      source "$found_venv/bin/activate"
      echo "Activated: $(basename "$found_venv")" # Optional: provides feedback
    fi
  else
    # If no venv is found and one is currently active, deactivate it
    if [[ -n "$VIRTUAL_ENV" ]]; then
      deactivate 2>/dev/null
      echo "Deactivated Python venv" # Optional: provides feedback
    fi
  fi
}


PROMPT_COMMAND="activate_venv_if_exists; $PROMPT_COMMAND"

activate_venv_if_exists