df count unique values code example

Example 1: count unique pandas

df['column'].nunique()

Example 2: values of unique from dataframe with count

data = df.groupby('ColumnName')['IDColumnName'].nunique()
print(data)

Example 3: how to count unique values in a column dataframe in python

dataframe.column.nunique()

Example 4: pandas count unique values in column

df.nunique()

Example 5: dataframe number of unique rows

1
# get the unique values (rows) by retaining last row
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df.drop_duplicates(keep='last')