漂亮的汤。在几次发现后发现错误

Question

我试着用BeautifulSoup编辑一个html文件。在开始时遇到了一些问题之后，我想我终于完成了。但是现在我在我的一个循环中得到了一个随机错误，我真的不明白。我执行了一些检查，也许可以找到错误，但这对我没有帮助。我怀疑某种“过载”，但不知道如何修复它

from bs4 import BeautifulSoup


html_file = '****' #html file location

with open(html_file, "r") as file_content:
    data = file_content.read()
soup = BeautifulSoup(data, 'html.parser')

x = 2
y = 1
print(soup.find(id="2-1"))
old_line = soup.find(id=f"{x}-{y}").parent
print(old_line)

x = 1
while x < 10:
    y = 1
    while y < 6:
        print(f"x={x}")
        print(f"y={y}")
        print(f"{x}-{y}")

        print(soup.find("td", id=f"{x}-{y}"))
        old_line = soup.find("td", id=f"{x}-{y}").parent
        new_line = soup.find("td", id=f"{x+1}-{y}")
        new_line['id'] = f"{x}-{y}"
        old_line.find("td", id=f"{x}-{y}").replace_with(new_line)
        print(old_line)
        y += 1
    x += 1

输出：

<td class="kleine-tabelle" id="2-1"><img height="40" src="tumbleweed.gif" width="40"/></td>
<tr>
<td class="kleine-tabelle" id="2-1"><img height="40" src="tumbleweed.gif" width="40"/></td>
<td class="kleine-tabelle" id="2-2"><img height="40" src="tumbleweed.gif" width="40"/></td>
</tr>
x=1
y=1
1-1
<td class="kleine-tabelle" id="1-1"><img height="40" src="tumbleweed.gif" width="40"/></td>
<tr>
<td class="kleine-tabelle" id="1-1"><img height="40" src="tumbleweed.gif" width="40"/></td>
<td class="kleine-tabelle" id="1-2"><img height="40" src="tumbleweed.gif" width="40"/></td>
</tr>
x=1
y=2
1-2
<td class="kleine-tabelle" id="1-2"><img height="40" src="tumbleweed.gif" width="40"/></td>
<tr>
<td class="kleine-tabelle" id="1-1"><img height="40" src="tumbleweed.gif" width="40"/></td>
<td class="kleine-tabelle" id="1-2"><img height="40" src="tumbleweed.gif" width="40"/></td>
</tr>
x=1
y=3
1-3
<td class="kleine-tabelle" id="1-3"><img height="40" src="tumbleweed.gif" width="40"/></td>
<tr>
<td class="kleine-tabelle" id="1-3"><img height="40" src="tumbleweed.gif" width="40"/></td>
<td class="kleine-tabelle" id="1-4"><img height="40" src="tumbleweed.gif" width="40"/></td>
</tr>
x=1
y=4
1-4
<td class="kleine-tabelle" id="1-4"><img height="40" src="tumbleweed.gif" width="40"/></td>
<tr>
<td class="kleine-tabelle" id="1-3"><img height="40" src="tumbleweed.gif" width="40"/></td>
<td class="kleine-tabelle" id="1-4"><img height="40" src="tumbleweed.gif" width="40"/></td>
</tr>
x=1
y=5
1-5
<td id="1-5"><span class="player-text">scrotiemcboogerballs</span> greift an<br/>Er verursacht <span class="red-text">12345678</span> Schaden</td>
<tr style="border:0px black none; margin: 0px; padding: 0px">
<td class="grafik-spalte">
<table>
<tr>
<td class="kleine-tabelle" id="1-1"><img height="40" src="tumbleweed.gif" width="40"/></td>
<td class="kleine-tabelle" id="1-2"><img height="40" src="tumbleweed.gif" width="40"/></td>
</tr>
<tr>
<td class="kleine-tabelle" id="1-3"><img height="40" src="tumbleweed.gif" width="40"/></td>
<td class="kleine-tabelle" id="1-4"><img height="40" src="tumbleweed.gif" width="40"/></td>
</tr>
</table>
</td>
<td id="1-5"><span class="enemy-text">Biosellerie</span> greift an<br/>Er verursacht <span class="red-text">5743841</span> Schaden</td>
</tr>
x=2
y=1
2-1
None
Traceback (most recent call last):
  File "****", line 25, in <module>
    old_line = soup.find("td", id=f"{x}-{y}").parent
AttributeError: 'NoneType' object has no attribute 'parent'

有什么想法吗？如果我的错误很简单，请原谅我，编码只是一种爱好，我几乎不知道。谢谢大家!