Selecting multiple columns in a pandas dataframe

In pandas, you can select multiple column pandas by their name, but the column name gets stored as a list of the list that means a dictionary. It means you should use [ [ ] ] to pass the selected name of columns. This method df[['a','b']] produces a copy.

For example:

  df1 = df[['a','b']]

You can also use ‘.iloc’ method to access the list by column name. It is efficient to access the column by the index number of a column name.

For example:

  df1 = df.iloc[:,0:2]

Hope this answer helps.