Python(Scrapy)与“import load_entry_point"的不可预测的错误； [英] Python(Scrapy) unpredictable mistake with "import load_entry_point"

问题描述

我有这样的问题，我没有用 Python 或 Scrapy 做任何事情，但是当我今天启动我的电脑时，出现了这样的错误.我找到了许多不同的帖子并尝试了一些技巧和建议，不幸的是，它们无法正常工作，我担心不会破坏其他东西.

回溯(最近一次调用最后一次):文件/usr/bin/scrapy"，第 5 行，在 <module> 中从 pkg_resources 导入 load_entry_point文件/usr/lib/python2.7/dist-packages/pkg_resources.py"，第2749行，在<module>working_set = WorkingSet._build_master()文件/usr/lib/python2.7/dist-packages/pkg_resources.py"，第 444 行，在 _build_masterws.require(__requires__)文件/usr/lib/python2.7/dist-packages/pkg_resources.py"，第725行，需要需要 = self.resolve(parse_requirements(requirements))文件/usr/lib/python2.7/dist-packages/pkg_resources.py"，第628行，解析提高 DistributionNotFound(req)pkg_resources.DistributionNotFound:服务身份

因此，也许有人有同样的错误.如果是，请告诉我您是如何解决的.

更新:我尝试了很多东西，直接搜索没有实际结果，只有 Python &Scrapy:Scrapy 版本问题 很有帮助，我已经删除了 Scrapy 并重新安装了它.魔法，但它有效.

解决方案

当时我遇到了类似的问题，这是因为 Ubuntu 包与 pip 包搞混了.

我建议您从 Ubuntu 和 Pip 中删除这两个软件包，然后重新安装.

首先通过以下命令从ubuntu中删除带有所有本地配置文件的scrapy:

<块引用>

apt-get remove --purge python-scrapy

pip卸载scrapy

完成这些操作后，您可以使用以下命令重新安装它.现在版本应该是 0.24.4.

1. 将用于签署 Scrapy 包的 GPG 密钥导入 APT 密钥环:

<块引用>

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv627220E7

2. 使用以下命令创建/etc/apt/sources.list.d/scrapy.list 文件:

<块引用>

echo 'deb http://archive.scrapy.org/ubuntu scrapy main' |须藤三通/etc/apt/sources.list.d/scrapy.list

3.更新包列表并安装scrapy-0.24包:

<块引用>

sudo apt-get 更新 &&sudo apt-get install scrapy-0.24

它应该可以工作:)

I have such problem, I did nothing with Python or Scrapy, but when I started today my computer I got such error. I have found many different posts and tried some tips and advices, unfortunately, they are do not work properly and I worry not to break something else.

Traceback (most recent call last):
  File "/usr/bin/scrapy", line 5, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 2749, in <module>
    working_set = WorkingSet._build_master()
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 444, in _build_master
    ws.require(__requires__)
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 725, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 628, in resolve
    raise DistributionNotFound(req)
pkg_resources.DistributionNotFound: service-identity

Therefore, maybe someone had the same error. If yes, please, let me know how you solved it.

UPDATE: I have tried many things and direct search was without real results, only Python & Scrapy: Issue with Scrapy version was helpful, I have deleted Scrapy and installed it again. Magic, but it works.

解决方案

I had a similar issue back then and It was because the Ubuntu package was messing with the pip package.

I recommend you to remove both packages from Ubuntu and Pip and then reinstall.

First remove scrapy with all local config file from ubuntu by following command :

apt-get remove --purge python-scrapy

pip uninstall scrapy

After these actions finished you can reinstall it using following commands.Now version should be 0.24.4.

1. Import the GPG key used to sign Scrapy packages into APT keyring:

sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 627220E7

2. Create /etc/apt/sources.list.d/scrapy.list file using the following command:

echo 'deb http://archive.scrapy.org/ubuntu scrapy main' | sudo tee /etc/apt/sources.list.d/scrapy.list

3.Update package lists and install the scrapy-0.24 package:

sudo apt-get update && sudo apt-get install scrapy-0.24

It should work :)

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