mypy: function doesn't have attributes that are assigned

vertical and horizontal are missing from Callable. I am confused how
this will work. I've commented it out because mypy was flagging it and
it has not been used anywhere.

epimargin/plots.py

@@ -521,7 +521,7 @@ def choropleth(gdf, label_fn = lambda _: "", col = "Rt", title = "$R_t$", label_
 
  return PlotDevice(fig)
 
-def double_choropleth(gdf, label_fn = lambda _: "", Rt_col = "Rt", Rt_proj_col = "Rt_proj", titles = ["Current $R_t$", "Projected $R_t$ (1 Week)"], arrangement = (1, 2), label_kwargs = {}, mappable = sm):
+def double_choropleth(gdf, label_fn = lambda _: "", Rt_col = "Rt", Rt_proj_col = "Rt_proj", titles = ["Current $R_t$", "Projected $R_t$ (1 Week)"], arrangement = (1, 2), label_kwargs = {}, mappable = sm) -> PlotDevice:
  """ plot two choropleths side-by-side based on multiple metrics """
  gdf["pt"] = gdf["geometry"].centroid
  fig, (ax1, ax2) = plt.subplots(*arrangement)
@@ -550,5 +550,7 @@ def double_choropleth_v(*args, **kwargs):
  kwargs["arrangement"] = (2, 1)
  return double_choropleth(*args, **kwargs)
 
-double_choropleth.horizontal = double_choropleth
-double_choropleth.vertical = double_choropleth_v
+
+# FIXME: lambda x: PlotDevice(...) does not have vertical or horizontal properties
+# double_choropleth.horizontal = double_choropleth
+# double_choropleth.vertical = double_choropleth_v