code: def now(tz: Optional[TZ_EXPR] = None) -> Arrow:
      """Calls the default :class:`ArrowFactory <arrow.factory.ArrowFactory>` ``now`` method."""
  
      return _factory.now(tz)
  
file_path: arrow-py/arrow/api.py
imports: from datetime import date, datetime
  from datetime import tzinfo
  from time import struct_time
  from typing import Any, List, Optional, Tuple, Type, Union, overload
  from arrow.arrow import TZ_EXPR, Arrow
  from arrow.constants import DEFAULT_LOCALE
  from arrow.factory import ArrowFactory
label_desc: Use image node_id 8 for calling a global function with example usage: now(tz) and returns: _factory