unique count in pandas 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: count unique pandas

df['column'].nunique()

Example 3: pandas count the number of unique values in a column

df['hID'].nunique()
5

Example 4: values of unique from dataframe with count

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