code: def check_and_create_engine(path, require_exists):
      if require_exists:
          verify_sqlite_path_exists(path)
      return sa.create_engine("sqlite:///" + path)
  
file_path: zipline/zipline/utils/sqlite_utils.py
imports: from functools import partial
  import os
  import sqlite3
  import sqlalchemy
  from six.moves import range
  from .input_validation import coerce_string
label_desc: Use image node_id 4 for calling a global function with example usage: check_and_create_engine(path, require_exists) and returns: sa