plotly
diff --git a/‎CHANGELOG.md
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diff --git a/‎README.md
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diff --git a/‎packages/python/plotly/_plotly_utils/basevalidators.py
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+30-3Lines changed: 30 additions & 3 deletions b/‎packages/python/plotly/_plotly_utils/basevalidators.py
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+30-3Lines changed: 30 additions & 3 deletions
diff --git a/‎packages/python/plotly/plotly/express/_doc.py
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+6-3Lines changed: 6 additions & 3 deletions
@@ -6,6 +6,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Updated
 - Specify Python version 3.8-3.11 for development virtual environments and pin `pytest` at version 8.1.1 to match.
+- Update `IntegerValidator` to handle `extras` option to allow supporting additional keyword values. For example, 'bold' and 'normal' as well as integers as used in font weights [#4612].
 
 ## [5.22.0] - 2024-05-01
 
 
@@ -31,6 +31,13 @@
     </tr>
 </table>
 
+<div align="center">
+  <a href="https://dash.plotly.com/project-maintenance">
+    <img src="https://dash.plotly.com/assets/images/maintained-by-plotly.png" width="400px" alt="Maintained by Plotly">
+  </a>
+</div>
+
+
 ## Quickstart
 
 `pip install plotly==5.22.0`
 
@@ -824,13 +824,21 @@ class IntegerValidator(BaseValidator):
             "dflt",
             "min",
             "max",
+            "extras",
             "arrayOk"
         ]
     },
     """
 
     def __init__(
-        self, plotly_name, parent_name, min=None, max=None, array_ok=False, **kwargs
+        self,
+        plotly_name,
+        parent_name,
+        min=None,
+        max=None,
+        extras=None,
+        array_ok=False,
+        **kwargs,
     ):
         super(IntegerValidator, self).__init__(
             plotly_name=plotly_name, parent_name=parent_name, **kwargs
@@ -855,6 +863,7 @@ def __init__(
         else:
             self.has_min_max = False
 
+        self.extras = extras if extras is not None else []
         self.array_ok = array_ok
 
     def description(self):
@@ -878,6 +887,16 @@ def description(self):
                 )
             )
 
+        # Extras
+        if self.extras:
+            desc = (
+                desc
+                + (
+                    """
+        OR exactly one of {extras} (e.g. '{eg_extra}')"""
+                ).format(extras=self.extras, eg_extra=self.extras[-1])
+            )
+
         if self.array_ok:
             desc = (
                 desc
@@ -891,6 +910,8 @@ def validate_coerce(self, v):
         if v is None:
             # Pass None through
             pass
+        elif v in self.extras:
+            return v
         elif self.array_ok and is_homogeneous_array(v):
             np = get_module("numpy")
             v_array = copy_to_readonly_numpy_array(
@@ -917,14 +938,20 @@ def validate_coerce(self, v):
             v = v_array
         elif self.array_ok and is_simple_array(v):
             # Check integer type
-            invalid_els = [e for e in v if not isinstance(e, int)]
+            invalid_els = [
+                e for e in v if not isinstance(e, int) and e not in self.extras
+            ]
 
             if invalid_els:
                 self.raise_invalid_elements(invalid_els[:10])
 
             # Check min/max
             if self.has_min_max:
-                invalid_els = [e for e in v if not (self.min_val <= e <= self.max_val)]
+                invalid_els = [
+                    e
+                    for e in v
+                    if not (self.min_val <= e <= self.max_val) and e not in self.extras
+                ]
 
                 if invalid_els:
                     self.raise_invalid_elements(invalid_els[:10])
 
@@ -248,7 +248,7 @@
     ],
     facet_row_spacing=[
         "float between 0 and 1",
-        "Spacing between facet rows, in paper units. Default is 0.03 or 0.0.7 when facet_col_wrap is used.",
+        "Spacing between facet rows, in paper units. Default is 0.03 or 0.07 when facet_col_wrap is used.",
     ],
     facet_col_spacing=[
         "float between 0 and 1",
@@ -433,7 +433,7 @@
         "str",
         "One of `'auto'`, `'svg'` or `'webgl'`, default `'auto'`",
         "Controls the browser API used to draw marks.",
-        "`'svg`' is appropriate for figures of less than 1000 data points, and will allow for fully-vectorized output.",
+        "`'svg'` is appropriate for figures of less than 1000 data points, and will allow for fully-vectorized output.",
         "`'webgl'` is likely necessary for acceptable performance above 1000 points but rasterizes part of the output. ",
         "`'auto'` uses heuristics to choose the mode.",
     ],
@@ -510,7 +510,10 @@
         "boolean (default `False`)",
         "If `True`, an extra line segment is drawn between the first and last point.",
     ],
-    line_shape=["str (default `'linear'`)", "One of `'linear'` or `'spline'`."],
+    line_shape=[
+        "str (default `'linear'`)",
+        "One of `'linear'`, `'spline'`, `'hv'`, `'vh'`, `'hvh'`, or `'vhv'`",
+    ],
     fitbounds=["str (default `False`).", "One of `False`, `locations` or `geojson`."],
     basemap_visible=["bool", "Force the basemap visibility."],
     scope=[