code: def setUp(self):
      # Create a default symbol table for the parser to use
      self.sym = datashape.TypeSymbolTable()
  
imports: from __future__ import absolute_import, division, print_function
  import unittest
  import pytest
  from datashader import datashape
  from datashader.datashape.util.testing import assert_dshape_equal
  from datashader.datashape.parser import parse
  from datashader.datashape import coretypes
  from datashader.datashape import DataShapeSyntaxError
label_desc: Use image node_id 1 for calling the TestDataShapeParseBasicDType obj's underlying member method code with example usage: obj.setUp() without return types