How to extract data by matching a variable with the tag value in python - python-2.7

Question

!--This is the first table from where i get 4 id's (abc1---abc4) which i need to match with the table below and get the required data--!
<table width="100%" border="0" class=""BigClass">
<tbody>..</tbody>
</table>
!--This is the second table --!
<table width="100%" border="0" class=""BigClass">
<tbody>
<tr align="left">
<td valign="top" colspan="2">
<strong> 1.
First Topic
</strong>
<a name="abc1" id="abc1"></a>
</td>
</tr>
!--This is the place where the first speaker and his/her text comes---!
<tr align="left">
<td style="text-align:justify;line-height:2;padding-right:10px;" colspan="2">
<strong> " First Speaker " </strong>
<br>
" Some Text "
</td>
</tr>
!--This is where the second speaker comes in---!
<tr align="left">
<td style="text-align:justify;line-height:2;padding-right:10px;" colspan="2">
<strong> " Second Speaker " </strong>
<br>
" Some Text "
</td>
</tr>
<tr><td colspan="2"><br></td></tr>
<tr><td colspan="2"><br></td></tr>
!--Then here comes the row with another id--!
<tr align="left">
<td valign="top" colspan="2">
<strong> 2.
Second Topic
</strong>
<a name="abc2" id="abc2"></a>
</td>
</tr>
!--Just like before, this will also have set of speakers who have some text--!
I have two tables with the same class name which is BigClass. From the first table i extracted 4 ids which are abc1,abc2,abc3,abc4.
Now i want to check that if these ids is present in this second table(which it is)
after it matches with the ids in the second table, i want to extract the speakers and the text of those speakers.
You can see the code structure for the second table rom which i want to extract the data.

Answer 1

It seems the best way to extract speaker and text information is to extract all ids in a list and all speaker info in another list. Then just cross-reference the ids needed and get the corresponding speaker info.
I create a dictionary here with key as ids and value as speaker info. I found the speaker info by the condition that the td field has a style attribute defined in all fields containing speaker info.
For extracting info from HTML, I am using the BeautifulSoup library.
from bs4 import BeautifulSoup
from itertools import izip
soup = BeautifulSoup(open('table.html'))
idList = []
speakerList = []
idsRequired = ['abc1','abc2']
for a in soup.findAll('a'):
if 'id' in a.attrs.keys():
idList.append(a.attrs['id'])
for i in soup.findAll('td'):
if 'style' in i.attrs.keys():
speakerList.append(i.text)
for key,value in izip(idList,speakerList):
if key in idsRequired:
print value
This gives me the output as:
" First speaker "
" Some text "
" Second speaker "
" Some text "