推荐学习书目
› Learn Python the Hard Way
Python Sites
› PyPI - Python Package Index
› http://diveintopython.org/toc/index.html
› Pocoo
值得关注的项目
› PyPy
› Celery
› Jinja2
› Read the Docs
› gevent
› pyenv
› virtualenv
› Stackless Python
› Beautiful Soup
› 结巴中文分词
› Green Unicorn
› Sentry
› Shovel
› Pyflakes
› pytest
Python 编程
› pep8 Checker
Styles
› PEP 8
› Google Python Style Guide
› Code Style from The Hitchhiker's Guide
这是一个创建于 2990 天前的主题，其中的信息可能已经有所发展或是发生改变。
OS X 安装了从 python 官网下的 3.5.2 的文件，然后准备安装 scrapy ，用的 Homebrew ，碰上了系统自带版本的梗，准备卸载系统自带 python ，网上搜了教程下小手颤抖，听说卸载系统自带 2.7 版本是作死行为，于是乖乖模仿各种网上的其它教程进行尝试。。。无数次失败之后。忽然发现自己的 pip 命令失效了（到现在还不知道为毛失效。有请大神解答。。。。）
jomato-MacBook-Pro:~ xxx$ sudo pip install Scrapy
sudo: pip: command not found
于是安静地重新 get 了一遍 pip
jomato-MacBook-Pro:~ xxx$ sudo python get-pip.py
The directory '/Users/xxx/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/xxx/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Requirement already up-to-date: pip in /Library/Python/2.7/site-packages
就在这个地方我忽然想起了之前安装好 pip ，直接执行 scrapy 安装命令，是调用 2.7 的版本，我如果 get python3 里面的 pip ，然后直接安装 scrapy ，系统是不是会直接调用 python3 的版本对 scrapy 进行安装呢？于是尝试了一下。
jomato-MacBook-Pro:~ xxx$ sudo python3 get-pip.py
The directory '/Users/xxx/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/xxx/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting pip
Downloading pip-8.1.2-py2.py3-none-any.whl (1.2MB)
100% |████████████████████████████████| 1.2MB 1.1MB/s
Collecting wheel
Downloading wheel-0.29.0-py2.py3-none-any.whl (66kB)
100% |████████████████████████████████| 71kB 5.4MB/s
Installing collected packages: pip, wheel
Found existing installation: pip 8.1.1
Uninstalling pip-8.1.1:
Successfully uninstalled pip-8.1.1
Successfully installed pip-8.1.2 wheel-0.29.0
jomato-MacBook-Pro:~ xxx$ sudo pip install Scrapy
The directory '/Users/xxx/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/xxx/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting Scrapy
Downloading Scrapy-1.1.2-py2.py3-none-any.whl (295kB)
100% |████████████████████████████████| 296kB 1.6MB/s
Collecting cssselect>=0.9 (from Scrapy)
Downloading cssselect-0.9.2-py2.py3-none-any.whl
Collecting six>=1.5.2 (from Scrapy)
Downloading six-1.10.0-py2.py3-none-any.whl
Collecting PyDispatcher>=2.0.5 (from Scrapy)
Downloading PyDispatcher-2.0.5.tar.gz
Collecting service-identity (from Scrapy)
Downloading service_identity-16.0.0-py2.py3-none-any.whl
Collecting parsel>=0.9.3 (from Scrapy)
Downloading parsel-1.0.3-py2.py3-none-any.whl
Collecting Twisted>=10.0.0 (from Scrapy)
Downloading Twisted-16.4.0.tar.bz2 (3.0MB)
100% |████████████████████████████████| 3.0MB 392kB/s
Collecting queuelib (from Scrapy)
Downloading queuelib-1.4.2-py2.py3-none-any.whl
Collecting w3lib>=1.14.2 (from Scrapy)
Downloading w3lib-1.15.0-py2.py3-none-any.whl
Collecting lxml (from Scrapy)
Downloading lxml-3.6.4.tar.gz (3.7MB)
100% |████████████████████████████████| 3.7MB 268kB/s
Collecting pyOpenSSL (from Scrapy)
Downloading pyOpenSSL-16.1.0-py2.py3-none-any.whl (43kB)
100% |████████████████████████████████| 51kB 5.6MB/s
Collecting attrs (from service-identity->Scrapy)
Downloading attrs-16.0.0-py2.py3-none-any.whl
Collecting pyasn1 (from service-identity->Scrapy)
Downloading pyasn1-0.1.9-py2.py3-none-any.whl
Collecting pyasn1-modules (from service-identity->Scrapy)
Downloading pyasn1_modules-0.0.8-py2.py3-none-any.whl
Collecting zope.interface>=4.0.2 (from Twisted>=10.0.0->Scrapy)
Downloading zope.interface-4.2.0-cp35-cp35m-macosx_10_9_x86_64.whl (130kB)
100% |████████████████████████████████| 133kB 838kB/s
Collecting cryptography>=1.3.4 (from pyOpenSSL->Scrapy)
Downloading cryptography-1.5-cp35-cp35m-macosx_10_10_x86_64.whl (1.4MB)
100% |████████████████████████████████| 1.4MB 539kB/s
Requirement already satisfied (use --upgrade to upgrade): setuptools in /Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages (from zope.interface>=4.0.2->Twisted>=10.0.0->Scrapy)
Collecting idna>=2.0 (from cryptography>=1.3.4->pyOpenSSL->Scrapy)
Downloading idna-2.1-py2.py3-none-any.whl (54kB)
100% |████████████████████████████████| 61kB 5.6MB/s
Collecting cffi>=1.4.1 (from cryptography>=1.3.4->pyOpenSSL->Scrapy)
Downloading cffi-1.7.0-cp35-cp35m-macosx_10_10_x86_64.whl (154kB)
100% |████████████████████████████████| 163kB 1.2MB/s
Collecting pycparser (from cffi>=1.4.1->cryptography>=1.3.4->pyOpenSSL->Scrapy)
Downloading pycparser-2.14.tar.gz (223kB)
100% |████████████████████████████████| 225kB 1.2MB/s
Installing collected packages: cssselect, six, PyDispatcher, attrs, pyasn1, idna, pycparser, cffi, cryptography, pyOpenSSL, pyasn1-modules, service-identity, lxml, w3lib, parsel, zope.interface, Twisted, queuelib, Scrapy
Running setup.py install for PyDispatcher ... done
Running setup.py install for pycparser ... done
Running setup.py install for lxml ... done
Running setup.py install for Twisted ... done
Successfully installed PyDispatcher-2.0.5 Scrapy-1.1.2 Twisted-16.4.0 attrs-16.0.0 cffi-1.7.0 cryptography-1.5 cssselect-0.9.2 idna-2.1 lxml-3.6.4 parsel-1.0.3 pyOpenSSL-16.1.0 pyasn1-0.1.9 pyasn1-modules-0.0.8 pycparser-2.14 queuelib-1.4.2 service-identity-16.0.0 six-1.10.0 w3lib-1.15.0 zope.interface-4.2.0
除去前面 python3 的安装和 Homebrew 的安装以外，就用以下两条命令即可完成，亲测可用。
sudo python3 get-pip.py
sudo pip install Scrapy
虽然还没回过神来，但确实看到了 successfull 的字样，逗比的 scrapy 之旅就此开启，系统版本 OS X EI Capitan.希望对入坑的朋友有所帮助。
jomato-MacBook-Pro:~ xxx$ sudo pip install Scrapy
sudo: pip: command not found
于是安静地重新 get 了一遍 pip
jomato-MacBook-Pro:~ xxx$ sudo python get-pip.py
The directory '/Users/xxx/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/xxx/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Requirement already up-to-date: pip in /Library/Python/2.7/site-packages
就在这个地方我忽然想起了之前安装好 pip ，直接执行 scrapy 安装命令，是调用 2.7 的版本，我如果 get python3 里面的 pip ，然后直接安装 scrapy ，系统是不是会直接调用 python3 的版本对 scrapy 进行安装呢？于是尝试了一下。
jomato-MacBook-Pro:~ xxx$ sudo python3 get-pip.py
The directory '/Users/xxx/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/xxx/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting pip
Downloading pip-8.1.2-py2.py3-none-any.whl (1.2MB)
100% |████████████████████████████████| 1.2MB 1.1MB/s
Collecting wheel
Downloading wheel-0.29.0-py2.py3-none-any.whl (66kB)
100% |████████████████████████████████| 71kB 5.4MB/s
Installing collected packages: pip, wheel
Found existing installation: pip 8.1.1
Uninstalling pip-8.1.1:
Successfully uninstalled pip-8.1.1
Successfully installed pip-8.1.2 wheel-0.29.0
jomato-MacBook-Pro:~ xxx$ sudo pip install Scrapy
The directory '/Users/xxx/Library/Caches/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
The directory '/Users/xxx/Library/Caches/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
Collecting Scrapy
Downloading Scrapy-1.1.2-py2.py3-none-any.whl (295kB)
100% |████████████████████████████████| 296kB 1.6MB/s
Collecting cssselect>=0.9 (from Scrapy)
Downloading cssselect-0.9.2-py2.py3-none-any.whl
Collecting six>=1.5.2 (from Scrapy)
Downloading six-1.10.0-py2.py3-none-any.whl
Collecting PyDispatcher>=2.0.5 (from Scrapy)
Downloading PyDispatcher-2.0.5.tar.gz
Collecting service-identity (from Scrapy)
Downloading service_identity-16.0.0-py2.py3-none-any.whl
Collecting parsel>=0.9.3 (from Scrapy)
Downloading parsel-1.0.3-py2.py3-none-any.whl
Collecting Twisted>=10.0.0 (from Scrapy)
Downloading Twisted-16.4.0.tar.bz2 (3.0MB)
100% |████████████████████████████████| 3.0MB 392kB/s
Collecting queuelib (from Scrapy)
Downloading queuelib-1.4.2-py2.py3-none-any.whl
Collecting w3lib>=1.14.2 (from Scrapy)
Downloading w3lib-1.15.0-py2.py3-none-any.whl
Collecting lxml (from Scrapy)
Downloading lxml-3.6.4.tar.gz (3.7MB)
100% |████████████████████████████████| 3.7MB 268kB/s
Collecting pyOpenSSL (from Scrapy)
Downloading pyOpenSSL-16.1.0-py2.py3-none-any.whl (43kB)
100% |████████████████████████████████| 51kB 5.6MB/s
Collecting attrs (from service-identity->Scrapy)
Downloading attrs-16.0.0-py2.py3-none-any.whl
Collecting pyasn1 (from service-identity->Scrapy)
Downloading pyasn1-0.1.9-py2.py3-none-any.whl
Collecting pyasn1-modules (from service-identity->Scrapy)
Downloading pyasn1_modules-0.0.8-py2.py3-none-any.whl
Collecting zope.interface>=4.0.2 (from Twisted>=10.0.0->Scrapy)
Downloading zope.interface-4.2.0-cp35-cp35m-macosx_10_9_x86_64.whl (130kB)
100% |████████████████████████████████| 133kB 838kB/s
Collecting cryptography>=1.3.4 (from pyOpenSSL->Scrapy)
Downloading cryptography-1.5-cp35-cp35m-macosx_10_10_x86_64.whl (1.4MB)
100% |████████████████████████████████| 1.4MB 539kB/s
Requirement already satisfied (use --upgrade to upgrade): setuptools in /Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages (from zope.interface>=4.0.2->Twisted>=10.0.0->Scrapy)
Collecting idna>=2.0 (from cryptography>=1.3.4->pyOpenSSL->Scrapy)
Downloading idna-2.1-py2.py3-none-any.whl (54kB)
100% |████████████████████████████████| 61kB 5.6MB/s
Collecting cffi>=1.4.1 (from cryptography>=1.3.4->pyOpenSSL->Scrapy)
Downloading cffi-1.7.0-cp35-cp35m-macosx_10_10_x86_64.whl (154kB)
100% |████████████████████████████████| 163kB 1.2MB/s
Collecting pycparser (from cffi>=1.4.1->cryptography>=1.3.4->pyOpenSSL->Scrapy)
Downloading pycparser-2.14.tar.gz (223kB)
100% |████████████████████████████████| 225kB 1.2MB/s
Installing collected packages: cssselect, six, PyDispatcher, attrs, pyasn1, idna, pycparser, cffi, cryptography, pyOpenSSL, pyasn1-modules, service-identity, lxml, w3lib, parsel, zope.interface, Twisted, queuelib, Scrapy
Running setup.py install for PyDispatcher ... done
Running setup.py install for pycparser ... done
Running setup.py install for lxml ... done
Running setup.py install for Twisted ... done
Successfully installed PyDispatcher-2.0.5 Scrapy-1.1.2 Twisted-16.4.0 attrs-16.0.0 cffi-1.7.0 cryptography-1.5 cssselect-0.9.2 idna-2.1 lxml-3.6.4 parsel-1.0.3 pyOpenSSL-16.1.0 pyasn1-0.1.9 pyasn1-modules-0.0.8 pycparser-2.14 queuelib-1.4.2 service-identity-16.0.0 six-1.10.0 w3lib-1.15.0 zope.interface-4.2.0
除去前面 python3 的安装和 Homebrew 的安装以外，就用以下两条命令即可完成，亲测可用。
sudo python3 get-pip.py
sudo pip install Scrapy
虽然还没回过神来，但确实看到了 successfull 的字样，逗比的 scrapy 之旅就此开启，系统版本 OS X EI Capitan.希望对入坑的朋友有所帮助。
17 条回复 • 2018-05-03 17:02:25 +08:00
 |
1
TimePPT 2016-08-28 22:04:54 +08:00 via iPhone  2
Mac 下玩 python 的正确姿势难道不是 pyenv + virtualenv + pip 么？
|
 |
4
Mirage09 2016-08-28 22:25:30 +08:00 via iPhone
看来我当时死也装不上 scrapy 的原因就是没用 Python3 ……
|
 |
5
187j3x1 2016-08-28 22:36:39 +08:00
这暴力 sudo ，果然入坑，小心后遗症。
|
 |
7
mind3x 2016-08-29 09:16:37 +08:00 via Android
用 Docker 啊
https://hub.docker.com/r/rickl/docker-scrapy/ docker pull rickl/docker-scrapy 只要 34MB 。无论 OS X, win, Linux 一行搞定。 |
|
8
TimePPT 2016-08-29 10:03:56 +08:00
@Verydiao 非大神，只是平时爱折腾点小脚本啥的 233 。
话说回来，这坑我也趟过😂，最简单粗暴的办法是把重要资料备份了抹盘重装，因为可能连你自己都不记得中间到底操作过啥。 系统自带的程序环境有很多是给系统的依赖，所以自己的编程环境最好是和系统环境做隔离，最好办法就是用虚拟环境工具模拟一个独立的操作环境出来。 至于怎么搭建，其实楼里已经给了好几个关键词了，或者搜「 python 编程环境搭建」应该有不少文章。 小白的话善用 Google ，八成的问题都能解决。 另外，没事瞎 sudo 是个坏习惯，别问我怎么知道的，说多了都是泪 |
 |
9
dotpig 2016-08-29 10:05:13 +08:00
系统自带 python 2.7 和 homebrew 安装 python 3.5 一点不矛盾。特意去试了一下 pip3 install scrapy, 一个 error 都找不到。你这样到处 sudo 还是蛮厉害的， homebrew 不就是为了不要处处 sudo 嘛。
|
|
10
TimePPT 2016-08-29 10:07:38 +08:00
以及，如果确实小白随便玩玩编程不当饭吃，用 virtualbox 啊 PD 啊装个 ubuntu 随便造吧，造之前只用存个快照，玩坏了回滚起来也方便。
|
 |
11
brucedone 2016-08-29 10:12:49 +08:00
why not anaconda ?
|
 |
12
xsstomy 2016-08-29 11:49:33 +08:00
跟楼主差不多，当时装了好久才装上去，然后就玩了一下，然后就没有然后了。
|
 |
13
quxw 2016-08-29 17:03:11 +08:00
很麻烦吗？！点在哪？
|
 |
15
jyf007 2016-08-29 20:02:40 +08:00 via Android
gentoo 路过，可以共存，十分可怕。
|
Select Language