[Py] XLS / Excel files - How to read using Pandas

import pandas
pathfile = '/home/user/federative_unit.xlsx'
df = pandas.read_excel(pathfile,converters={
    'id':int,
    'objectid':str,
    'abbreviation':str,
    'iso3166_2':str,
    'name':str,
    'name_unaccent':str,
    'estimated_population':int,
    'adjective':str,
    'adjective_alternative':str,
    'macroregion':str,
    'wikipedia_pt':str,
    'website':str
})
df = df.fillna('')
for i in df.index:
    _id = df['objectid'][i].replace(' ','')
    abbreviation = (df['abbreviation'][i]).replace('"','')
    ibge_id = df['ibge_id'][i]
    iso3166_2 = df['iso3166_2'][i]
    osm_relation_id = df['osm_relation_id'][i]
    wikidata_id = df['wikidata_id'][i]
    name = df['name'][i]
    name_unaccent = df['name_unaccent'][i]
    estimated_population = df['estimated_population'][i]
    adjective = df['adjective'][i]
    adjective_alternative = df['adjective_alternative'][i]
    macroregion = df['macroregion'][i]
    wikipedia_pt = df['wikipedia_pt'][i]
    website = df['website'][i]
    timezone = df['timezone'][i]
    flag_image = df['flag_image'][i]
    country_abbreviation = df['country_abbreviation'][i]