Random Selection of DataFrame Column

This function randomly selects a specified column from a Vaex DataFrame and returns its values as a new Vaex DataFrame. If the specified column does not exist, it raises a ValueError exception.

Technology Stack : Vaex

Code Type : Vaex DataFrame operation

Code Difficulty : Intermediate

                
                    
def random_select_column(df, column_name):
    """
    Selects a random column from a Vaex DataFrame and returns its values as a Vaex DataFrame.
    """
    import vaex as vx

    # Check if the column exists in the DataFrame
    if column_name not in df.columns:
        raise ValueError(f"Column '{column_name}' not found in DataFrame.")

    # Select a random column from the DataFrame
    random_column = df[column_name].sample()

    # Return the selected column as a Vaex DataFrame
    return random_column.to_df()