numpy count unique values code example

Example 1: np array value count

unique_elements, counts_elements = np.unique(a, return_counts=True)

Example 2: how to count number of unique values in a column python

pd.value_counts(df.Account_Type)

Gold        3
Platinum    1
Name: Account_Type, dtype: int64

Example 3: count unique values pandas

df['hID'].nunique()
5

Example 4: counting unique values python

df.loc[df['mID']=='A','hID'].agg(['nunique','count','size'])