BeautifulSoup 与 Jython
我刚刚尝试使用 Jython (2.5.1) 运行 BeautifulSoup (3.1.0.1)，我惊讶地发现它比 CPython 慢了多少。解析页面 (http://www.fixprotocol.org/specifications/fields/5000- 5999）使用 CPython 只需不到一秒（准确地说是 0.844 秒）。使用 Jython 需要 564 秒——几乎是原来的 700 倍。
有人能证实这个结果吗？ Jython 的运行速度比 CPython 慢 700 倍似乎不合理。也许我的设置有问题。
[编辑] 这是我用来测试这个的代码（当然我下载了上面提到的 HTML 文件）：
import time
from BeautifulSoup import BeautifulSoup
data = open("fix-5000-5999.html").read()
start = time.time()
soup = BeautifulSoup(data)
print time.time() - start
I just tried to run BeautifulSoup (3.1.0.1) with Jython (2.5.1) and I was amazed to see how much slower it was than CPython. Parsing a page (http://www.fixprotocol.org/specifications/fields/5000-5999) with CPython took just under a second (0.844 second to be exact). With Jython it took 564 seconds - almost 700 times as much.
Can anyone confirm this result? It's doesn't seem reasonable for Jython to run 700 times slower than CPython. Perhaps something is wrong with my setup.
[Edit] Here's the code I used to test this (naturally I downloaded the above mentioned HTML file):
import time
from BeautifulSoup import BeautifulSoup
data = open("fix-5000-5999.html").read()
start = time.time()
soup = BeautifulSoup(data)
print time.time() - start
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
我可以证实类似的发现。
英特尔 Mac、OS X 10.6.1、Java 1.6.0_15 64 位、Jython 2.5.1。
使用 CPython 2.6.1 运行代码需要 0.1–0.2 秒，但使用 Jython 运行至少需要数十秒；我没有等超过30。它也使用了大量的CPU。
我尝试了 Beautiful Soup 3.0.7a，因为它使用不同的解析器，但结果相同。
有趣的是，我尝试在 不同的 HTML 文件 上运行您的代码，效果很好。但它看起来仍然比 CPython 慢很多：Jython 花了 1.02-1.3 秒； CPython 的得分为 0.019–0.020。
我目前没有任何建议，除了您应该考虑在 上提出这个问题jython-users 列表；我发现那里的社区（包括首席开发人员）反应灵敏且乐于助人。
祝你好运！
I can confirm similar findings.
Intel Mac, OS X 10.6.1, Java 1.6.0_15 64-bit, Jython 2.5.1.
Running your code with CPython 2.6.1 takes 0.1–0.2 seconds, but running it with Jython takes at least tens of seconds; I didn't wait more than 30. It also uses a lot of CPU.
I tried Beautiful Soup 3.0.7a, because it uses a different parser, but had the same results.
Interestingly, I tried running your code on a different HTML file and it worked fine. But it still seemed much slower than CPython: Jython took 1.02–1.3 seconds; CPython took 0.019–0.020.
I don't have any suggestions at this point except that you should consider asking this question on the jython-users list; I've found the community there, which includes the lead developer, to be responsive and helpful.
Good luck!