TypeError:需要类似字节的对象,而不是python和CSV中的'str'

TypeError:需要类似字节的对象,而不是'str'

在执行下面的python代码时将错误的表格数据保存在Csv文件中 . 不知道如何获得rideup.pls帮助我 .

import csv
import requests
from bs4 import BeautifulSoup

url='http://www.mapsofindia.com/districts-india/'
response=requests.get(url)
html=response.content

soup=BeautifulSoup(html,'html.parser')
table=soup.find('table', attrs={'class':'tableizer-table'})
list_of_rows=[]
for row in table.findAll('tr')[1:]:
    list_of_cells=[]
    for cell in row.findAll('td'):
        list_of_cells.append(cell.text)
    list_of_rows.append(list_of_cells)
outfile=open('./immates.csv','wb')
writer=csv.writer(outfile)
writer.writerow(["SNo", "States", "Dist", "Population"])
writer.writerows(list_of_rows)

在最后一行上方 .

回答(3)

2 years ago

您使用的是Python 2方法而不是Python 3 .

更改:

outfile=open('./immates.csv','wb')

至:

outfile=open('./immates.csv','w')

并且您将获得具有以下输出的文件:

SNo,States,Dist,Population
1,Andhra Pradesh,13,49378776
2,Arunachal Pradesh,16,1382611
3,Assam,27,31169272
4,Bihar,38,103804637
5,Chhattisgarh,19,25540196
6,Goa,2,1457723
7,Gujarat,26,60383628
.....

在Python 3中,csv以文本模式获取输入,而在Python 2中,它以二进制模式获取 .

Edited to Add

这是我运行的代码:

url='http://www.mapsofindia.com/districts-india/'
html = urllib.request.urlopen(url).read()
soup = BeautifulSoup(html)
table=soup.find('table', attrs={'class':'tableizer-table'})
list_of_rows=[]
for row in table.findAll('tr')[1:]:
    list_of_cells=[]
    for cell in row.findAll('td'):
        list_of_cells.append(cell.text)
    list_of_rows.append(list_of_cells)
outfile = open('./immates.csv','w')
writer=csv.writer(outfile)
writer.writerow(['SNo', 'States', 'Dist', 'Population'])
writer.writerows(list_of_rows)

2 years ago

我对Python3也有同样的问题 . 我的代码写入 io.BytesIO() .

替换为 io.StringIO() 已解决 .

2 years ago

file = open('parsed_data.txt', 'w')
for link in soup.findAll('a', attrs={'href': re.compile("^http")}): print (link)
soup_link = str(link)
print (soup_link)
file.write(soup_link)
file.flush()
file.close()

在我的例子中,我使用BeautifulSoup用Python 3.x编写.txt . 它有同样的问题 . 正如@tsduteba所说,将第一行的'wb'改为'w' .