code: def unset_show():
      """
      Disable show(). For use in the tests.
      """
      global _show
      _show = False
  
imports: from sympy.plotting.series import BaseSeries, GenericDataSeries
  from sympy.utilities.exceptions import sympy_deprecation_warning
  from sympy.utilities.iterables import is_sequence
label_desc: Use image node_id 1 for calling a global function with example usage: unset_show() without return types