我怎么才能安装上Python3.6扭曲+ Scrapy和CentOS

Question

我用在CentOS 7最新的Python和专用的virtualenv

(ENV) [luoc@study ~ ]$ lsb_release -a 
LSB Version: :core-4.1-amd64:core-4.1-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-4.1-amd64:desktop-4.1-noarch:languages-4.1-amd64:languages-4.1-noarch:printing-4.1-amd64:printing-4.1-noarch 
Distributor ID: CentOS 
Description: CentOS Linux release 7.3.1611 (Core) 
Release: 7.3.1611 
Codename: Core 

(ENV) [luoc@study ~ ]$ python --version 
Python 3.6.0 

当我安装scrapy，错误

(ENV) [luoc@study ~ ]$ pip install scrapy 
Collecting scrapy 
    Using cached Scrapy-1.3.2-py2.py3-none-any.whl 
Collecting cssselect>=0.9 (from scrapy) 
    Using cached cssselect-1.0.1-py2.py3-none-any.whl 
Requirement already satisfied: six>=1.5.2 in ./ENV/lib/python3.6/site-packages (from scrapy) 
Collecting Twisted>=13.1.0 (from scrapy) 
    Could not find a version that satisfies the requirement Twisted>=13.1.0 (from scrapy) (from versions:) 
No matching distribution found for Twisted>=13.1.0 (from scrapy) 

当我安装扭曲的独立性时，错误

(ENV) [luoc@study ~ ]$ pip install Twisted 
Collecting Twisted 
    Could not find a version that satisfies the requirement Twisted (from versions:) 
No matching distribution found for Twisted 

(ENV) [luoc@study ~ ]$ pip install --verbose Twisted 
Collecting Twisted 
    1 location(s) to search for versions of Twisted: 
    * https://pypi.python.org/simple/twisted/ 
    Getting page https://pypi.python.org/simple/twisted/ 
    Looking up "https://pypi.python.org/simple/twisted/" in the cache 
    Current age based on date: 40208 
    Freshness lifetime from max-age: 600 
    Freshness lifetime from request max-age: 600 
    The cached response is "stale" with no etag, purging 
    Starting new HTTPS connection (1): pypi.python.org 
    "GET /simple/twisted/ HTTP/1.1" 200 10196 
    Updating cache with response from "https://pypi.python.org/simple/twisted/" 
    Caching b/c date exists and max-age > 0 
    Analyzing links from page https://pypi.python.org/simple/twisted/ 
Skipping link ... 
Could not find a version that satisfies the requirement Twisted (from versions:) 
Cleaning up... 
No matching distribution found for Twisted 
Exception information: 
Traceback (most recent call last): 
    File "/home/luoc/ENV/lib/python3.6/site-packages/pip/basecommand.py", line 215, in main 
    status = self.run(options, args) 
    File "/home/luoc/ENV/lib/python3.6/site-packages/pip/commands/install.py", line 335, in run 
    wb.build(autobuilding=True) 
    File "/home/luoc/ENV/lib/python3.6/site-packages/pip/wheel.py", line 749, in build 
    self.requirement_set.prepare_files(self.finder) 
    File "/home/luoc/ENV/lib/python3.6/site-packages/pip/req/req_set.py", line 380, in prepare_files 
    ignore_dependencies=self.ignore_dependencies)) 
    File "/home/luoc/ENV/lib/python3.6/site-packages/pip/req/req_set.py", line 554, in _prepare_file 
    require_hashes 
    File "/home/luoc/ENV/lib/python3.6/site-packages/pip/req/req_install.py", line 278, in populate_link 
    self.link = finder.find_requirement(self, upgrade) 
    File "/home/luoc/ENV/lib/python3.6/site-packages/pip/index.py", line 514, in find_requirement 
    'No matching distribution found for %s' % req 
pip.exceptions.DistributionNotFound: No matching distribution found for Twisted 

那么为什么不能在Python3.6上安装Twisted？做错了事我的环境？

Kmike suggested me to ask twisted's developer

Answer 1

你自己编译的Python 3.6？

看来你的python版本是在没有bzip2支持的情况下编译的。这是同一问题的过去票证：https://twistedmatrix.com/trac/ticket/8177

我建议使用Miniconda有一个Python 3.6环境，并按照this instructions来安装Scrapy。

Answer 2

我知道问题已经解决，但我想帮助未来的用户。
我在Debian STRECH，只是安装了Python 3.6，
如果你想安装scrapy编译的Python 3.6自己，尝试运行

sudo apt-get install bzip2 libbz2-dev 

之后，只需重新编译的Python 3.6，它应该工作