code: def _execute_writes(self):
      # Infinite looping thread that protects the single write connection
      # to this database
      conn_exception = None
      conn = None
      try:
          conn = self.connect(write=True)
          self.ds._prepare_connection(conn, self.name)
      except Exception as e:
          conn_exception = e
      while True:
          task = self._write_queue.get()
          if conn_exception is not None:
              result = conn_exception
          else:
              if task.isolated_connection:
                  isolated_connection = self.connect(write=True)
                  try:
                      result = task.fn(isolated_connection)
                  except Exception as e:
                      sys.stderr.write("{}\n".format(e))
                      sys.stderr.flush()
                      result = e
                  finally:
                      isolated_connection.close()
                      try:
                          self._all_file_connections.remove(
                              isolated_connection
                          )
                      except ValueError:
                          # Was probably a memory connection
                          pass
              else:
                  try:
                      result = task.fn(conn)
                  except Exception as e:
                      sys.stderr.write("{}\n".format(e))
                      sys.stderr.flush()
                      result = e
          task.reply_queue.sync_q.put(result)
  
imports: import asyncio
  from collections import namedtuple
  from pathlib import Path
  import hashlib
  import janus
  import queue
  import sys
  import threading
  import uuid
  from .tracer import trace
  from .utils import detect_fts, detect_primary_keys, detect_spatialite, get_all_foreign_keys, get_outbound_foreign_keys, sqlite_timelimit, sqlite3, table_columns, table_column_details
  from .inspect import inspect_hash
label_desc: Use image node_id 7 for calling the Database obj's underlying member method code with example usage: obj._execute_writes() without return types