我正在嘗試決議本地 html 檔案，我不知道為什么相同的代碼在示例 html 文本和整個 html 檔案之間會產生不同的結果。任何人都可以幫忙嗎？對此，我真的非常感激。示例 html 文本：
s = '''
<table width=90%>
<tr>
<td align="center" width=18%></td>
<td align="left" width=15%></td>
</tr>
</table>
<table border>
<tr>
<td nowrap="nowrap"><b>Rec</b></td>
<td align="RIGHT" nowrap="nowrap"><b>ID</b></td>
</tr>
<tr>
<td align="RIGHT" nowrap="nowrap" VALIGN=TOP>1</td>
<td nowrap="nowrap" VALIGN=TOP><a href="smthing?DID=ID">ID<br />100100</a></td>
</tr>
</table>
<p>
<style type="text/css">
.....
</style>
<table border>
<tr>
<td nowrap="nowrap"><b>Rec</b></td>
<td align="RIGHT" nowrap="nowrap"><b>ID</b></td>
</tr>
<tr>
<td align="RIGHT" nowrap="nowrap" VALIGN=TOP>2</td>
<td nowrap="nowrap" VALIGN=TOP><a href="smthing?DID=ID">ID<br />101101</a></td>
</tr>
</table>
'''
我試過以下：
''''
# with open('myfile.html', 'r', encoding='utf-8') as f: # when use the whole file
# s = f.read() # when use the whole file
soup = BeautifulSoup(s, "html.parser")
tables = [
[
[td.get_text(strip=True) for td in tr.find_all('td')]
for tr in table.find_all('tr')
]
for table in soup.find_all('table')
]
table_data = [i.text for i in soup.find_all('td')]
print(table_data)
'''' 預期輸出：
Rec ID
1 ID100100
2 ID101101
當前輸出為：
['', '', 'Rec', 'ID', '1', 'ID100100', 'Rec', 'ID', '2', 'ID101101']
另外，當我用整個 HTML 檔案實作相同的代碼時，結果如下所示，我在這里錯過了什么嗎：
'', '</tr>', '', '</table>', '', '</table>', '', '</center>', '', '<hr />', '', '<center>', '',
uj5u.com熱心網友回復：
您可以應用串列切片
from bs4 import BeautifulSoup
s = '''
<table width=90%>
<tr>
<td align="center" width=18%></td>
<td align="left" width=15%></td>
</tr>
</table>
<table border>
<tr>
<td nowrap="nowrap"><b>Rec</b></td>
<td align="RIGHT" nowrap="nowrap"><b>ID</b></td>
</tr>
<tr>
<td align="RIGHT" nowrap="nowrap" VALIGN=TOP>1</td>
<td nowrap="nowrap" VALIGN=TOP><a href="smthing?DID=ID">ID<br />100100</a></td>
</tr>
</table>
<p>
<style type="text/css">
.....
</style>
<table border>
<tr>
<td nowrap="nowrap"><b>Rec</b></td>
<td align="RIGHT" nowrap="nowrap"><b>ID</b></td>
</tr>
<tr>
<td align="RIGHT" nowrap="nowrap" VALIGN=TOP>2</td>
<td nowrap="nowrap" VALIGN=TOP><a href="smthing?DID=ID">ID<br />101101</a></td>
</tr>
</table>
'''
soup = BeautifulSoup(s, "html.parser")
table = soup.find_all('table')[2]
#print(len(table))
data=[]
table_data = [i.text for i in soup.find_all('td')]
rec=table_data[-3]
num_1= table_data[-5]
num_2= table_data[-1]
data.append([rec,num_1,num_2])
print(data)
輸出：
[['ID', 'ID100100', 'ID101101']]
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