在 Python 3 中使用 Scrapy 时出现 Twisted 导入错误

Question

我在 Python 3 中尝试使用 Scrapy 时出现以下错误。我正在使用 Ubuntu 16.04 并安装 python3-twisted 没有解决问题。

  File "/home/fran/.local/lib/python3.5/site-packages/scrapy/crawler.py", line 150, in crawl
    crawler = self._create_crawler(crawler_or_spidercls)
  File "/home/fran/.local/lib/python3.5/site-packages/scrapy/crawler.py", line 166, in _create_crawler
    return Crawler(spidercls, self.settings)
  File "/home/fran/.local/lib/python3.5/site-packages/scrapy/crawler.py", line 46, in __init__
    self.extensions = ExtensionManager.from_crawler(self)
  File "/home/fran/.local/lib/python3.5/site-packages/scrapy/middleware.py", line 56, in from_crawler
    return cls.from_settings(crawler.settings, crawler)
  File "/home/fran/.local/lib/python3.5/site-packages/scrapy/middleware.py", line 32, in from_settings
    mwcls = load_object(clspath)
  File "/home/fran/.local/lib/python3.5/site-packages/scrapy/utils/misc.py", line 44, in load_object
    mod = import_module(module)
  File "/usr/lib/python3.5/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 986, in _gcd_import
  File "<frozen importlib._bootstrap>", line 969, in _find_and_load
  File "<frozen importlib._bootstrap>", line 958, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 673, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 662, in exec_module
  File "<frozen importlib._bootstrap>", line 222, in _call_with_frames_removed
  File "/home/fran/.local/lib/python3.5/site-packages/scrapy/extensions/memusage.py", line 16, in <module>
    from scrapy.mail import MailSender
  File "/home/fran/.local/lib/python3.5/site-packages/scrapy/mail.py", line 23, in <module>
    from twisted.mail.smtp import ESMTPSenderFactory
ImportError: No module named 'twisted.mail.smtp'

Answer 1

Scrapy 的 Python 3 支持仍处于测试阶段并且（根据 release notes）

Sending emails is not supported

所以你不太可能解决这个问题。

Answer 2

Scrapy does not support sending mail with Python 3.

这是 Twisted 的一个限制，它还没有移植它的 twisted.mail 模块！
（很遗憾，拉取请求待处理）

参见：

在 Python 3 中使用 Scrapy 时出现 Twisted 导入错误

Twisted Import Error when using Scrapy in Python 3

python

ubuntu

twisted

scrapy

python-3.x