count unique dataframe 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: values of unique from dataframe with count

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

Example 4: dataframe python unique values rows

# get the unique values (rows)
df.drop_duplicates()

Example 5: count unique values in python

words = ['a', 'b', 'c', 'a']
unique_words = set(words)             # == set(['a', 'b', 'c'])
unique_word_count = len(unique_words) # == 3