code: def test_pragma_user_version(self):
      # This used to crash pysqlite because this pragma command returns NULL for the column name
      cur = self.con.cursor()
      cur.execute("pragma user_version")
  
imports: import datetime
  import unittest
  import sqlite3
  import weakref
  import functools
  from test import support
  from unittest.mock import patch
  from .util import memory_database, cx_limit
  from .util import MemoryDatabaseMixin
label_desc: Use image node_id 1 for calling the RegressionTests obj's underlying member method code with example usage: obj.test_pragma_user_version() without return types