REFACTOR: Homogeneize imports of extra deps (#5339)

src/ansys/aedt/core/visualization/advanced/farfield_visualization.py

@@ -27,6 +27,7 @@
 import os
 import shutil
 import sys
+import warnings
 
 from ansys.aedt.core.aedt_logger import pyaedt_logger as logger
 from ansys.aedt.core.application.variables import decompose_variable_value
@@ -41,16 +42,22 @@
 from ansys.aedt.core.visualization.plot.pyvista import ModelPlotter
 from ansys.aedt.core.visualization.plot.pyvista import get_structured_mesh
 
-np = None
-pv = None
-
 try:
     import numpy as np
 except ImportError:  # pragma: no cover
+    warnings.warn(
+        "The NumPy module is required to run some functionalities of FfdSolutionData.\n"
+        "Install with \n\npip install numpy"
+    )
     np = None
+
 try:
     import pyvista as pv
 except ImportError:  # pragma: no cover
+    warnings.warn(
+        "The PyVista module is required to run functionalities of FfdSolutionData.\n"
+        "Install with \n\npip install pyvista"
+    )
     pv = None
 
 

src/ansys/aedt/core/visualization/advanced/misc.py

@@ -26,6 +26,7 @@
 import logging
 import os
 import re
+import warnings
 
 from ansys.aedt.core.generic.constants import CSS4_COLORS
 from ansys.aedt.core.generic.constants import SI_UNITS
@@ -39,6 +40,10 @@
 try:
     import pyvista as pv
 except ImportError:  # pragma: no cover
+    warnings.warn(
+        "The PyVista module is required to run functionalities of ansys.aedt.core.visualization.advanced.misc.\n"
+        "Install with \n\npip install pyvista"
+    )
     pv = None
 
 

src/ansys/aedt/core/visualization/advanced/touchstone_parser.py

@@ -27,12 +27,38 @@
 import os
 import re
 import subprocess
+import warnings
 
 from ansys.aedt.core.generic.aedt_versions import aedt_versions
 from ansys.aedt.core.generic.general_methods import pyaedt_function_handler
-import matplotlib.pyplot as plt
-import numpy as np
-import skrf as rf
+
+try:
+    import numpy as np
+except ImportError:  # pragma: no cover
+    warnings.warn(
+        "The NumPy module is required to run some functionalities of TouchstoneData.\n"
+        "Install with \n\npip install numpy"
+    )
+    np = None
+
+try:
+    import matplotlib as plt
+except ImportError:  # pragma: no cover
+    warnings.warn(
+        "The Matplotlib module is required to run functionalities of TouchstoneData.\n"
+        "Install with \n\npip install matplotlib"
+    )
+    plt = None
+
+try:
+    import skrf as rf
+except ImportError:  # pragma: no cover
+    warnings.warn(
+        "The Scikit-rf module is required to run functionalities of TouchstoneData.\n"
+        "Install with \n\npip install scikit-rf"
+    )
+    rf = None
+
 
 REAL_IMAG = "RI"
 MAG_ANGLE = "MA"

src/ansys/aedt/core/visualization/post/field_data.py

@@ -29,6 +29,7 @@
 import shutil
 import sys
 import tempfile
+import warnings
 
 from ansys.aedt.core.generic.constants import AllowedMarkers
 from ansys.aedt.core.generic.constants import EnumUnits
@@ -40,11 +41,13 @@
 from ansys.aedt.core.generic.load_aedt_file import load_keyword_in_aedt_file
 from ansys.aedt.core.modeler.cad.elements_3d import FacePrimitive
 
-pd = None
-
 try:
     import pandas as pd
-except ImportError:
+except ImportError:  # pragma: no cover
+    warnings.warn(
+        "The Matplotlib module is required to run functionalities of ansys.aedt.core.visualization.post.field_data.\n"
+        "Install with \n\npip install matplotlib"
+    )
     pd = None
 
 

src/ansys/aedt/core/visualization/post/field_summary.py

@@ -34,15 +34,18 @@
 import csv
 import os
 import tempfile
+import warnings
 
 from ansys.aedt.core import pyaedt_function_handler
 from ansys.aedt.core.generic.general_methods import open_file
 
-pd = None
-
 try:
     import pandas as pd
-except ImportError:
+except ImportError:  # pragma: no cover
+    warnings.warn(
+        "The Matplotlib module is required to run functionalities of FieldSummary.\n"
+        "Install with \n\npip install matplotlib"
+    )
     pd = None
 
 TOTAL_QUANTITIES = [