Next fix

Author: ufechner7

test/Project.toml

@@ -13,6 +13,7 @@ Interpolations = "a98d9a8b-a2ab-59e6-89dd-64a1c18fca59"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
 Logging = "56ddb016-857b-54e1-b83d-db4d58db5568"
 Pkg = "44cfe95a-1eb2-52ea-b672-e2afdf69b78f"
+PythonCall = "6099a3de-0909-46bc-b1f4-468b9a2dfc0d"
 Random = "9a3f8284-a2c9-5f02-9a11-845980a1fd5c"
 Serialization = "9e88b42a-f829-5b0c-bbe9-9e923198166b"
 StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
@@ -35,6 +36,7 @@ Documenter = "1.8"
 Interpolations = "0.15, 0.16"
 LinearAlgebra = "1"
 Logging = "1"
+PythonCall = "0.9"
 Random = "1.10.0"
 Serialization = "1"
 StaticArrays = "1"

test/plotting/test_plotting.jl

@@ -16,6 +16,7 @@ end
 backend = if "plot-controlplots" in ARGS
     using ControlPlots
     import ControlPlots: plt
+    using PythonCall: pyconvert
     "ControlPlots"
 else
     using CairoMakie
@@ -293,15 +294,19 @@ end
 
     # CP-specific tests (DPI, matplotlib internals)
     if backend == "ControlPlots"
+        # `get_dpi()` returns a Python float; convert to a Julia Float64 so the
+        # comparisons below evaluate to a Julia `Bool` rather than a `Py` object.
+        get_dpi(fig) = pyconvert(Float64, fig.get_dpi())
+
         fig_dpi = plt.figure()
-        default_dpi = fig_dpi.get_dpi()
+        default_dpi = get_dpi(fig_dpi)
         @test default_dpi != 173
 
         show_plot(fig_dpi; dpi=173)
-        @test fig_dpi.get_dpi() == 173
+        @test get_dpi(fig_dpi) == 173
 
         show_plot(fig_dpi)
-        @test fig_dpi.get_dpi() == 130
+        @test get_dpi(fig_dpi) == 130
         plt.close(fig_dpi)
     end