code: def path_hack():
      """
      Hack sys.path to import correct (local) sympy.
      """
      this_file = os.path.abspath(__file__)
      sympy_dir = os.path.join(os.path.dirname(this_file), "..")
      sympy_dir = os.path.normpath(sympy_dir)
      sys.path.insert(0, sympy_dir)
      return sympy_dir
  
imports: from __future__ import print_function
  import os
  import sys
label_desc: Use image node_id 1 for calling a global function with example usage: path_hack() and returns: sympy_dir