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how to find the closest value in column python


	result_index = df['col_to_search'].sub(search_value).abs().idxmin()

#.sub(search_value) subtracts search_value from the df[col_to_search] to make the nearest value almost-zero,
#.abs() makes the almost-zero the minimum of the column,
#.idxmin() yields the df.index of the minimum value, or the closest match to search_value.
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