[英]Python Beautiful Soup parse a table with a specific ID
I'm trying to get the data from a table with a specific ID which I know. 我正在尝试从具有特定ID的表中获取数据,我知道。 For some reason, the code keeps giving me a None result.
出于某种原因,代码一直给我一个无结果。
From the HTML code I'm trying to parse: 从我试图解析的HTML代码:
<table cellspacing="0" cellpadding="3" border="0" id="ctl00_SPWebPartManager1_g_c001c0d9_0cb8_4b0f_b75a_7cc3b6f7d790_ctl00_HistoryData1_gridHistoryData_DataGrid1" style="width:100%;border-collapse:collapse;">
<tr class="gridHeader" valign="top">
<td class="titleGridRegNoB" align="center" valign="top"><span dir=RTL>שווי שוק (אלפי ש"ח)</span></td>
<td class="titleGridReg" align="center" valign="top">הון רשום למסחר</td>
<td class="titleGridReg" align="center" valign="top">שער נמוך</td><td class="titleGridReg" align="center" valign="top">שער גבוה</td>
<td class="titleGridReg" align="center" valign="top">שער בסיס</td>
<td class="titleGridReg" align="center" valign="top">שער פתיחה</td><td class="titleGridReg" align="center" valign="top"><span dir="rtl">שער נעילה (באגורות)</span></td>
<td class="titleGridReg" align="center" valign="top">שער נעילה מתואם</td><td class="titleGridReg" align="center" valign="top">תאריך</td>
</tr>
<tr onmouseover="this.style.backgroundColor='#FDF1D7'" onmouseout="this.style.backgroundColor='#ffffff'">
... And so on ... 等等
My code: 我的代码:
html = br.response().read()
soup = BeautifulSoup(html)
table = soup.find(lambda tag: tag.name=='table' and tag.has_key('id') and tag['id']=="ctl00_SPWebPartManager1_g_c001c0d9_0cb8_4b0f_b75a_7cc3b6f7d790_ctl00_HistoryData1_gridHistoryData_DataGrid1")
rows = table.findAll(lambda tag: tag.name=='tr')
In [100]: print table
None
From the documentation : 从文档 :
table = soup.find('table', id="ctl00_SPWebPartManager1_g_c001c0d9_0cb8_4b0f_b75a_7cc3b6f7d790_ctl00_HistoryData1_gridHistoryData_DataGrid1")
And the for the rows line: 而对于行行:
rows = table.findAll('tr')
For the encoding problem, try decoding it from utf-8
, and re-encode it. 对于编码问题,请尝试从
utf-8
解码,然后重新编码。
html = br.response().read().decode('utf-8')
soup = BeautifulSoup(html.encode('utf-8'))
Improving upon aiKid's answer: 改进aiKid的答案:
# coding=utf-8
from bs4 import BeautifulSoup
html = u"""
<table cellspacing="0" cellpadding="3" border="0" id="ctl00_SPWebPartManager1_g_c001c0d9_0cb8_4b0f_b75a_7cc3b6f7d790_ctl00_HistoryData1_gridHistoryData_DataGrid1" style="width:100%;border-collapse:collapse;">
<tr class="gridHeader" valign="top">
<td class="titleGridRegNoB" align="center" valign="top"><span dir=RTL>שווי שוק (אלפי ש"ח)</span></td><td class="titleGridReg" align="center" valign="top">הון רשום למסחר</td><td class="titleGridReg" align="center" valign="top">שער נמוך</td><td class="titleGridReg" align="center" valign="top">שער גבוה</td><td class="titleGridReg" align="center" valign="top">שער בסיס</td><td class="titleGridReg" align="center" valign="top">שער פתיחה</td><td class="titleGridReg" align="center" valign="top"><span dir="rtl">שער נעילה (באגורות)</span>
</td><td class="titleGridReg" align="center" valign="top">שער נעילה מתואם</td><td class="titleGridReg" align="center" valign="top">תאריך</td>
</tr><tr onmouseover="this.style.backgroundColor='#FDF1D7'" onmouseout="this.style.backgroundColor='#ffffff'">
"""
soup = BeautifulSoup(html)
print soup.find_all("table",
id="ctl00_SPWebPartManager1_g_c001c0d9_0cb8_4b0f_b75a_7cc3b6f7d790_ctl00_HistoryData1_gridHistoryData_DataGrid1")
Since you're working with UTF-8 data, you need to set the string as a unicode string like so u"""(...)"""
. 由于您使用的是UTF-8数据,因此需要将字符串设置为unicode字符串,如
u"""(...)"""
。 All you need to do to work with unicode is this: 使用unicode所需要做的就是:
br.response().read().decode('utf-8')
The above will give you an ASCII string, that you can later encode into unicode. 上面将为您提供一个ASCII字符串,您可以稍后将其编码为unicode。 Like, say the string is stored in
html
, and you can encode it back to unicode using html.encode("utf-8")
. 比如说,字符串存储在
html
,您可以使用html.encode("utf-8")
其编码回unicode。 If you do this, you do not need to put the u
in front of anything. 如果你这样做,你不需要把
u
放在任何东西面前。 You can treat everything as a regular string again. 您可以再次将所有内容视为常规字符串。
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