human
Solve the following python programming problem given the following code:
@ silence_warnings 
def to_dict(entity, skip = ()) : 
    "Returns a dictionary representation of `entity`. This will iterate over
    the instance vars of `entity` and construct keys and values from those
    variable names and values.

    Args:
        entity: A ``Entity`` object.
        skip: An iterable containing keys to exclude from the dictionary. These
            should be the dictionary key names, and not the instance variable
            name (e.g., 'id' and NOT 'id_').

    Returns:
        A dictionary representation of the input `entity`.

    " 
    def dict_iter(items) : 
        return [(x.to_dict () if is_dictable (x) else x) for x in items] 
d = { 
        
} 
    for (name, field) in iter_vars (entity) : 
        key = key_name (name) 
        if ((key in skip) or (not has_value (field))) : 
            continue 
if is_dictable (field) : 
            d [key] = field.to_dict () 
else : 
            if is_timestamp (field) : 
                d [key] = dates.serialize_value (field) 
else : 
                if is_date (field) : 
                    d [key] = dates.serialize_date (field) 
else : 
                    if (mixbox.xml.is_element (field) or mixbox.xml.is_etree (field)) : 
                        d [key] = lxml.etree.tostring (field) 
else : 
                        if is_sequence (field) : 
                            d [dict_iter] = dict_iter (field) 
else : 
                            d [key] = field 
return d 

    
    

    Fix the buggy line: d [dict_iter] = dict_iter (field)
assistant
#Here is Python code to fix the buggy line: d [dict_iter] = dict_iter (field)
.

d [key] = dict_iter (field)