python如何判断一句英文中的单词是什么词性

数据表里有英文原句，也有句子中每个单词的词性。要在python根据数据表判断每个单词是什么词性

import sqlite3

#连接数据库
#获取原句
conn = sqlite3.connect('label.db')
cur = conn.cursor()
sql = "select sentence from label"
cur.execute(sql)
sentences = cur.fetchall()

#获取第一句的名词
sql_2 = "select noun from label"
cur.execute(sql_2)
nouns = cur.fetchall()
noun1 = nouns[0]

#获取第一句的动词
sql_3 = "select verb from label"
cur.execute(sql_3)
verbs = cur.fetchall()
verb1 = verbs[0]


for n in noun1:
    list_n = n.split(',')

for v in verb1:
    list_v = v.split(',')

#拿到第一句的每个单词
for words in sentences[0]:
    word1 = words.replace('.', '')
    word2 = word1.split()
    
www = []
for w in word2:
    if w in list_n:
        w_n = " "+'<font color="red">' + w + " "+ '</font>'
        www.append(w_n)
    elif w in list_v:
        w_v = " "+'<font color="green">' + w + " " + '</font>'
        www.append(w_v)
    else:
        w1 = " "+ w +" "
        # print('<span>' + w + '</span>')
        www.append(w1)

se2 = "".join(www)    
print(se2)

只能做到第一句，没办法做到多个句子一起判断

import sqlite3

conn = sqlite3.connect('test2.db')
cur = conn.cursor()

#句子
sql = "select sentence from label"
cur.execute(sql)
sentences = cur.fetchall() 


#名词
sql_2 = "select noun from label"
cur.execute(sql_2)
nouns = cur.fetchall()


#动词
sql_3 = "select verb from label"
cur.execute(sql_3)
verbs = cur.fetchall()

#形容词
sql_4 = "select adj from label"
cur.execute(sql_4)
adjs = cur.fetchall()


#副词
sql_5 = "select adv from label"
cur.execute(sql_5)
advs = cur.fetchall()

#连词
sql_6 = "select conjunction from label"
cur.execute(sql_6)
conjunctions = cur.fetchall()

#介词
sql_7 = "select prep from label"
cur.execute(sql_7)
preps = cur.fetchall()

#代词
sql_8 = "select pronoun from label"
cur.execute(sql_8)
pronouns = cur.fetchall()



index=0

for index in range(3):
    # print(sentences[index])
    # print(nouns[index])
    www = []
    for sentence in sentences[index]:
        words_list=sentence.split()
        # print('单词列表',index, words_list)
    for noun,verb,adj,adv,conjunction,prep,pronoun in zip(nouns[index],verbs[index],adjs[index],advs[index],conjunctions[index],preps[index],pronouns[index]):
        noun_list=noun.split(',')
        verb_list=verb.split(',')
        adj_list=adj.split(',')
        adv_list=adv.split(',')
        conjunction_list=conjunction.split(',')
        prep_list=prep.split(',')
        pronoun_list=pronoun.split(',')
        
        

    for words in words_list:
        if words in noun_list:
            words_n = " "+'<font color="red">' + words + " "+ '</font>'
            www.append(words_n)  
        elif words in verb_list:
            words_v = " "+'<font color="green">' + words + " " + '</font>'
            www.append(words_v)
        elif words in adj_list:
            words_adj = " "+'<font color="pink">' + words + " " + '</font>'
            www.append(words_adj)
        elif words in adv_list:
            words_adv = " "+'<font color="orange">' + words + " " + '</font>'
            www.append(words_adv)
        elif words in conjunction_list:
            words_conjunction = " "+'<font color="blue">' + words + " " + '</font>'
            www.append(words_conjunction)
        elif words in prep_list:
            words_prep = " "+'<font color="purple">' + words + " " + '</font>'
            www.append(words_prep)
        elif words in pronoun_list:
            words_pronoun = " "+'<font color="yellow">' + words + " " + '</font>'
            www.append(words_pronoun)
        else:
            words_ori = " "+ words +" "
            www.append(words_ori)
    
    remaked_sentence = "".join(www)
    print("---------------------------------分割线---------------------------")    
    print('标记句子',index, remaked_sentence)

写的很繁琐，但是还是做出来了