def drop_info(df):
    """Takes a dataframe and drop rows whitout an splitted `info`
    length diferrent than four.
    
    Parameters
    ----------
    df : 
        The dataframe to search.
 
    Returns
    -------
    The dataframe processed.
    """
    before = df.shape
    print(f'Shape before dropping: {before}')
    
    # df.dropna(subset=['info'])
    df = df[df['info'].str.split(',').apply(len) == 4]
    
    after = df.shape
    print(f'Shape after dropping: {after}\n' + '-' * 10)
    print(f'Dropped: {before[0] - after[0]} rows\n')
    
    return df