def col_strip(df, col_name, dest=False):
    """ Performs str.strip() a column of a DataFrame
    Parameters:
    df - DataFrame
        DataFrame to operate on
    col_name - string
        Name of column to strip
    dest - bool, default False
        Whether to apply the result to the DataFrame or return it.
        True is apply, False is return.
    """
    if dest:
        df[col_name] = df[col_name].str.strip()
    else:
        return df[col_name].str.strip()
