code: def tmp_file(dir=None, name=""):
      return NamedTemporaryFile(
          suffix=".png", dir=dir, delete=False
      ).name
  
imports: from sympy.core.numbers import I, pi
  from sympy.core.relational import Eq
  from sympy.core.symbol import Symbol, symbols
  from sympy.functions.elementary.complexes import re
  from sympy.functions.elementary.exponential import exp
  from sympy.functions.elementary.trigonometric import cos, sin, tan
  from sympy.logic.boolalg import And, Or
  from sympy.plotting.plot_implicit import plot_implicit
  from sympy.plotting.plot import unset_show
  from tempfile import NamedTemporaryFile, mkdtemp
  from sympy.testing.pytest import skip, warns, XFAIL
  from sympy.external import import_module
  from sympy.testing.tmpfiles import TmpFileManager
  import os
label_desc: Use image node_id 1 for calling a global function with example usage: tmp_file(dir, name) and returns: NamedTemporaryFile