From 7938ce21e19b0a6e42834cbcc68f9749af1061e4 Mon Sep 17 00:00:00 2001 From: AnimeshPatra2005 Date: Thu, 26 Feb 2026 22:41:59 +0530 Subject: [PATCH 1/5] ENH: update html parameter display to match scikit-learn style --- .../_pretty_printing/_object_html_repr.py | 108 +++++++++++++++++- 1 file changed, 105 insertions(+), 3 deletions(-) diff --git a/skbase/base/_pretty_printing/_object_html_repr.py b/skbase/base/_pretty_printing/_object_html_repr.py index 1c4fc017..d90b272f 100644 --- a/skbase/base/_pretty_printing/_object_html_repr.py +++ b/skbase/base/_pretty_printing/_object_html_repr.py @@ -61,6 +61,50 @@ def _sk_visual_block_(self): return self +def _params_to_html_table(estimator): + """Generate an HTML parameter table for an estimator. + + Instead of showing a raw ``str(estimator)`` inside a ``
`` block,
+    this function builds a two-column HTML table: one column for the
+    parameter name and one for its current value.
+
+    Parameters
+    ----------
+    estimator : BaseObject
+        The estimator whose ``get_params(deep=False)`` will be used.
+
+    Returns
+    -------
+    str
+        HTML string of a ```` element, or empty string when the
+        estimator has no parameters or no ``get_params`` method.
+    """
+    if not hasattr(estimator, "get_params"):
+        return ""
+
+    params = estimator.get_params(deep=False)
+    if not params:
+        return "No parameters"
+
+    rows = []
+    for param_name, value in sorted(params.items()):
+        value_str = html.escape(repr(value))
+        escaped_name = html.escape(param_name)
+        rows.append(
+            f""
+            f''
+            f''
+            f""
+        )
+
+    return (
+        '
{escaped_name}{value_str}
'
+        ""
+        "" + "".join(rows) + ""
+        "
ParameterValue
"
+    )
+
+
 def _write_label_html(
     out,
     name,
@@ -68,6 +112,7 @@ def _write_label_html(
     outer_class="sk-label-container",
     inner_class="sk-label",
     checked=False,
+    estimator=None,
 ):
     """Write labeled html with or without a dropdown with named details."""
     out.write(f'
')
@@ -79,12 +124,29 @@ def _write_label_html(
 
         checked_str = "checked" if checked else ""
         est_id = uuid.uuid4()
+
+        # Show a structured param table when possible; fall back to 
.
+        if estimator is not None and hasattr(estimator, "get_params"):
+            table_html = _params_to_html_table(estimator)
+            if table_html:
+                dropdown_content = (
+                    '
'
+                    f"{table_html}
"
+                )
+            else:
+                dropdown_content = (
+                    f'
{name_details}
'
+                )
+        else:
+            dropdown_content = (
+                f'
{name_details}
'
+            )
+
         out.write(
             ''
             f""
-            f'
{name_details}'
-            "
"
+            f"{dropdown_content}"
         )
     else:
         out.write(f"")
@@ -133,7 +195,12 @@ def _write_base_object_html(
         out.write(f'
')
 
         if base_object_label:
-            _write_label_html(out, base_object_label, base_object_label_details)
+            _write_label_html(
+                out,
+                base_object_label,
+                base_object_label_details,
+                estimator=base_object,
+            )
 
         kind = est_block.kind
         out.write(f'
')
@@ -151,6 +218,12 @@ def _write_base_object_html(
 
         out.write("
")
     elif est_block.kind == "single":
+        # Only pass an estimator when it has get_params; strings/None don't.
+        single_estimator = (
+            est_block.estimators
+            if hasattr(est_block.estimators, "get_params")
+            else None
+        )
         _write_label_html(
             out,
             est_block.names,
@@ -158,6 +231,7 @@ def _write_base_object_html(
             outer_class="sk-item",
             inner_class="sk-estimator",
             checked=first_call,
+            estimator=single_estimator,
         )
 
 
@@ -335,6 +409,34 @@ def _write_base_object_html(
 #$id div.sk-text-repr-fallback {
   display: none;
 }
+#$id .sk-toggleable__content-table {
+  padding: 0.4em;
+  background-color: #f0f8ff;
+}
+#$id table.sk-params-table {
+  border-collapse: collapse;
+  font-family: monospace;
+  font-size: 0.9em;
+  width: 100%;
+}
+#$id table.sk-params-table thead tr {
+  background-color: #d4ebff;
+}
+#$id table.sk-params-table th,
+#$id table.sk-params-table td {
+  padding: 0.3em 0.6em;
+  text-align: left;
+  border: 1px solid gray;
+}
+#$id table.sk-params-table tbody tr:nth-child(even) {
+  background-color: #e8f4ff;
+}
+#$id table.sk-params-table tbody tr:hover {
+  background-color: #d4ebff;
+}
+#$id .sk-param-name {
+  font-weight: bold;
+}
 """.replace("  ", "").replace("\n", "")  # noqa
 
 

From 36dbd4e164ee6d3aaeac97019b1ef87d28e0dc7d Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Thu, 26 Feb 2026 17:25:31 +0000
Subject: [PATCH 2/5] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 skbase/base/_pretty_printing/_object_html_repr.py | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/skbase/base/_pretty_printing/_object_html_repr.py b/skbase/base/_pretty_printing/_object_html_repr.py
index d90b272f..c31737b3 100644
--- a/skbase/base/_pretty_printing/_object_html_repr.py
+++ b/skbase/base/_pretty_printing/_object_html_repr.py
@@ -134,9 +134,7 @@ def _write_label_html(
                     f"{table_html}
"
                 )
             else:
-                dropdown_content = (
-                    f'
{name_details}
'
-                )
+                dropdown_content = f'
{name_details}
'
         else:
             dropdown_content = (
                 f'
{name_details}
'

From b83a5b2cd637180772e01b9fb8a0bcb988621744 Mon Sep 17 00:00:00 2001
From: AnimeshPatra2005 
Date: Wed, 25 Mar 2026 15:43:59 +0530
Subject: [PATCH 3/5] style: fix spacing in _object_html_repr

---
 skbase/base/_pretty_printing/_object_html_repr.py | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/skbase/base/_pretty_printing/_object_html_repr.py b/skbase/base/_pretty_printing/_object_html_repr.py
index c31737b3..1d3cb9ad 100644
--- a/skbase/base/_pretty_printing/_object_html_repr.py
+++ b/skbase/base/_pretty_printing/_object_html_repr.py
@@ -74,7 +74,7 @@ def _params_to_html_table(estimator):
         The estimator whose ``get_params(deep=False)`` will be used.
 
     Returns
-    -------
+  
     str
         HTML string of a ```` element, or empty string when the
         estimator has no parameters or no ``get_params`` method.
@@ -92,7 +92,8 @@ def _params_to_html_table(estimator):
         escaped_name = html.escape(param_name)
         rows.append(
             f""
-            f''
+            f''
             f''
             f""
         )
@@ -115,7 +116,8 @@ def _write_label_html(
     estimator=None,
 ):
     """Write labeled html with or without a dropdown with named details."""
-    out.write(f'
')
+    out.write(f'
')
+    out.write(f'
')
     name = html.escape(name)
 
     if name_details is not None:
@@ -134,7 +136,10 @@ def _write_label_html(
                     f"{table_html}
"
                 )
             else:
-                dropdown_content = f'
{name_details}
'
+                dropdown_content = (
+                    f'
'
+                    f'
{name_details}
'
+                )
         else:
             dropdown_content = (
                 f'
{name_details}
'

From 16ece732db54d03bc10cc34a04ad5e136de45bbd Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Wed, 25 Mar 2026 10:18:16 +0000
Subject: [PATCH 4/5] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 skbase/base/_pretty_printing/_object_html_repr.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/skbase/base/_pretty_printing/_object_html_repr.py b/skbase/base/_pretty_printing/_object_html_repr.py
index 1d3cb9ad..870a9770 100644
--- a/skbase/base/_pretty_printing/_object_html_repr.py
+++ b/skbase/base/_pretty_printing/_object_html_repr.py
@@ -74,7 +74,7 @@ def _params_to_html_table(estimator):
         The estimator whose ``get_params(deep=False)`` will be used.
 
     Returns
-  
+
     str
         HTML string of a ``
{escaped_name}'
+            f'{escaped_name}{value_str}
`` element, or empty string when the
         estimator has no parameters or no ``get_params`` method.
@@ -116,7 +116,7 @@ def _write_label_html(
     estimator=None,
 ):
     """Write labeled html with or without a dropdown with named details."""
-    out.write(f'
')
+    out.write(f"
")
     out.write(f'
')
     name = html.escape(name)
 
@@ -138,7 +138,7 @@ def _write_label_html(
             else:
                 dropdown_content = (
                     f'
'
-                    f'
{name_details}
'
+                    f"
{name_details}
"
                 )
         else:
             dropdown_content = (

From e28737b67c6b86c480bfcc9c475fefb3989fd953 Mon Sep 17 00:00:00 2001
From: AnimeshPatra2005 
Date: Wed, 25 Mar 2026 16:01:42 +0530
Subject: [PATCH 5/5] style: fix missing dashes under Returns in docstring

---
 skbase/base/_pretty_printing/_object_html_repr.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/skbase/base/_pretty_printing/_object_html_repr.py b/skbase/base/_pretty_printing/_object_html_repr.py
index 870a9770..d5a7ee68 100644
--- a/skbase/base/_pretty_printing/_object_html_repr.py
+++ b/skbase/base/_pretty_printing/_object_html_repr.py
@@ -74,7 +74,7 @@ def _params_to_html_table(estimator):
         The estimator whose ``get_params(deep=False)`` will be used.
 
     Returns
-
+    -------
     str
         HTML string of a ``
`` element, or empty string when the
         estimator has no parameters or no ``get_params`` method.