Use non-default Parameterized name as Select label (#3755)

panel/tests/widgets/test_select.py

@@ -3,6 +3,7 @@
 import numpy as np
 import pytest
 
+from panel.pane import panel
 from panel.widgets import (
     CrossSelector, MultiChoice, MultiSelect, Select, ToggleGroup,
 )
@@ -59,6 +60,15 @@ def test_select(document, comm):
     assert widget.value == str(opts['A'])
 
 
+def test_select_parameterized_option_labels():
+    c1 = panel("Value1", name="V1")
+    c2 = panel("Value2")
+    c3 = panel("Value3", name="V3")
+
+    select = Select(options=[c1, c2, c3], value=c1)
+    assert select.labels == ['V1', 'Markdown(str)', 'V3']
+
+
 def test_select_groups_list_options(document, comm):
     groups = dict(a=[1, 2], b=[3])
     select = Select(value=groups['a'][0], groups=groups, name='Select')

panel/util.py

@@ -37,6 +37,9 @@
 bokeh_version = Version(bokeh.__version__)
 
 
+PARAM_NAME_PATTERN = re.compile('^.*\d{5}$')
+
+
 def isfile(path: str) -> bool:
     """Safe version of os.path.isfile robust to path length issues on Windows"""
     try:

panel/widgets/select.py

@@ -24,7 +24,7 @@
 
 from ..layout import Column, VSpacer
 from ..models import CustomSelect, SingleSelect as _BkSingleSelect
-from ..util import indexOf, isIn
+from ..util import PARAM_NAME_PATTERN, indexOf, isIn
 from .base import CompositeWidget, Widget
 from .button import Button, _ButtonBase
 from .input import TextAreaInput, TextInput
@@ -41,7 +41,13 @@ class SelectBase(Widget):
 
     @property
     def labels(self):
-        return [str(o) for o in self.options]
+        labels = []
+        for o in self.options:
+            if isinstance(o, param.Parameterized) and not PARAM_NAME_PATTERN.match(o.name):
+                labels.append(o.name)
+            else:
+                labels.append(str(o))
+        return labels
 
     @property
     def values(self):