dataframe get unique values in column code example

Example 1: how to get distinct value in a column dataframe in python

df.column.unique()

Example 2: pandas unique values in column

#List unique values in the df['name'] column
df.name.unique()

Example 3: unique values in dataframe column count

df.groupby('mID').agg(['count', 'size', 'nunique']).stack()


             dID  hID  uID
mID                       
A   count      5    5    5
    size       5    5    5
    nunique    3    5    5
B   count      2    2    2
    size       2    2    2
    nunique    2    2    2
C   count      1    1    1
    size       1    1    1
    nunique    1    1    1

Example 4: values of unique from dataframe with count

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