dataframe count distinct code example

Example 1: pandas groupby column count distinct values

# Pandas group by a column looking at the count unique/count distinct values of another column

df.groupby('param')['group'].nunique()

Example 2: pandas count distinct values in a column

Series.value_counts(self, normalize=False, sort=True, ascending=False, bins=None, dropna=True)

Example 3: Returns a new DataFrame containing the distinct rows in this DataFrame

# Returns a new DataFrame containing the distinct rows in this DataFrame

df.ditinct().count()
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