How can i get the unique values of all the column in a dataframe ? I am trying to do something like below as of now.
for col in train_features_df.columns:
print(train_features_df.col.unique())
But this gives me the error AttributeError: 'DataFrame' object has no attribute 'col'
For e.g for below dataframe i want to the below output
df = pd.DataFrame({'A':[1,1,3],
'B':[4,5,6],
'C':[7,7,7]})
I want a output of 1,3 for A and 4,5,6 for B and 7 for C .
You can apply unique
on each series by transposing like,
>>> df
A B C
0 1 4 7
1 1 5 7
2 3 6 7
>>> df.T.apply(lambda x: x.unique(), axis=1)
A [1, 3]
B [4, 5, 6]
C [7]
dtype: object
>>>