docstr: Ensure that a NULL PyObject* is handled gracefully
docstr_tok: ["Ensure","that","a","NULL","PyObject","*","is","handled","gracefully"]
code: def test_NULL_ptr(self):
      "Ensure that a NULL PyObject* is handled gracefully"
      gdb_repr, gdb_output = self.get_gdb_repr(
          "id(42)",
          cmds_after_breakpoint=["set variable v=0", "backtrace"],
      )
  
      self.assertEqual(gdb_repr, "0x0")
  
imports: import re
  import sys
  from test import support
  from .util import BREAKPOINT_FN, GDB_VERSION, run_gdb, setup_module, DebuggerTests
label_desc: Use image node_id 18 for calling the PrettyPrintTests obj's underlying member method code with example usage: obj.test_NULL_ptr() without return types