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python - TypeError：描述符“split”需要一个“str”对象但收到一个“bytes”

问题描述

我正在尝试使用 Github 上提供的 python 脚本从 ESPN Cricinfo 抓取数据。代码如下。

import urllib.request as ur
import csv
import sys
import time
import os
import unicodedata
from urllib.parse import urlparse
from bs4 import BeautifulSoup

BASE_URL = 'http://www.espncricinfo.com'
for i in range(0, 6019):
url = 'http://search.espncricinfo.com/ci/content/match/search.html?search=first%20class;all=1;page='
    soupy = BeautifulSoup(ur.urlopen(url + str(i)).read())

    time.sleep(1)
    for new_host in soupy.findAll('a', {'class' : 'srchPlyrNmTxt'}):
        try:
            new_host = new_host['href']
        except:
            continue
        odiurl = BASE_URL + urlparse(new_host).geturl()
        new_host = unicodedata.normalize('NFKD', new_host).encode('ascii','ignore')
        print (new_host)
        print (str.split(new_host, "/"))[4]
        html = urllib2.urlopen(odiurl).read()
        if html:
            with open('espncricinfo-fc/{0!s}'.format(str.split(new_host, "/")[4]), "wb") as f:
                f.write(html)

错误就在这一行。

print (str.split(new_host, "/"))[4]

TypeError：描述符“split”需要一个“str”对象，但收到了一个“bytes”，您将得到任何帮助。谢谢

标签： pythoncsvbeautifulsoupscrape

解决方案

采用

str.split(new_host.decode("utf-8"), "/")[4]

.decode("utf-8")显然是最重要的部分。这会将你的byte对象变成一个字符串。

另一方面，请注意urllib2（顺便说一句，您正在使用但未导入）不再使用（请参阅this）。相反，您可以使用from urllib.request import urlopen.

编辑：这是完整的代码，不会给您在问题中描述的错误。我要强调的是，因为没有先前创建的文件，该with open(...)语句会给你一个FileNotFoundError.

import urllib.request as ur
import csv
import sys
import time
import os
import unicodedata
from urllib.parse import urlparse
from bs4 import BeautifulSoup
from urllib.request import urlopen

BASE_URL = 'http://www.espncricinfo.com'
for i in range(0, 6019):
    url = 'http://search.espncricinfo.com/ci/content/match/search.html?search=first%20class;all=1;page='
    soupy = BeautifulSoup(ur.urlopen(url + str(i)).read())

    time.sleep(1)
    for new_host in soupy.findAll('a', {'class' : 'srchPlyrNmTxt'}):
        try:
            new_host = new_host['href']
        except:
            continue
        odiurl = BASE_URL + urlparse(new_host).geturl()
        new_host = unicodedata.normalize('NFKD', new_host).encode('ascii','ignore')
        print(new_host)
        print(str.split(new_host.decode("utf-8"), "/")[4])
        html = urlopen(odiurl).read()
        if html:
            with open('espncricinfo-fc/{0!s}'.format(str.split(new_host.decode("utf-8"), "/")[4]), "wb") as f:
                f.write(html)

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