Python 如何解析属性?
如何从数据值解析值Python 如何解析属性?,python,selenium-webdriver,beautifulsoup,Python,Selenium Webdriver,Beautifulsoup,如何从数据值解析值 <a href="example.com" data-ref="TopRates" data-type="price" data-value="1212749" data-changescale="1" data-market-id="curr_one" data-symbol="curr_one">curr_one</a> 它将通过以下方式工作: >>> from bs4 import BeautifulSoup >>
<a href="example.com" data-ref="TopRates" data-type="price" data-value="1212749" data-changescale="1" data-market-id="curr_one" data-symbol="curr_one">curr_one</a>
它将通过以下方式工作:
>>> from bs4 import BeautifulSoup
>>> page = '''<a href="http://example.com" data-ref="TopRates" data-type="price" data-value="1212749" data-changescale="1" data-market-id="curr_one" data-symbol="curr_one">curr_one</a>'''
>>> soup = BeautifulSoup(page, features="html.parser")
>>> a = soup.find('a')
>>> a.attrs
{'data-changescale': '1', 'data-value': '1212749', 'data-market-id': 'curr_one', 'data-type': 'price', 'href': 'http://example.com', 'data-symbol': 'curr_one', 'data-ref': 'TopRates'}
>>>
>>> a.attrs['data-value']
'1212749'
>>>
>>来自bs4导入组
>>>页码=“”“
>>>soup=BeautifulSoup(第页,features=“html.parser”)
>>>a=汤。查找('a')
>>>a.attrs
{'data-changescale':'1','data value':'1212749','data market id':'curr_one','data type':'price','href':'http://example.com“,”数据符号“:”当前“,”数据引用“:”顶级利率“}
>>>
>>>a.attrs['data-value']
'1212749'
>>>
使用更快的CSS选择器
from bs4 import BeautifulSoup
data='''<a href="example.com" data-ref="TopRates" data-type="price" data-value="1212749" data-changescale="1" data-market-id="curr_one" data-symbol="curr_one">curr_one</a>'''
soup=BeautifulSoup(data,'html.parser')
print(soup.select_one('a[data-value]')['data-value'])
在你的情况下,这应该是有效的
soup = BeautifulSoup(browser.page_source, features="html.parser")
print(soup.select_one('a[data-value]')['data-value'])
找到元素后,可以通过以下方式获取属性值:
from bs4 import BeautifulSoup
html = '''<a href="example.com" data-ref="TopRates" data-type="price" data-value="1212749" data-changescale="1" data-market-id="curr_one" data-symbol="curr_one">curr_one</a>'''
soup = BeautifulSoup(html, features="html.parser")
print (soup.find('a')['data-value'])
soup = BeautifulSoup(browser.page_source, features="html.parser")
print(soup.select_one('a[data-value]')['data-value'])
from bs4 import BeautifulSoup
html = '''<a href="example.com" data-ref="TopRates" data-type="price" data-value="1212749" data-changescale="1" data-market-id="curr_one" data-symbol="curr_one">curr_one</a>'''
soup = BeautifulSoup(html, features="html.parser")
print (soup.find('a')['data-value'])
1212749