Scrapy No module named _sqlite3 错误

本文记录了在使用Scrapy爬虫框架时遇到的Nomodulenamed_sqlite3错误,并给出了详细的解决步骤,包括安装sqlite-devel包及重新编译安装Python。

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一、现象:Scrapy运行时提示 No module named _sqlite3,但是在python中import sqlite3没有问题。


2016-09-27 09:34:14 [scrapy] INFO: Scrapy 1.1.3 started (bot: IBDP)

2016-09-27 09:34:14 [scrapy] INFO: Overridden settings: {'NEWSPIDER_MODULE': 'IBDP.spiders', 'LOG_LEVEL': 'INFO', 'CO

NCURRENT_REQUESTS': 1, 'SPIDER_MODULES': ['IBDP.spiders'], 'BOT_NAME': 'IBDP', 'DOWNLOAD_DELAY': 10}

2016-09-27 09:34:14 [scrapy] INFO: Enabled extensions:

['scrapy.extensions.logstats.LogStats',

 'scrapy.extensions.telnet.TelnetConsole',

 'scrapy.extensions.corestats.CoreStats']

2016-09-27 09:34:14 [scrapy] INFO: Enabled downloader middlewares:

['scrapy.downloadermiddlewares.httpauth.HttpAuthMiddleware',

 'scrapy.downloadermiddlewares.downloadtimeout.DownloadTimeoutMiddleware',

 'scrapy.downloadermiddlewares.useragent.UserAgentMiddleware',

 'scrapy.downloadermiddlewares.retry.RetryMiddleware',

 'scrapy.downloadermiddlewares.defaultheaders.DefaultHeadersMiddleware',

 'scrapy.downloadermiddlewares.redirect.MetaRefreshMiddleware',

 'scrapy.downloadermiddlewares.httpcompression.HttpCompressionMiddleware',

 'scrapy.downloadermiddlewares.redirect.RedirectMiddleware',

 'scrapy.downloadermiddlewares.cookies.CookiesMiddleware',

 'scrapy.downloadermiddlewares.chunked.ChunkedTransferMiddleware',

 'scrapy.downloadermiddlewares.stats.DownloaderStats']

2016-09-27 09:34:14 [scrapy] INFO: Enabled spider middlewares:

['scrapy.spidermiddlewares.httperror.HttpErrorMiddleware',

 'scrapy.spidermiddlewares.offsite.OffsiteMiddleware',

 'scrapy.spidermiddlewares.referer.RefererMiddleware',

 'scrapy.spidermiddlewares.urllength.UrlLengthMiddleware',

 'scrapy.spidermiddlewares.depth.DepthMiddleware']

2016-09-27 09:34:14 [scrapy] INFO: Enabled item pipelines:

['IBDP.pipelines.MySQLPipeline']

2016-09-27 09:34:14 [scrapy] INFO: Spider opened

Unhandled error in Deferred:

2016-09-27 09:34:14 [twisted] CRITICAL: Unhandled error in Deferred:



Traceback (most recent call last):

  File "/usr/local/python2.7/lib/python2.7/site-packages/scrapy/commands/crawl.py", line 57, in run

    self.crawler_process.crawl(spname, **opts.spargs)

  File "/usr/local/python2.7/lib/python2.7/site-packages/scrapy/crawler.py", line 163, in crawl

    return self._crawl(crawler, *args, **kwargs)

  File "/usr/local/python2.7/lib/python2.7/site-packages/scrapy/crawler.py", line 167, in _crawl

    d = crawler.crawl(*args, **kwargs)

  File "/usr/local/python2.7/lib/python2.7/site-packages/Twisted-15.2.1-py2.7-linux-x86_64.egg/twisted/internet/defer

.py", line 1274, in unwindGenerator

    return _inlineCallbacks(None, gen, Deferred())

--- <exception caught here> ---

  File "/usr/local/python2.7/lib/python2.7/site-packages/Twisted-15.2.1-py2.7-linux-x86_64.egg/twisted/internet/defer

.py", line 1128, in _inlineCallbacks

    result = g.send(result)

  File "/usr/local/python2.7/lib/python2.7/site-packages/scrapy/crawler.py", line 90, in crawl

    six.reraise(*exc_info)

  File "/usr/local/python2.7/lib/python2.7/site-packages/scrapy/crawler.py", line 74, in crawl

    yield self.engine.open_spider(self.spider, start_requests)

exceptions.ImportError: No module named _sqlite3

2016-09-27 09:34:14 [twisted] CRITICAL: 



二、解决方法:

安装 sqlite-devel,重新安装python

yum install sqlite-devel


cd Python-2.7.11


make

make install

在运行 Scrapy 项目时,若出现 `ModuleNotFoundError: No module named &#39;scrapy_redis&#39;` 错误,说明当前 Python 环境中未安装 `scrapy_redis` 模块或安装不完整。以下是解决该问题的常见方法: ### 1. 安装 `scrapy_redis` 模块 确保 `scrapy_redis` 已正确安装。可以通过以下命令安装: ```bash pip install scrapy-redis ``` 该命令将安装适用于 Scrapy 的 Redis 集成组件,使 Scrapy 能够使用 Redis 作为调度器和去重指纹存储[^1]。 ### 2. 检查 Python 环境与虚拟环境配置 如果已安装 `scrapy_redis` 但仍然出现模块缺失错误,可能是当前运行的 Python 环境与安装模块的环境不一致。请确认以下几点: - 使用 `which python` 或 `Get-Command python`(Windows)检查当前运行的 Python 解释器路径。 - 如果使用了虚拟环境,请确保已激活对应的虚拟环境,并在该环境中执行 `pip install scrapy-redis`。 ### 3. 验证模块是否成功导入 在 Scrapy 项目的 `settings.py` 文件中,需正确配置 Redis 相关设置。确保以下配置项已添加: ```python # 启用 Redis 调度器 SCHEDULER = "scrapy_redis.scheduler.Scheduler" # 启用 Redis 去重 DUPEFILTER_CLASS = "scrapy_redis.dupefilter.RFPDupeFilter" # Redis 地址 REDIS_URL = &#39;redis://localhost:6379&#39; ``` 如果出现 `NameError: Module &#39;scrapy_redis.scheduler&#39; doesn&#39;t define any object named &#39;Scheduler&#39;`,请检查 `scrapy_redis` 的版本是否与 Scrapy 兼容。可以尝试升级或降级版本: ```bash pip install scrapy-redis --upgrade ``` 或 ```bash pip install scrapy-redis==0.6.8 ``` ### 4. 重新安装 Scrapy 及相关依赖 如果上述方法无效,可尝试重新安装 Scrapy 及其依赖库: ```bash pip uninstall scrapy pip install scrapy pip install scrapy-redis ``` 此过程可修复可能存在的依赖冲突或损坏的安装。 ---
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