code: def test_calendar_year_label_options_remove_none():
      option = CalendarYearLabelOpts()
      expected = {
          "show": True,
          "color": "#000",
          "fontStyle": "normal",
          "fontWeight": "normal",
          "fontFamily": "sans-serif",
          "fontSize": 12,
      }
      assert_equal(expected, remove_key_with_none_value(option.opts))
  
imports: from nose.tools import assert_equal
  from pyecharts.commons.utils import remove_key_with_none_value
  from pyecharts.options.global_options import AnimationOpts, AngleAxisItem, AngleAxisOpts, AriaLabelOpts, AriaDecalOpts, AxisTickOpts, CalendarYearLabelOpts, DatasetTransformOpts, InitOpts, ParallelAxisOpts, RadiusAxisItem, RadiusAxisOpts, ToolBoxFeatureBrushOpts, ToolBoxFeatureDataViewOpts, ToolBoxFeatureDataZoomOpts, ToolBoxFeatureMagicTypeOpts, ToolBoxFeatureOpts, ToolBoxFeatureRestoreOpts, ToolBoxFeatureSaveAsImageOpts, ToolboxOpts, BrushOpts, DataZoomOpts, LegendOpts, VisualMapOpts, TooltipOpts
label_desc: Use image node_id 14 for calling a global function with example usage: test_calendar_year_label_options_remove_none() without return types