pandas.DataFrame.value_counts — pandas 2.2.2 documentation
https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.value_counts.html
WebDataFrame.value_counts(subset=None, normalize=False, sort=True, ascending=False, dropna=True) [source] #. Return a Series containing the frequency of each distinct row in the Dataframe. Parameters: subsetlabel or list of labels, optional. Columns to use when counting unique combinations. normalizebool, default False.
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