count unique column values pandas code example
Example 1: count unique pandas
df['column'].nunique()
Example 2: return count of unique values pandas
item_counts = df["Your_Column"].value_counts()
Example 3: pandas unique values in column
df.name.unique()
Example 4: get count of unique values in column pandas
df = df.groupby('domain')['ID'].nunique()
print (df)
domain
'facebook.com' 1
'google.com' 1
'twitter.com' 2
'vk.com' 3
Name: ID, dtype: int64
Example 5: dataframe unique values in each column
for col in df:
print(df[col].unique())
Example 6: pandas count unique values in column
df.nunique()