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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def _images(self, sys_output):
    
        ''' a helper method for parsing docker image output '''

        import re
        gap_pattern = re.compile('\t|\s{2,}')
        image_list = []
        output_lines = sys_output.split('\n')
        column_headers = gap_pattern.split(output_lines[0])
        for i in range(1,len(output_lines)):
            columns = gap_pattern.split(output_lines[i])
            if len(columns) == len(column_headers):
                image_details = {}
                for j in range(len(columns)):
                    image_details[column_headers[j]] = columns[j]
                image_list.append(image_details)

        return image_list