styling: a float column holding an infinity falls back to the obj displayer (OverflowError in _formatted_char_count) #1075

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1. paddymul

   added

   Histograms

   on Oct 6, 2026
2. paddymul commented on Oct 7, 2026

   

   paddymul

   on Oct 7, 2026

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   Probe script for this issue. Save it as probe_1075.py in a buckaroo checkout and run uv run python probe_1075.py. The output below is from main at e88ace9.

   probe_1075.py

   """_formatted_char_count sizes a float column with int(max(abs(max), abs(min))); an infinite bound raises
   OverflowError and style_column_with_fallback drops the column to the obj displayer."""
   import logging
   logging.basicConfig(level=logging.WARNING, format='LOG: %(message).160s')
   import numpy as np
   import pandas as pd
   import polars as pl
   from buckaroo.buckaroo_widget import BuckarooWidget
   from buckaroo.polars_buckaroo import PolarsBuckarooWidget
   
   df = pd.DataFrame({'with_inf': [1.5, 2.5, np.inf, 4.5], 'with_neg_inf': [1.5, 2.5, -np.inf, 4.5],
                      'no_inf': [1.5, 2.5, 3.5, 4.5]})
   for label, w in [('pandas', BuckarooWidget(df)), ('polars', PolarsBuckarooWidget(pl.from_pandas(df)))]:
       for cc in w.df_display_args['main']['df_viewer_config']['column_config']:
           print(label, cc['header_name'], cc['displayer_args'], cc.get('ag_grid_specs'))

   Output at e88ace9

   LOG: Warning, styling failed from DefaultMainStyling.style_column (via <class 'buckaroo.customizations.styling.DefaultMainStyling'>) on column a with col_meta {'orig
   LOG: cannot convert float infinity to integer
   LOG: Warning, styling failed from DefaultMainStyling.style_column (via <class 'buckaroo.customizations.styling.DefaultMainStyling'>) on column b with col_meta {'orig
   LOG: cannot convert float infinity to integer
   LOG: Warning, styling failed from DefaultMainStyling.style_column (via <class 'buckaroo.customizations.styling.DefaultSummaryStatsStyling'>) on column a with col_met
   LOG: cannot convert float infinity to integer
   LOG: Warning, styling failed from DefaultMainStyling.style_column (via <class 'buckaroo.customizations.styling.DefaultSummaryStatsStyling'>) on column b with col_met
   LOG: cannot convert float infinity to integer
   LOG: Warning, styling failed from DefaultMainStyling.style_column (via <class 'buckaroo.customizations.styling.DefaultSummaryStatsStyling'>) on column a with col_met
   LOG: cannot convert float infinity to integer
   LOG: Warning, styling failed from DefaultMainStyling.style_column (via <class 'buckaroo.customizations.styling.DefaultSummaryStatsStyling'>) on column b with col_met
   LOG: cannot convert float infinity to integer
   LOG: Warning, styling failed from DefaultMainStyling.style_column (via <class 'buckaroo.polars_buckaroo.PolarsMainStyling'>) on column a with col_meta {'orig_col_nam
   LOG: cannot convert float infinity to integer
   LOG: Warning, styling failed from DefaultMainStyling.style_column (via <class 'buckaroo.polars_buckaroo.PolarsMainStyling'>) on column b with col_meta {'orig_col_nam
   LOG: cannot convert float infinity to integer
   pandas with_inf {'displayer': 'obj'} None
   pandas with_neg_inf {'displayer': 'obj'} None
   pandas no_inf {'displayer': 'float', 'min_fraction_digits': 3, 'max_fraction_digits': 3} {'minWidth': 100}
   polars with_inf {'displayer': 'obj'} None
   polars with_neg_inf {'displayer': 'obj'} None
   polars no_inf {'displayer': 'float', 'min_fraction_digits': 3, 'max_fraction_digits': 3} {'minWidth': 100}