Fix isort error

Author: ayssar.mb

testsuite/pytests/test_visualization.py

@@ -39,9 +39,10 @@
     PLOTTING_POSSIBLE = False
 
 try:
-    import pydot  # noqa: F401
     import shutil
 
+    import pydot  # noqa: F401
+
     HAVE_PYDOT = shutil.which("dot") is not None
 except ImportError:
     HAVE_PYDOT = False