问题描述
是否可以在PyPy
上运行Scrapy
?我浏览了文档和github项目,但提到PyPy
的唯一地方是2年前在PyPy
上执行了一些单元测试,请参见 PyPy
支持.还有 Spy无法在PyPy中失败长时间的讨论发生了3年前没有具体的决议或后续行动.
Is it possible to run Scrapy
on PyPy
? I've looked through the documentation and the github project, but the only place where PyPy
is mentioned is that there were some unit tests being executed on PyPy
2 years ago, see PyPy
support. There is also Scrapy fails in PyPy long discussion happened 3 years ago without a concrete resolution or a follow-up.
据我了解,主要的Scrapy依赖项Twisted
是已知可用于PyPy
. Scrapy还使用lxml
进行HTML解析,该解析具有 PyPy
友好的fork .完全支持其他依赖项 pyOpenSSL
(感谢@Glyph的评论)
From what I understand, the main Scrapy's dependency Twisted
is known to work on PyPy
. Scrapy also uses lxml
for HTML parsing, which has a PyPy
-friendly fork. The other dependency, pyOpenSSL
is fully supported (thanks to @Glyph's comment).
推荐答案
是. :-)
更详细一点,我已经在盒子上安装了pypy 2.6.0(带有pip)版本.只需运行pip install scrapy
就对我有用了.原来,我需要为lxml 一些额外的库.之后就没事了.
In a bit more detail, I already had a version of pypy 2.6.0 (with pip) installed on my box. Simply running pip install scrapy
nearly just worked for me. Turns out I needed some extra libraries for lxml. After that it was fine.
安装后,我可以运行 dmoz教程.例如:
Once installed, I could run the dmoz tutorial. For example:
[user@localhost scrapy_proj]# scrapy crawl dmoz
2015-06-30 14:34:45 [scrapy] INFO: Scrapy 1.0.0 started (bot: scrapy_proj)
2015-06-30 14:34:45 [scrapy] INFO: Optional features available: ssl, http11
2015-06-30 14:34:45 [scrapy] INFO: Overridden settings: {'BOT_NAME': 'scrapy_proj', 'NEWSPIDER_MODULE': 'scrapy_proj.spiders', 'SPIDER_MODULES': ['scrapy_proj.spiders']}
2015-06-30 14:34:45 [py.warnings] WARNING: :0: UserWarning: You do not have a working installation of the service_identity module: 'No module named service_identity'. Please install it from <https://pypi.python.org/pypi/service_identity> and make sure all of its dependencies are satisfied. Without the service_identity module and a recent enough pyOpenSSL to support it, Twisted can perform only rudimentary TLS client hostname verification. Many valid certificate/hostname mappings may be rejected.
2015-06-30 14:34:45 [scrapy] INFO: Enabled extensions: CoreStats, TelnetConsole, CloseSpider, LogStats, SpiderState
2015-06-30 14:34:45 [scrapy] INFO: Enabled downloader middlewares: HttpAuthMiddleware, DownloadTimeoutMiddleware, UserAgentMiddleware, RetryMiddleware, DefaultHeadersMiddleware, MetaRefreshMiddleware, HttpCompressionMiddleware, RedirectMiddleware, CookiesMiddleware, ChunkedTransferMiddleware, DownloaderStats
2015-06-30 14:34:45 [scrapy] INFO: Enabled spider middlewares: HttpErrorMiddleware, OffsiteMiddleware, RefererMiddleware, UrlLengthMiddleware, DepthMiddleware
2015-06-30 14:34:45 [scrapy] INFO: Enabled item pipelines:
2015-06-30 14:34:45 [scrapy] INFO: Spider opened
2015-06-30 14:34:45 [scrapy] INFO: Crawled 0 pages (at 0 pages/min), scraped 0 items (at 0 items/min)
2015-06-30 14:34:45 [scrapy] DEBUG: Telnet console listening on 127.0.0.1:6023
2015-06-30 14:34:46 [scrapy] DEBUG: Crawled (200) <GET http://www.dmoz.org/Computers/Programming/Languages/Python/Resources/> (referer: None)
2015-06-30 14:34:46 [scrapy] DEBUG: Crawled (200) <GET http://www.dmoz.org/Computers/Programming/Languages/Python/Books/> (referer: None)
2015-06-30 14:34:46 [scrapy] INFO: Closing spider (finished)
2015-06-30 14:34:46 [scrapy] INFO: Dumping Scrapy stats:
{'downloader/request_bytes': 514,
'downloader/request_count': 2,
'downloader/request_method_count/GET': 2,
'downloader/response_bytes': 16286,
'downloader/response_count': 2,
'downloader/response_status_count/200': 2,
'finish_reason': 'finished',
'finish_time': datetime.datetime(2015, 6, 30, 13, 34, 46, 219002),
'log_count/DEBUG': 3,
'log_count/INFO': 7,
'log_count/WARNING': 1,
'response_received_count': 2,
'scheduler/dequeued': 2,
'scheduler/dequeued/memory': 2,
'scheduler/enqueued': 2,
'scheduler/enqueued/memory': 2,
'start_time': datetime.datetime(2015, 6, 30, 13, 34, 45, 652421)}
2015-06-30 14:34:46 [scrapy] INFO: Spider closed (finished)
根据要求,以下是我正在运行的版本的更多信息:
And as requested, here's some more info on the version I'm running:
[user@localhost scrapy_proj]# which scrapy
/opt/pypy/bin/scrapy
[user@localhost scrapy_proj]# scrapy version
2015-06-30 15:04:42 [scrapy] INFO: Scrapy 1.0.0 started (bot: scrapy_proj)
2015-06-30 15:04:42 [scrapy] INFO: Optional features available: ssl, http11
2015-06-30 15:04:42 [scrapy] INFO: Overridden settings: {'BOT_NAME': 'scrapy_proj', 'NEWSPIDER_MODULE': 'scrapy_proj.spiders', 'SPIDER_MODULES': ['scrapy_proj.spiders']}
Scrapy 1.0.0
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