我试图从cars.com上分别提取车身颜色、内饰颜色、变速器等信息。
HTML格式:
<ul class="listing-row__meta">
<li>
<strong>
Ext. Color:
</strong>
Gray
</li>
<li>
<strong>
Int. Color:
</strong>
White
</li>
<li>
<strong>
Transmission:
</strong>
Automatic
</li>
我尝试了下面的代码,但它显示了“预期的字符串或类似对象的字节”。如有任何建议或解决方案,将不胜感激。
from bs4 import BeautifulSoup
import urllib
import re
url ='https://www.cars.com/for-sale/searchresults.action/?zc=92617&rd=10&stkTypId=28881&mkId=28263&searchSource=RESEARCH_SHOP_INDEX'
response = requests.get(url)
page = response.text
soup = BeautifulSoup(page, 'lxml')
all_matches = soup.find_all('div',{'class':'shop-srp-listings__listing-container'})
for each in all_matches:
info=each.findAll('ul',class_='listing-row__meta')
pattern=re.compile(r'Ext. Color:')
matches=pattern.finditer(info)
for match in matches:
print(match.text)
最佳答案
也许,这会更接近你想要提取的,我猜,用一个类似于:
(?is)<strong>\s*([^<]*?)\s*<\/strong>
或者,
(?is)(?<=<strong>)\s*[^<]*?\s*(?=<\/strong>)
当然,您也可以使用内置函数来实现这一点。
测试1
from bs4 import BeautifulSoup
import urllib
import re
import requests
url = 'https://www.cars.com/for-sale/searchresults.action/?zc=92617&rd=10&stkTypId=28881&mkId=28263&searchSource=RESEARCH_SHOP_INDEX'
response = requests.get(url)
page = response.text
soup = BeautifulSoup(page, 'lxml')
all_matches = soup.find_all(
'div', {'class': 'shop-srp-listings__listing-container'})
for each in all_matches:
info = each.findAll('ul', class_='listing-row__meta')
matches = re.findall(
r'(?is)<strong>\s*[^<]*?\s*<\/strong>\s*([^<]*?)\s*<', str(info[0]))
for match in matches:
print(match)
产出1
Gray
Beige
Automatic
AWD
Gray
White
Automatic
AWD
Black
测试2
如果你愿意的话,你也可以做一个口述:
from bs4 import BeautifulSoup
import urllib
import re
import requests
url = 'https://www.cars.com/for-sale/searchresults.action/?zc=92617&rd=10&stkTypId=28881&mkId=28263&searchSource=RESEARCH_SHOP_INDEX'
response = requests.get(url)
page = response.text
soup = BeautifulSoup(page, 'lxml')
all_matches = soup.find_all(
'div', {'class': 'shop-srp-listings__listing-container'})
for each in all_matches:
info = each.findAll('ul', class_='listing-row__meta')
matches = dict(re.findall(
r'(?is)<strong>\s*([^<]*?)\s*<\/strong>\s*([^<]*?)\s*<', str(info[0])))
for k, v in matches.items():
print(f'{k} {v}')
产出2
Ext. Color: Gray
Int. Color: Beige
Transmission: Automatic
Drivetrain: AWD
Ext. Color: Gray
Int. Color: White
Transmission: Automatic
Drivetrain: AWD
Ext. Color: Black
测试3
如果您愿意列出:
from bs4 import BeautifulSoup
import urllib
import re
import requests
url = 'https://www.cars.com/for-sale/searchresults.action/?zc=92617&rd=10&stkTypId=28881&mkId=28263&searchSource=RESEARCH_SHOP_INDEX'
response = requests.get(url)
page = response.text
soup = BeautifulSoup(page, 'lxml')
all_matches = soup.find_all(
'div', {'class': 'shop-srp-listings__listing-container'})
for each in all_matches:
info = each.findAll('ul', class_='listing-row__meta')
matches = re.findall(
r'(?is)<strong>\s*([^<]*?)\s*<\/strong>\s*([^<]*?)\s*<', str(info[0]))
for match in matches:
print(list(match))
输出
['Transmission:', 'Automatic']
['Drivetrain:', 'RWD']
['Ext. Color:', 'Gray']
['Int. Color:', 'Gray']
['Transmission:', 'Automatic']
['Drivetrain:', 'RWD']
['Ext. Color:', 'White']
['Int. Color:', 'Black']
['Transmission:', 'Automatic']
['Drivetrain:', 'RWD']
['Ext. Color:', 'White']
['Int. Color:', 'Beige']
['Transmission:', 'Automatic']
['Drivetrain:', 'AWD']
['Ext. Color:', 'Gray']
['Int. Color:', 'Beige']
['Transmission:', 'Automatic']
['Drivetrain:', 'AWD']
['Ext. Color:', 'White']
测试4
from bs4 import BeautifulSoup
import urllib
import re
import requests
url = 'https://www.cars.com/for-sale/searchresults.action/?zc=92617&rd=10&stkTypId=28881&mkId=28263&searchSource=RESEARCH_SHOP_INDEX'
response = requests.get(url)
page = response.text
soup = BeautifulSoup(page, 'lxml')
all_matches = soup.find_all(
'div', {'class': 'shop-srp-listings__listing-container'})
keys = ['Ext. Color', 'Int. Color', 'Transmission', 'Drivetrain']
outputs = dict()
for each in all_matches:
info = each.findAll('ul', class_='listing-row__meta')
matches = dict(re.findall(
r'(?is)<strong>\s*([^<:]*?)\s*:\s*<\/strong>\s*([^<]*?)\s*<', str(info[0])))
for item in matches.items():
if item[0] not in outputs:
outputs[item[0]] = [item[1]]
if item[0] in keys:
outputs[item[0]].append(item[1])
产出4
{Ext.Color':['银','银','白','白','黑','灰',
“灰色”,“黑色”,“黑色”,“白色”,“蓝色”,“红色”,“银色”,“灰色”,
“黑”,“白”,“黑”,“灰”,“白”,“黑”,“黑”],“内景。
颜色“:['米色','米色','黑色','白色','黑色','灰色',
“米色”,“黑色”,“黑色”,“米色”,“米色”,“黑色”,“黑色”,
“黑”,“黑”,“黑”,“黑”,“白”,“白”,“黑”],
'变速器':['自动','自动','自动','自动',
“自动”,“自动”,“自动”,“自动”,“自动”,
“自动”,“自动”,“自动”,“自动”,“自动”,
“自动”,“自动”,“自动”,“自动”,“自动”,
“自动”,“自动”],“传动系”:[“AWD”,“AWD”,“AWD”,“AWD”,
“后轮驱动”,“后轮驱动”,“后轮驱动”,“后轮驱动”,“全轮驱动”,“后轮驱动”,“后轮驱动”,“后轮驱动”,“全轮驱动”,“后轮驱动”,
“后轮驱动”,“全轮驱动”,“后轮驱动”,“全轮驱动”,“全轮驱动”,“全轮驱动”,“全轮驱动”]}
测试5
from bs4 import BeautifulSoup
import urllib
import re
import requests
url = 'https://www.cars.com/for-sale/searchresults.action/?zc=92617&rd=10&stkTypId=28881&mkId=28263&searchSource=RESEARCH_SHOP_INDEX'
response = requests.get(url)
page = response.text
soup = BeautifulSoup(page, 'lxml')
all_matches = soup.find_all(
'div', {'class': 'shop-srp-listings__listing-container'})
keys = ['Ext. Color', 'Int. Color', 'Transmission', 'Drivetrain']
outputs = dict()
for each in all_matches:
info = each.findAll('ul', class_='listing-row__meta')
matches = dict(re.findall(
r'(?is)<strong>\s*([^<:]*?)\s*:\s*<\/strong>\s*([^<]*?)\s*<', str(info[0])))
for item in matches.items():
if item[0] not in outputs:
outputs[item[0]] = [item[1]]
if item[0] in keys:
outputs[item[0]].append(item[1])
print(outputs)
print('*' * 50)
no_duplicate_outputs = dict()
for item in outputs.items():
if item[0] not in no_duplicate_outputs:
no_duplicate_outputs[item[0]] = list(set(item[1]))
print(no_duplicate_outputs)
产出5
{Ext.Color':['黑','黑','白','黑','其他','灰',
“白色”,“白色”,“灰色”,“白色”,“灰色”,“银色”,“蓝色”,“黑色”,
“银色”,“银色”,“黑色”,“蓝色”,“蓝色”,“黑色”,“白色”],“内景。
颜色“:['黑色','黑色','米色','米色','黑色','灰色','黑色',
“米色”,“米色”,“白色”,“黑色”,“黑色”,“灰色”,“黑色”,“黑色”,
“灰色”,“黑色”,“黑色”,“黑色”,“白色”,“黑色”],“传输”:
[“自动”,“自动”,“自动”,“自动”,“自动”,
“自动”,“自动”,“自动”,“自动”,“自动”,
“自动”,“自动”,“自动”,“自动”,“自动”,
“自动”,“自动”,“自动”,“自动”,“自动”,
“自动”],“传动系”:[“全轮驱动”,“全轮驱动”,“后轮驱动”,“后轮驱动”,“后轮驱动”,
“后轮驱动”,“全轮驱动”,“全轮驱动”,“全轮驱动”,“全轮驱动”,“全轮驱动”,“全轮驱动”,“全轮驱动”,“全轮驱动”,“全轮驱动”,
'RWD'、'AWD'、'AWD'、'AWD'、'AWD']}
**************************************************{'Ext.Color':['Silver'、'White'、'Blue'、'Other'、'Black'、'Gray'、'Int.Color':
['米色','白色','黑色','灰色','变速器':['自动'],
“传动系”:[“后轮驱动”,“全轮驱动”]}
如果您希望简化/修改/浏览表达式,则会在regex101.com的右上角面板中进行说明。如果您愿意,也可以在this link中查看它如何与一些示例输入匹配。
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