Question

大家早上好

首先，我想非常清楚地表明，我检查过是否曾问过这个问题，如果已经回答过，我将解决该问题。我找到了这个： ModuleNotFoundError: No module named 'Scrapy' 这样做已经一年多了，答案并不能解决与我作为撰写人有关的任何问题。

我认为MacO出了点问题。当我像在https://scrapy.org上编写这段代码时，在安装python3和scrapy之后根本不起作用

使用

brew install python3

为了抓人

pip install scrapy

然后我使用来自scrapy网站的代码：

import scrapy

class BlogSpider(scrapy.Spider):
    name = 'blogspider'
    start_urls = ['https://fr.wikipedia.org/wiki/Catégorie:Personnage_d%27animation']

    def parse(self, response):
        for title in response.css('div#mw-pages div.mw-category li'):
            yield {'character': title.css('a ::text').extract_first()}

然后我收到两种消息：

如果我运行代码：

scrapy runspider myspider.py

我收到消息：

bash: scrapy: command not found

如果我打开python3并写：

import scrapy

我收到此消息：

ModuleNotFoundError: No module named 'scrapy'

有人可以帮我解决这个问题，因为我不记得该怎么办了，我已经卸载了python和scrapy，但是没有任何改变。

然后我用了：

pip3 install scrapy

正如DavidG告诉我的尝试

但我收到此消息：

-bash: pip3: command not found

因此，在进行了几次搜索之后，我只是尝试重新安装Python3，所以我使用了：

brew install python3

所以我写道：

pip3 --version

并显示了此内容：

pip 10.0.1 from /usr/local/lib/python3.7/site-packages/pip (python 3.7)

下一步：

scrapy --version

并收到：

Scrapy 1.5.1 - no active project

所以我尝试再次使用该命令：

scrapy runspider myspider.py

并收到了此消息：

2018-07-18 20:11:49 [scrapy.utils.log] INFO: Scrapy 1.5.1 started (bot: scrapybot)
2018-07-18 20:11:49 [scrapy.utils.log] INFO: Versions: lxml 4.2.3.0, libxml2 2.9.4, cssselect 1.0.3, parsel 1.5.0,w3lib 1.19.0, Twisted 18.7.0, Python 3.7.0 (default, Jun 29 2018, 20:13:13) - [Clang 9.1.0 (clang-902.0.39.2)], pyOpenSSL 18.0.0 (OpenSSL 1.1.0h  27 Mar 2018), cryptography 2.3, Platform Darwin-17.6.0-x86_64-i386-64bit
2018-07-18 20:11:49 [scrapy.crawler] INFO: Overridden settings: {'SPIDER_LOADER_WARN_ONLY': True}
Traceback (most recent call last):
  File "/usr/local/bin/scrapy", line 11, in <module>
    sys.exit(execute())
  File "/usr/local/lib/python3.7/site-packages/scrapy/cmdline.py", line 150, in execute
    _run_print_help(parser, _run_command, cmd, args, opts)
  File "/usr/local/lib/python3.7/site-packages/scrapy/cmdline.py", line 90, in _run_print_help
    func(*a, **kw)
  File "/usr/local/lib/python3.7/site-packages/scrapy/cmdline.py", line 157, in _run_command
    cmd.run(args, opts)
  File "/usr/local/lib/python3.7/site-packages/scrapy/commands/runspider.py", line 88, in run
    self.crawler_process.crawl(spidercls, **opts.spargs)
  File "/usr/local/lib/python3.7/site-packages/scrapy/crawler.py", line 170, in crawl
    crawler = self.create_crawler(crawler_or_spidercls)
  File "/usr/local/lib/python3.7/site-packages/scrapy/crawler.py", line 198, in create_crawler
    return self._create_crawler(crawler_or_spidercls)
  File "/usr/local/lib/python3.7/site-packages/scrapy/crawler.py", line 203, in _create_crawler
    return Crawler(spidercls, self.settings)
  File "/usr/local/lib/python3.7/site-packages/scrapy/crawler.py", line 55, in __init__
    self.extensions = ExtensionManager.from_crawler(self)
  File "/usr/local/lib/python3.7/site-packages/scrapy/middleware.py", line 58, in from_crawler
    return cls.from_settings(crawler.settings, crawler)
  File "/usr/local/lib/python3.7/site-packages/scrapy/middleware.py", line 34, in from_settings
    mwcls = load_object(clspath)
  File "/usr/local/lib/python3.7/site-packages/scrapy/utils/misc.py", line 44, in load_object
    mod = import_module(module)
  File "/usr/local/Cellar/python/3.7.0/Frameworks/Python.framework/Versions/3.7/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/usr/local/lib/python3.7/site-packages/scrapy/extensions/telnet.py", line 12, in <module>
    from twisted.conch import manhole, telnet
  File "/usr/local/lib/python3.7/site-packages/twisted/conch/manhole.py", line 154
    def write(self, data, async=False):
                              ^
SyntaxError: invalid syntax

有人可以告诉我发生了什么事以及如何纠正它吗？

Answer 1

因此，在以下方面的帮助和解释之后：

@DavidG

@phd

@ DanielR.Livingston

我认为这不是计算机问题，但这全是兼容性问题。它不能解决我的问题，因为这是我在MOOC中找到的一种练习，但是由于已经完成了一段时间，因此它不能以相同的方式起作用，但是至少我可以继续前进，因为我可以不敢再做任何事情了。

谢谢大家

在MacO上出现“ ModuleNotFoundError：没有名为'scrapy'的模块”和“ bash：scrapy：找不到命令”

1 个答案: