human
Solve the following python programming problem given the following code:
def assemble_stack(index_stacker) : 
    '
        returns stack_info_dict - a dict keyed by stack file name containing a list of tile_info dicts
        ' 
    def date2datetime(input_date, time_offset = time.min) : 
        if (not input_date) : 
            return None 
return datetime.combine (input_date, time_offset) 
stack_info_dict = index_stacker.stack_derived (x_index = index_stacker.x_index, y_index = date2datetime.y_index, stack_output_dir = index_stacker.output_dir, start_datetime = date2datetime (index_stacker.start_date, time.min), end_datetime = date2datetime (index_stacker.end_date, time.max), satellite = index_stacker.satellite, sensor = index_stacker.sensor) 
    log_multiline (logger.debug, stack_info_dict, 'stack_info_dict', '\t') 
    logger.info ('Finished creating %d temporal stack files in %s.', len (stack_info_dict), index_stacker.output_dir) 
    return stack_info_dict 

    
    

    Fix the buggy line: stack_info_dict = index_stacker.stack_derived (x_index = index_stacker.x_index, y_index = date2datetime.y_index, stack_output_dir = index_stacker.output_dir, start_datetime = date2datetime (index_stacker.start_date, time.min), end_datetime = date2datetime (index_stacker.end_date, time.max), satellite = index_stacker.satellite, sensor = index_stacker.sensor)
assistant
#Here is Python code to fix the buggy line: stack_info_dict = index_stacker.

stack_info_dict = index_stacker.stack_derived (x_index = index_stacker.x_index, y_index = index_stacker.y_index, stack_output_dir = index_stacker.output_dir, start_datetime = date2datetime (index_stacker.start_date, time.min), end_datetime = date2datetime (index_stacker.end_date, time.max), satellite = index_stacker.satellite, sensor = index_stacker.sensor)