matplotlib · BSNayal · Jul 1, 2021 · Jul 5, 2021 · Jul 5, 2021 · Jul 1, 2021
diff --git a/lib/matplotlib/tests/test_widgets.py b/lib/matplotlib/tests/test_widgets.py
@@ -418,6 +418,13 @@ def test_slider_valmin_valmax():
     assert slider.val == slider.valmax
 
 
+def test_slider_update_valmin_valmax():
+    fig, ax = plt.subplots()
+    slider = widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0,
+                            valinit=10.0)
+    slider.update_range(vmin=20, vmax=50)
+    assert slider.val == slider.valmin
+
 def test_slider_valstep_snapping():
     fig, ax = plt.subplots()
     slider = widgets.Slider(ax=ax, label='', valmin=0.0, valmax=24.0,

diff --git a/lib/matplotlib/widgets.py b/lib/matplotlib/widgets.py
@@ -809,6 +809,24 @@ def on_changed(self, func):
         """
         return self._observers.connect('changed', lambda val: func(val))
 
+    def update_range(self, vmin=None, vmax=None):
+        """Update the range of the slider"""
+        if not vmin and not vmax:
+            raise ValueError(
+                (f"Argument vmin ({type(vmin)}) has no value"
+                    f"Argument vmax ({type(vmax)}) has no value"))
+        if vmin:
+            self.valmin = vmin
+        if vmax:
+            self.valmax = vmax
+        self.val = self._value_in_bounds(self.valinit)
+        if self.orientation == 'vertical':
+            self.ax.set_ylim((self.valmin, self.valmax))
+            self.hline.set_ydata(self.val)
+        else:
+            self.ax.set_xlim((self.valmin, self.valmax))
+            self.vline.set_xdata(self.val)
+
 
 class CheckButtons(AxesWidget):
     r"""