how to count unique values pandas code example

Example 1: count unique pandas

df['column'].nunique()

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: counting unique values python

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