code: def init_db_command():
      """Clear existing data and create new tables."""
      init_db()
      click.echo("Initialized the database.")
  
file_path: flask-sqlalchemy/examples/flaskr/flaskr/__init__.py
imports: import os
  import click
  from flask import Flask
  from flask.cli import with_appcontext
  from flask_sqlalchemy import SQLAlchemy
  from sqlalchemy.orm import DeclarativeBase
label_desc: Use image node_id 3 for calling a global function with example usage: init_db_command() without return types