human
Solve the following python programming problem given the following code:
def generate(modname) : 
    import sys 
    import functools 
    mod = sys.modules [modname] 
    def add_attr(k, v) : 
        setattr (mod, k, v) 
for i in mod.oxm_types : 
        if isinstance (i.num, tuple) : 
            continue 
if (i._class != OFPXMC_OPENFLOW_BASIC) : 
            continue 
uk = i.name.upper () 
        ofpxmt = i.oxm_field 
        td = i.type 
        add_attr (('OFPXMT_OFB_' + uk), ofpxmt) 
        add_attr (('OXM_OF_' + uk), mod.oxm_tlv_header (ofpxmt, td.size)) 
        add_attr ((('OXM_OF_' + uk) + '_W'), mod.oxm_tlv_header_w (ofpxmt, td.size)) 
oxx = 'oxm' 
    name_to_field = dict (((f.name, f) for f in mod.oxm_types)) 
    num_to_field = dict (((f.num, f) for f in mod.oxm_types)) 
    add_attr ('oxm_from_user', functools.partial (_from_user, oxx, name_to_field)) 
    add_attr ('oxm_from_user_header', functools.partial (_from_user_header, oxx, f)) 
    add_attr ('oxm_to_user', functools.partial (_to_user, oxx, num_to_field)) 
    add_attr ('oxm_to_user_header', functools.partial (_to_user_header, oxx, num_to_field)) 
    add_attr ('_oxm_field_desc', functools.partial (_field_desc, num_to_field)) 
    add_attr ('oxm_normalize_user', functools.partial (_normalize_user, oxx, mod)) 
    add_attr ('oxm_parse', functools.partial (_parse, mod)) 
    add_attr ('oxm_parse_header', functools.partial (_parse_header, mod)) 
    add_attr ('oxm_serialize', functools.partial (_serialize, oxx, mod)) 
    add_attr ('oxm_serialize_header', functools.partial (_serialize_header, oxx, mod)) 
    add_attr ('oxm_to_jsondict', _to_jsondict) 
    add_attr ('oxm_from_jsondict', _from_jsondict) 

    
    

    Fix the buggy line: add_attr ('oxm_from_user_header', functools.partial (_from_user_header, oxx, f))
assistant
#Here is Python program to fix the buggy line: add_attr ('oxm_from_user_header', functools.

add_attr ('oxm_from_user_header', functools.partial (_from_user_header, oxx, name_to_field))