ECharts depends on sliders fix

[MarcSkovMadsen]

Fixes #1874

[MarcSkovMadsen]

Test 1

This works because a ValueError is no longer raised.

from pyecharts.charts import Bar
import panel as pn
pn.extension('echarts')


bar1 = pn.widgets.IntSlider(start=1, end=100, value=50)
bar2 = pn.widgets.IntSlider(start=1, end=100, value=50)

@pn.depends(bar1.param.value, bar2.param.value)
def plot(bar1, bar2):
    my_plot= (Bar()
        .add_xaxis(['Bar1', 'Bar2'])
        .add_yaxis('Values', [bar1, bar2])
    )
    return pn.pane.ECharts(my_plot, width=500, height=250)
pn.Row(pn.Column(bar1, bar2), plot).servable()

[codecov]

Codecov Report

Merging #1875 (dd42c6a) into master (59d62df) will decrease coverage by 0.30%.
The diff coverage is 37.50%.

@@            Coverage Diff             @@
##           master    #1875      +/-   ##
==========================================
- Coverage   85.15%   84.85%   -0.31%     
==========================================
  Files         152      152              
  Lines       18791    18411     -380     
==========================================
- Hits        16001    15622     -379     
+ Misses       2790     2789       -1     

Impacted Files	Coverage Δ
panel/tests/pane/test_echart.py	39.28% <10.00%> (-13.35%)	⬇️
panel/pane/echarts.py	82.69% <83.33%> (+9.81%)	⬆️
panel/config.py	45.23% <0.00%> (-5.98%)	⬇️
panel/io/callbacks.py	26.02% <0.00%> (-3.85%)	⬇️
panel/auth.py	35.06% <0.00%> (-3.02%)	⬇️
panel/pane/ipywidget.py	47.05% <0.00%> (-2.95%)	⬇️
panel/io/state.py	48.64% <0.00%> (-2.89%)	⬇️
panel/tests/template/test_manual.py	60.63% <0.00%> (-2.37%)	⬇️
panel/pane/plot.py	54.59% <0.00%> (-2.24%)	⬇️
panel/models/echarts.py	84.61% <0.00%> (-2.06%)	⬇️
... and 71 more

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[philippjfr]

Thanks @MarcSkovMadsen!