Python Param Panel with Resettable Button

panel_param_hvplot_resettable.py

import param as pm
import panel as pn
import hvplot.pandas
import pandas as pd
import numpy as np
pn.extension()

class ResettableParameterized(pm.Parameterized):
    def _reset(self):
        with pm.parameterized.batch_call_watchers(self):
            for param in self.param:
                if param not in ["name"]:
                    setattr(self, param, self.param[param].default)

    def panel(self):
        """Generate a Panel layout including parameter controls and a reset button."""
        reset_button = pn.widgets.Button(name="Reset to Defaults", button_type="warning")
        reset_button.on_click(lambda event: self._reset())
        return pn.Column(pn.Param(self.param), reset_button)

class Test(ResettableParameterized):
    y = pm.Number(10, bounds=(0,20))
    def view(self):
        xs = np.linspace(0,1,100)
        ys = [self.y for x in xs]
        df = pd.DataFrame({'x':xs,'y':ys})
        return df.hvplot(x='x',y='y')

t = Test()

pn.Row(t.panel, t.view)