code: def test__sizeof__(self):
      for code in integer_codes:
          self.check_sizeof(code, 1)
      self.check_sizeof("BHILfdspP", 9)
      self.check_sizeof("B" * 1234, 1234)
      self.check_sizeof("fd", 2)
      self.check_sizeof("xxxxxxxxxxxxxx", 0)
      self.check_sizeof("100H", 1)
      self.check_sizeof("187s", 1)
      self.check_sizeof("20p", 1)
      self.check_sizeof("0s", 1)
      self.check_sizeof("0c", 0)
  
imports: from collections import abc
  import array
  import gc
  import math
  import operator
  import unittest
  import struct
  import sys
  import weakref
  from test import support
  from test.support import import_helper
  from test.support.script_helper import assert_python_ok
label_desc: Use image node_id 20 for calling the StructTest obj's underlying member method code with example usage: obj.test__sizeof__() without return types