Annoying logging to console when using panel tabulator with styling

Given the following:

import numpy as np
import pandas as pd
import panel as pn

style_df = pd.DataFrame(np.random.randn(4, 5), columns=list('ABCDE'))
styled = pn.widgets.Tabulator(style_df)

def color_negative_red(val):
    Takes a scalar and returns a string with
    the css property `'color: red'` for negative
    strings, black otherwise.
    color = 'red' if val < 0 else 'black'
    return 'color: %s' % color

def highlight_max(s):
    highlight the maximum in a Series yellow.
    is_max = s == s.max()
    return ['background-color: yellow' if v else '' for v in is_max]

panel serve

There is console output:

(<function Styler.applymap.<locals>.<lambda> at 0x7f2a36c7bbe0>, (<function color_negative_red at 0x7f2a36c7bac0>, None), {})
(<function Styler.apply.<locals>.<lambda> at 0x7f2a36c7bc70>, (<function highlight_max at 0x7f2a36c7bb50>, 0, None), {})

This is annoying when I have an app that is applying a lot of styling in different places, then that’s all I see in the console.

My guess is there’s a debugging console.log somewhere in the codebase left behind.

1 Like

It’s my fault, I left a stray print. Good news is that this precipitated us adding linting to catch this in the future. Will be fixed in 1.3.5 tomorrow.


Panel 1.3.5 postponed until tomorrow due to COVID taking hold in my house :slight_smile:

1 Like

Thanks @philippjfr I see that the release is now out! I hope that you and family are recovering well :pray: