python requests做爬虫爬取oxford词典单词音标

import requests
import re


def phonetic_spelling(word):
    
    word=word.replace(" ","_")
    
    phoneticSpelling=""
    
    #url的格式有规律
    request=requests.get("https://en.oxforddictionaries.com/definition/"+word)
    
    html=request.text
    
    #查看网页发现音标所处的行HTML格式有规律 使用正则表达式描述
    regularExpression=r'<span\s+class="phoneticspelling">/([^\/]*)/</span>'
    
    matchObject=re.search(regularExpression,html,re.I)
    
    
    if matchObject:
        if matchObject.group(1):
            phoneticSpelling=matchObject.group(1)
            print("\nphoneticSpelling: ",word,"--->",phoneticSpelling)
        else:
            print("\nword \""+word+"\" has no phonetic spelling in the dictionary")
    else:
        print("\nword \""+word+"\" has no phonetic spelling in the dictionary")
        
    return phoneticSpelling


#测试
print(phonetic_spelling("Chinese"))

print(phonetic_spelling("English"))

print(phonetic_spelling("translation"))

print(phonetic_spelling("language"))

print(phonetic_spelling("crawler"))